Relevant bibliographies by topics / Manganese oxide

Academic literature on the topic 'Manganese oxide'

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Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "Manganese oxide"

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Liu, Haiyan, Olivier Pourret, Huaming Guo, Raul E. Martinez, and Lahcen Zouhri. "Impact of Hydrous Manganese and Ferric Oxides on the Behavior of Aqueous Rare Earth Elements (REE): Evidence from a Modeling Approach and Implication for the Sink of REE." International Journal of Environmental Research and Public Health 15, no. 12 (December 12, 2018): 2837. http://dx.doi.org/10.3390/ijerph15122837.

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In this study, models were used for the first time to investigate the fate and transport of rare earth elements (REE) in the presence of hydrous manganese and ferric oxides in groundwaters from the coastal Bohai Bay (China). Results showed that REE sorption is strongly dependent on pH, as well as hydrous manganese and ferric oxide content. Higher proportions of REE were sorbed by hydrous manganese oxide as compared to hydrous ferric oxides, for example in the presence of neodymium. In this case, a mean 28% of this element was sorbed by hydrous manganese oxide, whereas an average 7% sorption was observed with hydrous ferric oxides. A contrasting REE sorption behavior was observed with hydrous manganese and ferric oxide for all investigated groundwaters. Specifically, REE bound to hydrous manganese oxides showed decreasing sorption patterns with increasing atomic number. The opposite trend was observed in the presence of hydrous ferric oxides. In addition, these results suggested that light REE (from La to Sm) rather than heavy REE (from Eu to Lu) are preferentially scavenged by hydrous manganese oxide. However, the heavy REE showed a greater affinity for hydrous ferric oxides compared to light REE. Therefore, both hydrous manganese and ferric oxide are important scavengers of REE. This study shows the implication of hydrous manganese and ferric oxide sorption for the sink of REE in groundwater.
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Awaluddin, Amir, Riska Anggraini, Siti Saidah Siregar, Muhdarina, and Prasetya. "A one-pot synthesis of Fe-doped cryptomelane type octahedral molecular sieve manganese oxide for degradation of methylene blue dye." MATEC Web of Conferences 276 (2019): 06005. http://dx.doi.org/10.1051/matecconf/201927606005.

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The Fe-doped octahedral molecular sieve manganese oxides have been successfully synthesized by one-pot synthesis of the reaction between KMnO4 and glucose using sol-gel methods. The oxide products are then characterized by various techniques such as X-ray diffraction, scanning electron microscopy, atomic absorption spectroscopy and average oxidation state (AOS) of manganese in manganese oxides. The as-synthesized manganese oxide and Fe-doped manganese oxides are used as catalysts for the degradation of methylene blue dye using hydrogen peroxide as oxidants. The results indicated that the Fe-doped manganese oxide catalyst displayed much enhanced catalytic activities compared to undoped manganese oxide for methylene blue degradation. The differences in catalytic activities have been correlated with the difference in surface properties and crystallinity.
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Ye, Zhi Guo, Xian Liang Zhou, Hui Min Meng, Xiao Zhen Hua, Ying Hu Dong, and Ai Hua Zou. "The Electrochemical Characterization of Electrochemically Synthesized MnO2-Based Mixed Oxides for Supercapacitor Applications." Advanced Materials Research 287-290 (July 2011): 1290–98. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.1290.

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Nanostructured elements, including: manganese-molybdenum (Mn-Mo) oxide, manganese-molybdenum-tungsten (Mn-Mo-W) oxide, manganese-molybdenum-iron (Mn-Mo-Fe) oxide, manganese-molybdenum-cobalt (Mn-Mo-Co) oxide, manganese-vanadium-tungsten (Mn-V-W) oxide, manganese-vanadium-iron (Mn-V-Fe) oxide and manganese-iron (Mn-Fe) oxide, have been anodically deposited onto titanium substrates by employing an iridium dioxide interlayer (Ti/IrO2anode). The electrochemical characteristics of the resultant oxide deposits have been investigated by cyclic voltammetry (CV) in an aqueous 0.1 M Na2SO4solution. The voltammetric behaviors of the oxide deposits observed are significantly influenced by the doped elements. Molybdenum doping is found to be advantageous at improving the capacitance characteristics of anodically deposited manganese oxide. Comparatively, iron and vanadium doping are found to be unfavorable. The structure and crystallinity of these deposits have been identified by X-ray diffraction (XRD). The surface morphologies of these oxides were acquired from field emission scanning electron microscopes (FESEM). The high values of electrical parameters for the doped deposits are attributed to the net-like and sponge-like nanostructure, and low crystallinity of the doped manganese oxides. The deposit of Mn-Mo oxides exhibits an excellent capacitive-like behavior, possessing the maximum specific capacitance of 810 F g-1at a CV scan rate of 5 mV s-1in aqueous 0.1 M Na2SO4solution.
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Park, Yaewon, Shuang Liu, Terrence Gardner, Drake Johnson, Aaron Keeler, Nathalia Ortiz, Ghada Rabah, and Ericka Ford. "Biohybrid nanofibers containing manganese oxide–forming fungi for heavy metal removal from water." Journal of Engineered Fibers and Fabrics 15 (January 2020): 155892501989895. http://dx.doi.org/10.1177/1558925019898954.

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Manganese-oxidizing fungi support bioremediation through the conversion of manganese ions into manganese oxide deposits that in turn adsorb manganese and other heavy metal ions from the environment. Manganese-oxidizing fungi were immobilized onto nanofiber surfaces to assist remediation of heavy metal–contaminated water. Two fungal isolates, Coniothyrium sp. and Coprinellus sp., from a Superfund site (Lot 86, Farm Unit #1) water treatment system were incubated in the presence of nanofibers. Fungal hyphae had strong association with nanofiber surfaces. Upon fungal attachment to manganese chloride–seeded nanofibers, Coniothyrium sp. catalyzed the conformal deposition of manganese oxide along hyphae and nanofibers, but Coprinellus sp. catalyzed manganese oxide only along its hyphae. Fungi–nanofiber hybrids removed various heavy metals from the water. Heavy metal ions were adsorbed into manganese oxide crystalline structure, possibly by ion exchange with manganese within the manganese oxide. Hybrid materials of fungal hyphae and manganese oxides confined to nanofiber-adsorbed heavy metal ions from water.
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Liang, Mengyu, Huaming Guo, and Wei Xiu. "Mechanisms of arsenite oxidation and arsenate adsorption by a poorly crystalline manganese oxide in the presence of low molecular weight organic acids." E3S Web of Conferences 98 (2019): 04009. http://dx.doi.org/10.1051/e3sconf/20199804009.

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Manganese oxides are considered as one of the effective oxides capable of oxidizing arsenite and reduce the toxicity of arsenic. Since low molecular weight organic acids (LMWOAs) commonly found in nature can act as reducing and chelating agents for manganese oxides, it is particularly important to investigate how these organic acids with different numbers of carboxyl groups like citrate and EDTA affect oxidation and adsorption of arsenic by manganese oxides. In this study, low As(V) adsorption on manganese oxide is slightly enhanced by citrate and EDTA, which results from the increase in active sites via reduction of manganese oxide by LMWOAs. However, citrate and EDTA have different effects on the oxidation of As(III). MnIII/II citrate autocatalytic cycle as a manganese-based redox system decreases As(III) oxidation rate, but EDTA does not yield autocatalysis, which slightly increases the oxidation rate of As(III). Reduction of manganese oxide by EDTA and chelation between Mn(II) and EDTA lead to exposure of more active sites. Our research highlights the different effects of low molecular weight organic acids on the reactions between arsenic and manganese oxide.
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Nadtochii, A. A., D. O. Stepanenko, N. E. Khodotova, and V. S. Kyrychok. "THERMODYNAMIC MODELING OF BEHAVIOR OF COMPONENTS IN SLAG SYSTEMS CHARACTERISTIC IN THE MANUFACTURE OF MANGANESE FERROAL ALLOYS." Fundamental and applied problems of ferrous metallurgy, no. 35 (2021): 263–74. http://dx.doi.org/10.52150/2522-9117-2021-35-263-274.

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The aim of the study is to find highly efficient schemes for the use of secondary raw materials and waste-free technologies that will return valuable chemical elements to the metallurgical redistribution, primarily manganese. This problem cannot be solved without a theoretical substantiation of physicochemical conditions, the creation of which will allow to achieve a fuller use of the potential of the useful properties of the studied materials. Analysis of the main physicochemical properties of manganese-containing materials, in particular ferroalloy slags, will allow to obtain the initial data and intervals of values of parameters necessary for further research on the development of an effective technology for processing manganese slags. Thermodynamic equilibrium calculations in the system Mn-Si-Ca-Al-Mg-O show that the increase in the amount of free manganese oxide is associated with a certain value of basicity, the achievement of which provides the predominant binding of silica to calcium silicates. The increased content of MgO oxide increases the amount of free oxides of silicon and manganese. The ratio of oxides in the system affects the viscosity and crystallization characteristics of this system. The degree of reduction of oxides is determined by the activities of the components of the slag phase, which depends on its chemical composition and temperature. Calculation of activities in the system based on manganese oxide showed that increasing the basicity, and magnesium oxide content in the system increases the activity of manganese oxide and the addition of aluminіum oxide - decreases, which coincides with the data obtained by calculating the equilibrium phase distribution. The analysis of the data obtained in the calculation of the activities of components in a complex slag system based on manganese oxide justifies the feasibility of reprocessing metallurgical manganese slag, which will return manganese to the metallurgical redistribution.
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Zhang, Lichun, Liping Kang, Hao Lv, Zhikui Su, Kenta Ooi, and Zong-Huai Liu. "Controllable synthesis, characterization, and electrochemical properties of manganese oxide nanoarchitectures." Journal of Materials Research 23, no. 3 (March 2008): 780–89. http://dx.doi.org/10.1557/jmr.2008.0091.

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Flowerlike manganese oxide microspheres and cryptomelane-type manganese oxide nanobelts were selectively synthesized by a simple decomposition of KMnO4 under mild hydrothermal conditions without using template or cross-linking reagents. The effect of varying the hydrothermal times and temperatures on the nanostructure, morphology, compositional, and electrochemical properties of the obtained manganese oxides was investigated. X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) studies showed that the flowerlike manganese oxide microspheres could be obtained at relatively low hydrothermal temperatures, while high hydrothermal temperatures were favorable for the formation of cryptomelane-type manganese oxide nanobelts. A morphology and crystalline evolution of the nanostructures was observed as the hydrothermal temperature was increased from 180 to 240 °C. On the basis of changing the temperatures and hydrothermal reaction times, the formation mechanism of cryptomelane-type manganese oxide nanobelts is discussed. Cyclic voltammetry (CV) was used to evaluate the electrochemical properties of the obtained manganese oxide nanostructures, and the results show that the electrochemical properties depend on their shape and crystalline structure. This easily controllable, template-free, and environmentally friendly method has the potential for being used in syntheses of manganese oxide nanomaterials with uniform morphologies and crystal structures.
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Wright, Mitchell H., Saad M. Farooqui, Alan R. White, and Anthony C. Greene. "Production of Manganese Oxide Nanoparticles by Shewanella Species." Applied and Environmental Microbiology 82, no. 17 (June 24, 2016): 5402–9. http://dx.doi.org/10.1128/aem.00663-16.

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ABSTRACTSeveral species of the bacterial genusShewanellaare well-known dissimilatory reducers of manganese under anaerobic conditions. In fact,Shewanella oneidensisis one of the most well studied of all metal-reducing bacteria. In the current study, a number ofShewanellastrains were tested for manganese-oxidizing capacity under aerobic conditions. All were able to oxidize Mn(II) and to produce solid dark brown manganese oxides.Shewanellaloihicastrain PV-4 was the strongest oxidizer, producing oxides at a rate of 20.3 mg/liter/day and oxidizing Mn(II) concentrations of up to 9 mM. In contrast,S. oneidensisMR-1 was the weakest oxidizer tested, producing oxides at 4.4 mg/liter/day and oxidizing up to 4 mM Mn(II). Analysis of products from the strongest oxidizers, i.e.,S.loihicaPV-4 andShewanella putrefaciensCN-32, revealed finely grained, nanosize, poorly crystalline oxide particles with identical Mn oxidation states of 3.86. The biogenic manganese oxide products could be subsequently reduced within 2 days by all of theShewanellastrains when culture conditions were made anoxic and an appropriate nutrient (lactate) was added. WhileShewanellaspecies were detected previously as part of manganese-oxidizing consortia in natural environments, the current study has clearly shown manganese-reducingShewanellaspecies bacteria that are able to oxidize manganese in aerobic cultures.IMPORTANCEMembers of the genusShewanellaare well known as dissimilatory manganese-reducing bacteria. This study shows that a number of species fromShewanellaare also capable of manganese oxidation under aerobic conditions. Characterization of the products of the two most efficient oxidizers,S. loihicaandS. putrefaciens, revealed finely grained, nanosize oxide particles. With a change in culture conditions, the manganese oxide products could be subsequently reduced by the same bacteria. The ability ofShewanellaspecies both to oxidize and to reduce manganese indicates that the genus plays a significant role in the geochemical cycling of manganese. Due to the high affinity of manganese oxides for binding other metals, these bacteria may also contribute to the immobilization and release of other metals in the environment.
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Niu, Sida, Liqun Zhao, Xiaoju Lin, Tong Chen, Yingchao Wang, Lingchao Mo, Xianglong Niu, et al. "Mineralogical Characterization of Manganese Oxide Minerals of the Devonian Xialei Manganese Deposit." Minerals 11, no. 11 (November 9, 2021): 1243. http://dx.doi.org/10.3390/min11111243.

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The Guangxi Zhuang Autonomous Region is an important manganese ore district in Southwest China, with manganese ore resource reserves accounting for 23% of the total manganese ore resource reserves in China. The Xialei manganese deposit (Daxin County, Guangxi) is the first super-large manganese deposit discovered in China. The Mn oxide in the supergene oxidation zone of the Xialei deposit was characterized using scanning electron microscopy (SEM), energy spectrometer (EDS), transmission electron microscopy (TEM, HRTEM), and X-ray diffraction analysis (XRD). The Mn oxides have a gray-black/steel-gray color, a semi-metallic-earthy luster, and appear as oolitic, pisolitic, banded, massive, and cellular textures. Scanning electron microscopy images show that the manganese oxide minerals are present as fine-spherical particles with an earthy surface. TEM and HRTEM indicate the presence of oriented bundled and staggered nanorods, and nanopores between the crystals. The Mn oxide ore can be classified into two textural types: (1) oolitic and pisolitic (often with annuli) Mn oxide, and (2) massive Mn oxide. Pyrolusite, cryptomelane, and hollandite are the main Mn oxide minerals. The potassium contents of cryptomelane and pyrolusite are discussed. The unit cell parameters of pyrolusite are refined.
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Fatma F Ali, Ahmed S Buhedma, Zohar Ashoor, Tarq A Nouh, and Rasha R Atiya. "Response of seedling barley (Hurdeom vulgar, L.) to foliar fertilization of nano-oxides (Fe, Cu, Mg)." Journal of Advanced Zoology 44, S6 (November 26, 2023): 391–95. http://dx.doi.org/10.17762/jaz.v44is6.2161.

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Background. An experiment was conducted at the Grain Technology Laboratory, Crop Department, Faculty of Agriculture, Omar Al-Mukhtar University, during the 2023 season. The experiment utilized a completely randomized design to study the response of barley to foliar application of fine nanoscale iron, manganese, and copper fertilizers. The application was carried out as foliar spray at two different doses, two weeks and one month after sowing, using 3 kg capacity pots with 20 seeds per pot. The experiment included three observations for each treatment, with the nanoscale iron, manganese, and copper oxides applied at a concentration of 1 cmol/L. The data revealed the following: Significant positive response of barley shoots to foliar application of nanoscale iron, manganese, and copper fertilizers in various growth indicators, including shoot weight, shoot length, leaf area, crop growth rate, and specific leaf weight. High significant differences were observed in the effect of nanoscale iron, manganese, and copper oxides on the average shoot weight, crop growth rate, and leaf area. Copper oxide and manganese oxide showed the highest means, followed by iron oxide, compared to the control. Iron oxide exhibited the highest specific leaf weight for barley shoots, followed by copper oxide and then manganese oxide, compared to the control treatment.
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Dissertations / Theses on the topic "Manganese oxide"

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Annie, Lundberg. "Environmental transformations of Manganese and Manganese oxide nanoparticles." Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289637.

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Engineered nanoparticles (NPs) are produced in increased quantities. Due to this increase, itis vital to understand the full lifecycle and fate of these NPs to prevent any possible environmental stress. As a result of their size, NPs may interact differently with their environment compared to bulk materials with the same composition, this both gives NPs their usage as well as risks. The risks often include unwanted interaction with biological systems which may lead to generation of toxicity. This study focused on environmental transformations of manganese and manganese oxide (Mn3O4) NPs. Applications these nanoparticles are often in battery technology and catalysis. A solution intended to mimic  the composition of freshwater was used as the environmental media to study these transformations. Exposure of NPs was performed both with and without added natural organic matter (NOM). Several experiments were preformed such as Atomic absorption spectroscopy (AAS) for dissolution of the NPs, Nanoparticle Tracking Analysis (NTA) for particle size, and Attenuated total reflection Fourier transform infrared spectroscopy (ATR- FTIR) for adsorption studies. The production of reactive oxygen species (ROS) was also investigated, and simulations of metal speciation using Visual MINTEQ were also performed. The results from NTA and AAS (for Mn3O4) were not very reliable due to inconsistencies in the results which were probably caused by problems with preparation. However, for both, the results point towards that the dissolution rates of the particles are slightly slowed down when NOM is added. From ATR-FTIR and the simulations it was confirmed that NOM, carbonate, and sulfur will adsorb onto both particles, possibly in multiple layers. As for increased ROS development, no evidence of such an increase was found. However, the method used does not test for increased hydrogen peroxide development so this would in interesting test as well. Other studies which also would contribute to a more nuanced picture of this system is studies regarding zeta potential and studies which furtherinvestigates the type of adsorption mechanism which occurs at the particles surface.
Industriella nanopartiklar används i allt större utsträckning. Därför är det av stor vikt attundersöka hela livscykeln som dessa produkter går igenom for att säkerhetsställa att de inte utgör någon fara för miljön och ekosystemen som de kan komma att hamna i. Som ett resultat av deras storlek interagerar nanopartiklar annorlunda med sin omgivning om man jämför med bulkmaterial av samma sammansättning, detta nanopartiklar både sina unika fördelar och risker. Riskerna innefattar ofta oönskade interaktioner med biologiska  kretslopp som kan resultera i toxicitet. I den här rapporten läggs fokus på just denna typ av kemiska omvandlingar som nanopartiklar av mangan och manganoxid kan tänkas genomgå i det naturliga kretsloppet. Applikationer man ofta ser dessa partiklar i är batteriteknologi och katalys. De medium som används för att studera omvandlingarna är en lösning som efterliknar ytvatten från en klar sjö. Exponeringar gjordes både med denna lösning så som den är och med tillsatt naturligt organiskt material, NOM.En rad olika experiment gjordes så som analyser med AAS för att undersöka partiklarnas upplösning, NTA för partikelstorlekar och ATR-FTIR som undersökte adsorption på partiklarna. Även en studie med en DCFH metod där ökat ROS aktivitet undersöktes och en rad med SHM simuleringar gjorda i Visual MINTEQ utfördes. Resultaten från NTA och AAS analysen visade sig inte vara särskilt tillförlitliga på grund av tvetydliga resultat som troligen orsakats av problem med provpreparationen. Men resultaten från båda dessa pekar mot att upplösningshastigheten blir något hämmad då man tillsätter naturligt organiskt material, för båda partiklarna. Från ART-FTIR och simuleringarna kunde de säkerhetsställas att adsorption av NOM, karbonat och svavel sker på båda partiklarna, möjligen i fler än ett lager. När det kommer till ROS studien kunde inga bevis på ökad ROS aktivitet hittas med den använda metoden. Dock så kunde inte ökat väteperoxid aktivitet mätas med den metod som användes så detta hade varit av intresse att testa i framtiden. Andra studier som också skulle vara hjälpsamma för att ge en mer nyanserad bild av detta system är en studie om partiklarnas zeta potential och merundersökningar om vilken typ av adsorptions mekanism som sker vid partiklarnas yta.
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Chandrakumar, Thambirajah. "The high resolution spectroscopy of manganese oxide." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27405.

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This thesis reports studies of the electronic spectrum of gaseous MnO. The (0,0) band of the A⁶Σ +-X⁶ Σ+ electronic transition of MnO was recorded by intermodulated laser-induced fluorescence over the range 17770 - 17970 cm⁻¹. The hyperfine structure caused by the ⁵⁵Mn nucleus (I = 5/2) is almost completely resolved. Internal hyperfine perturbations between the F₃ and F₄electron spin components (where N = J - 1/2 and N = J + 1/2, respectively) occur in the ground state of MnO. These are caused by hyperfine matrix elements of the type ΔN = ΔF = 0.ΔJ = ± 1. Extra lines obeying the selection rules ΔJ = 0, ± 2 are also induced. Therefore, [sup P]Q₃₄, [sup R]Q₄₃, [sup P]Q₄₃ and [sup R]S₃₄ branches appear in the spectrum although they are not allowed in parallel transitions. The reason for the great complexity of the spectra is the occurrence of a large avoided crossing near N = 26 in the A⁶Σ + v = 0 level by another electronic state, B⁶Σ +, with the same multiplicity and symmetry. The perturbation between the A⁶Σ + and B⁶Σ + states arises from electrostatic interaction. The selection rules for electrostatic perturbations are ΔJ = ΔS = Δ∧ = ΔΩ = 0. The perturbing state B⁶Σ + state has a considerably longer bond length so that it must come from a "charge transfer transition", possibly by electron transfer either from the 3π to the 4π orbital or from 8σ to 10σ. However, the A⁶Σ + state has only a small bond length change compared to the ground state so that it comes from a "Valence state transition". The Fermi contact constant b was found to be negative for the A⁶Σ + state and this confirms the electronic configuration as being (8σ² 3 π⁴) 1δ² 4 π ² 10σ¹. The ground state is free of perturbations, except for the internal hyperfine perturbations, and is in nearly pure case (b) coupling. Various satellite branches which were observed in the B-X transition confirm the case (a) nature of the B⁶Σ + state at low N. The spacing between the main branches and the satellite branches gives values for the spin-spin parameter λ and the spin-rotation parameter γ of the ground state.
Science, Faculty of
Chemistry, Department of
Graduate
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Eames, Douglas J. "Direct causticizing of sodium carbonate with manganese oxide." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/7026.

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Chan, Yiu-ming. "The chemistry and in vitro cytotoxicity study of manganese oxide nanostructures." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39557121.

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Taujale, Saru. "INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/347169.

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Civil Engineering
Ph.D.
Mn oxides have high redox potentials and are known to be very reactive, rendering many contaminants susceptible to degradation via oxidation. Although Mn oxides typically occur as mixtures with other metal oxides (e.g., Fe, Al, and Si oxides) and natural organic matter (NOM) in soils and aquatic environments, most studies to date have studied the reactivity of Mn oxides as a single oxide system. This study, for the first time, examined the effect of representative metal oxides (Al2O3, SiO2, TiO2, and Fe oxides) and NOM or NOM-model compounds (Aldrich humic acid (AHA), Leonardite humic acid (LHA), pyromellitic acid (PA) and alginate) on the oxidative reactivity of MnO2, as quantified by the oxidation kinetics of triclosan (a widely used phenolic antibacterial agent) as a probe compound. The study also examined the effect of soluble metal ions released from the oxide surfaces on MnO2 reactivity. In binary oxide mixtures, Al2O3 decreased the reactivity of MnO2 as a result of both heteroaggregation and complexation of soluble Al ions with MnO2. At pH 5, the surface charge of MnO2 is negative while that of Al2O3 is positive resulting in intensive heteroaggregation between the two oxides. Up to 3.15 mM of soluble Al ions were detected in the supernatant of 10 g/L of Al2O3 at pH 5.0 whereas the soluble Al concentration was 0.76 mM in the mixed Al2O3 + MnO2 system at the same pH. The lower amount of soluble Al in the latter system is the result of Al ion adsorption by MnO2. The experiments with the addition of 0.001 to 0.1 mM Al3+ to MnO2 suspension indicated the triclosan oxidation rate constant decreased from 0.24 to 0.03 h-1 due to surface complexation. Fe oxides which are also negatively charged at pH 5 inhibited the reactivity of MnO2 through heteroaggregation. The concentration of soluble Fe(III) ions ( 4 mg-TOC/L or [alginate/PA] > 10 mg/L, a lower extent of heteroaggregation was also observed due to the negatively charged surfaces for all oxides. Similar effects on aggregation and MnO2 reactivity as discussed above were observed for ternary MnO2‒Al2O3‒NOM systems. HAs, particularly at high concentrations (2.0 to 12.5 mg-C/L), alleviated the effect of soluble Al ions on MnO2 reactivity as a result of the formation of soluble Al-HA complexes. Alginate and PA, however, did not form soluble complexes with Al ions so they did not affect the effect of Al ions on MnO2 reactivity. Despite the above observations, the amount of Al ions dissolved in MnO2+Al2O3+NOM mixtures was too low, as a result of NOMs adsorption on the surface to passivate oxide dissolution, to have a major impact on MnO2 reactivity. In conclusion, this study provided, for the first time, a systematical understanding of the redox activity of MnO2 in complex model systems. With this new knowledge, the gap between single oxide systems and complex environmental systems is much narrower so that it is possible to have a more accurate prediction of the fate of contaminants in the environment.
Temple University--Theses
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Williams, Anthony James. "Synthesis and neutron diffraction studies of manganese oxide perovskites." Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615786.

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Rodríguez-Martínez, Lide Mercedes. "The effects of cation disorder in manganese oxide perovskites." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624354.

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Reed, Corey William. "VOC Catalytic Oxidation on Manganese Oxide Catalysts Using Ozone." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/28000.

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This dissertation describes the current and common problem of removing low concentrations of pollutants known as volatile organic compounds (VOCs) from large volume gas emissions. Silica-supported manganese oxide catalysts with loadings of 3, 10, 15, and 20 wt. % (as MnO2) were characterized using x-ray absorption spectroscopy and x-ray diffraction (XRD). The edge positions in the x-ray absorption spectra indicated that the oxidation state for the manganese decreased with increasing metal oxide loading from a value close to that of Mn2O3 (+3) to a value approximating that of Mn3O4 (+2⅔). The XRD was consistent with these results as the diffractograms for the supported catalysts of higher manganese oxide loading matched those of a Mn3O4 reference. The reactivity of the silica-supported manganese oxide catalysts in acetone oxidation using ozone as an oxidant was studied over the temperature range of 300 to 600 K. Both oxygen and ozone produced mainly CO2 as the product of oxidation, but in the case of ozone the reaction temperature and activation energy were significantly reduced. The effect of metal oxide loading was investigated, and the activity for acetone oxidation was greater for a 10 wt. % MnOx/SiO2 catalyst sample compared to a 3 wt. % MnOx/SiO2 sample. A detailed mechanistic study of acetone oxidation using ozone was performed on a 10 wt. % silica-supported manganese oxide catalyst utilizing Raman spectroscopy, temperature programmed desorption (TPD), and kinetic measurements. In situ Raman spectroscopy at reaction conditions identified a band at 2930 cm-1 due to an adsorbed acetone species on the silica support and a band at 890 cm-1 due to an adsorbed peroxide species on the manganese oxide. A steady-state kinetic analysis, which varied acetone partial pressure (101 â 405 Pa), ozone partial pressure (101 â 1013 Pa), and temperature (318, 333, 343, and 373 K), was used to determine reaction rate expressions, while a transient kinetic study (318 K) was used to determine the role of the adsorbed species in the reaction mechanism. It was found that the rates of the acetone and ozone reactions were equally well described by both a power rate law and a Langmuir-Hinshelwood expression. The transient experiments showed that the rates of formation and reaction of the observed peroxide surface species did not correspond to the overall reaction rate, and it was concluded that it was not directly involved in the rate determining step of the reaction. A mechanism is proposed involving the reaction of an adsorbed acetone intermediate with an atomically adsorbed oxygen species via a dual site surface reaction to form complete oxidation products.
Ph. D.
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Xi, Yan. "Ozone Decomposition and Acetone Oxidation on Manganese Oxide Catalysts." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/33112.

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This thesis describes the preparation and characterization of manganese oxide catalysts and their application in the oxidation of acetone, a typical volatile organic compound (VOC), and ozone decomposition. This topic is of great value because of environmental concerns of the elimination of the harmful VOCs and ozone. Manganese oxide was chosen because it is a well-known complete oxidation catalyst for VOCs and also an active catalyst for ozone decomposition. Two cases of studies were carried out in this work. The first study involved the oxidation of acetone using ozone on silica- and alumina-supported manganese oxide catalysts deposited on aluminum oxide foam substrates. The characteristics of the catalysts were determined through various techniques, including x-ray diffraction (XRD), x-ray absorption spectroscopy (XAS), Brunauer-Emmett-Teller (BET) surface area analysis, temperature-programmed reduction (TPR), and oxygen chemisorption. The use of these techniques allowed better understanding of the nature of the catalysts. Activity tests were carried out in the acetone oxidation reaction and it was found that the usage of ozone substantially reduced the oxidation temperature. Steady-state in situ Raman spectroscopy was also carried out to better understand the mechanism of the acetone oxidation reaction using ozone. The second study involved an investigation of structural and electronic properties of manganese centers of the MnOx/SiO2 and MnOx/Al2O3 catalysts during the ozone decomposition reaction using in situ x-ray absorption spectroscopy (XAS). The number of surface active sites was again determined through TPR and oxygen chemisorption measurements. The performance of the catalysts with different loadings and supports were also compared.
Master of Science
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Shumlas, Samantha Lyn. "Characterization of Carbon Nanomaterial Formation and Manganese Oxide Reactivity." Diss., Temple University Libraries, 2016. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/419544.

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Chemistry
Ph.D.
Characterization of a material’s surface, structural and physical properties is essential to understand its chemical reactivity. Control over these properties helps tailor a material to a particular application of interest. The research presented in this dissertation focuses on characterizing a synthetic method for carbon nanomaterials and the determination of structural properties of manganese oxides that contribute to its reactivity for environmental chemistry. In particular, one research effort was focused on the tuning of synthetic parameters towards the formation of carbon nanomaterials from gaseous methane and gaseous mixtures containing various mixtures of methane, argon and hydrogen. In a second research effort, photochemical and water oxidation chemistry were performed on the manganese oxide, birnessite, to aid in the remediation of arsenic from the environment and provide more options for alternative energy catalysts, respectively. With regard to the synthesis of novel carbonaceous materials, the irradiation of gaseous methane with ultrashort pulse laser irradiation showed the production of carbon nanospheres. Products were characterized with transmission electron microscopy (TEM), scanning electron microscopy (SEM), ultraviolet (UV) Raman spectroscopy, and infrared spectroscopy. Increasing the pressure of methane from 6.7 to 133.3 kPa showed an increase in the median diameter of the spheres from ~500 nm to 85 nm. Particles with non-spherical morphologies were observed by TEM at pressures of 101.3 kPa and higher. UV Raman spectroscopy revealed that the nanospheres were composed of sp2 and sp3 hybridized carbon atoms, based on the presence of the carbon D and T peaks. A 30% hydrogen content was determined from the red shift of the G peak and the presence of a high fluorescence background. Upon extending this work to mixtures of methane, argon, and hydrogen it was found that carbon nanomaterials with varying composition and morphology could be obtained. Upon mixing methane with other gases, the yield significantly dropped, causing flow conditions to be investigated as a method to increase product yield. Raman spectra of the product resulting from the irradiation of methane and argon indicated that increasing the argon content above 97% produced nanomaterial composed of hydrogenated amorphous carbon. In a second research effort, the effect of simulated solar radiation on the oxidation of arsenite [As(III)] to arsenate [As(V)] on the layered manganese oxide, birnessite, was investigated. Experiments were conducted where birnessite suspensions, under both anoxic and oxic conditions, were irradiated with simulated solar radiation in the presence of As(III) at pH 5, 7, and 9. The oxidation of As(III) in the presence of birnessite under simulated solar light irradiation occurred at a rate that was faster than in the absence of light at pH 5. At pH 7 and 9, As(V) production was significantly less than at pH 5 and the amount of As(V) production for a given reaction time was the same under dark and light conditions. The first order rate constant (kobs) for As(III) oxidation in the presence of light and in the dark at pH 5 were determined to be 0.07 and 0.04 h−1 , respectively. The As(V) product was released into solution along with Mn(II), with the latter product resulting from the reduction of Mn(IV) and/or Mn(III) during the As(III) oxidation process. Experimental results also showed no evidence that reactive oxygen species played a role in the As(III) oxidation process. Further research on the triclinic form of birnessite focused on its activation for water oxidation. Experiments were performed by converting triclinic birnessite to hexagonal birnessite in pH 3, 5, and 7 DI water with stirring for 18 hrs. Once the conversion was complete, the solid samples were characterized with TEM and x-ray photoelectron spectroscopy (XPS). The resulting hexagonal birnessites from experiment at pH 3, 5, and 7 possessed the same particle morphology and average surface oxidation states within 1% of each other. This observation supported the claim that upon transformation, Mn(III) within the sheet of triclinic birnessite migrated into the interlayer region of the resulting hexagonal birnessite. Furthermore, the migration of Mn(III) into the interlayer and formation of the hexagonal birnessite led to an increased chemical reactivity for water oxidation compared to the bulk. Electrochemical studies showed that the overpotential for water oxidation associated with the pH 3, 5, and 7 samples was 490, 510, and 570 mV, respectively. In another set of experiments, ceric ammonium nitrate was used to test birnessite for water oxidation reactivity. These experiments showed that the pH 3 birnessite produced the most O2 of all the samples, 8.5 mmol O2/mol Mn, which was ~6 times more than hexagonal birnessite which did not undergo post-synthesis exposure to low pH conditions.
Temple University--Theses
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Books on the topic "Manganese oxide"

1

Knocke, William R. Removal of soluble manganese from water by oxide-coated filter media. Denver, CO: AWWA Research Foundation and the American Water Works Association, 1990.

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Botbol, Joseph Moses. Descriptive statistics and spatial distributions of geochemical variables associated with manganese oxide-rich phases in the northern Pacific. [Washington]: U.S. G.P.O., 1989.

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Botbol, Joseph Moses. Descriptive statistics and spatial distributions of geochemical variables associated with manganese oxide-rich phases in the northern Pacific. Washington, DC: Dept. of the Interior, 1989.

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Dobrovský, Ludovít. Desoxidace oceli manganem, křemíkem, hliníkem a titanem. Praha: Academia, 1990.

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Bergin, Mark J. Response of sugar beet to applications of manganous oxide to the seed pellet and foliar spraysof manganese. Dublin: University College Dublin, 1996.

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Hezareh, Talayeh. Study on the properties of piezoelectric materials and manganese-based oxide perovskites. St. Catharines, Ont: Brock University, Dept. of Physics, 2005.

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C, Watts K., and Geological Survey (U.S.), eds. Analytical results and sample locality map for selected metals in Mn-Fe oxide-coated stream gravels, and the ratios of metals to iron and to manganese, Glen Falls 1. [Reston, Va.?]: U.S. Dept. of the Interior, Geological Survey, 1986.

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C, Watts K., and Geological Survey (U.S.), eds. Analytical results and sample locality map for selected metals in Mn-Fe oxide-coated stream gravels, and the ratios of metals to iron and to manganese, Glen Falls 1⁰. [Reston, Va.?]: U.S. Dept. of the Interior, Geological Survey, 1986.

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C, Watts K., and Geological Survey (U.S.), eds. Analytical results and sample locality map for selected metals in Mn-Fe oxide-coated stream gravels, and the ratios of metals to iron and to manganese, Glen Falls 1p0s. [Reston, Va.?]: U.S. Dept. of the Interior, Geological Survey, 1986.

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Erdreich, Linda S. Health assessment document for manganese. Washington, DC: U.S. Environmental Protection Agency, Office of Health and Environmental Assessment, 1987.

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Book chapters on the topic "Manganese oxide"

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Bing Kong, Ling, Wenxiu Que, Lang Liu, Freddy Yin Chiang Boey, Zhichuan J. Xu, Kun Zhou, Sean Li, Tianshu Zhang, and Chuanhu Wang. "Oxide Based Supercapacitors I-Manganese Oxides." In Nanomaterials for Supercapacitors, 162–276. Boca Raton, FL : CRC Press, Taylor & Francis Group, [2017] | "A Science Publishers book.": CRC Press, 2017. http://dx.doi.org/10.1201/9781315153025-4.

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Manthiram, Arumugam, and Youngjoon Shin. "Manganese oxide Cathodes for Transportation Applications." In Ceramic Transactions Series, 99–110. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118407189.ch11.

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Horowitz, Harold S., John M. Longo, Carlye Booth, and Christopher Case. "Calcium Manganese Oxide, Ca2 Mn3 O8." In Inorganic Syntheses, 73–76. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132531.ch14.

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Horowitz, Harold S., John M. Longo, Carlye Booth, and Christopher Case. "Calcium Manganese Oxide, Ca2 Mn3 O8." In Inorganic Syntheses, 68–72. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132616.ch14.

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Wroblowa, Halina S. "Rechargeable Manganese Oxide Electrodes and Cells." In Electrochemistry in Transition, 147–59. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-9576-2_11.

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Lonkai, Thomas, Uwe Amann, Dana Tomuta, Dietmar Hohlwein, and Jörg Ihringer. "Magnetostriction in Hexagonal Holmium-Manganese-Oxide." In Magnetoelectric Interaction Phenomena in Crystals, 115–23. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2707-9_9.

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Pardasani, R. T., and P. Pardasani. "Magnetic properties of lanthanide-manganese oxide." In Magnetic Properties of Paramagnetic Compounds, Magnetic Susceptibility Data, Volume 5, 15–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 2022. http://dx.doi.org/10.1007/978-3-662-65098-1_2.

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Feng, Qi. "Synthesis and Applications of Manganese Oxide Nanotubes." In Topics in Applied Physics, 73–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-03622-4_6.

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Christou, George, and John B. Vincent. "Structural Types in Oxide-Bridged Manganese Chemistry." In ACS Symposium Series, 238–55. Washington, DC: American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0372.ch012.

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Gavande, S. S., A. C. Molane, A. S. Salunkhe, Y. M. Jadhav, T. M. Nimbalkar, R. N. Mulik, and V. B. Patil. "Manganese Oxide Nanofibers for High Performance Supercapacitors." In Techno-Societal 2022, 839–45. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34648-4_85.

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Conference papers on the topic "Manganese oxide"

1

Hiroki, Tomoyuki, Daiki Shigeoka, Shinji Kimura, Toshiyuki Mashino, Shu Taira, and Yuko Ichiyanagi. "Ionization ability of manganese oxide nanoparticles." In 2010 International Conference on Enabling Science and Nanotechnology (ESciNano). IEEE, 2010. http://dx.doi.org/10.1109/escinano.2010.5701042.

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Rotteger, Chase, Scott Sayres, and Shaun Sutton. "STABILITY OF NEUTRAL MANGANESE OXIDE CLUSTERS." In 2022 International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2022. http://dx.doi.org/10.15278/isms.2022.tm07.

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Gao, Y., and C. Q. Shun. "Durability of the Zirconia based Coatings in Contact with Manganese Oxide at 1273 K." In ITSC2004, edited by Basil R. Marple and Christian Moreau. ASM International, 2004. http://dx.doi.org/10.31399/asm.cp.itsc2004p0638.

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Abstract The phase transformation and reaction of ZrO2-CaO- ZrSiO4 and ZrO2-Y2O3-ZrSiO4 coatings with manganese oxide at 1273 K were investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). SiO2 phase formed in the coatings, which was from the ZrSiO4 decomposed and easy react with manganese oxide or CaO. SiO2 has precedence over react with CaO than manganese oxides for ZrO2-CaO-ZrSiO4 coatings, and which result in to promote t-m phase transformation. On the contrary, the reaction between SiO2 and MnO is primary for the ZrO2-Y2O3-ZrSiO4 coatings and result in the damage or exfoliation on the surface of the coatings.
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Rathod, Ruchi, Shivam Kansara, Sanjeev K. Gupta, and Yogesh Sonvane. "Spin dependent calculation of calcium manganese oxide." In DAE SOLID STATE PHYSICS SYMPOSIUM 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4980587.

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Ravindra, Pramod, Eashwer Athresh, Rama Satya Sandilya, Rajeev Ranjan, and Sushobhan Avasthi. "Modulation of Conductivity in Manganese Vanadium Oxide." In 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC). IEEE, 2019. http://dx.doi.org/10.1109/pvsc40753.2019.8981228.

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Benato, R., S. Dambone Sessa, F. Bevilacqua, and F. Palone. "Measurement-based lithium-manganese oxide battery model." In 2017 AEIT International Annual Conference. IEEE, 2017. http://dx.doi.org/10.23919/aeit.2017.8240510.

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Fukunaga, Kazuhiro, Rikio Chijiiwa, Yoshiyuki Watanabe, Akihiko Kojima, Yoshihide Nagai, Nobuhiko Mamada, Toshihiko Adachi, et al. "Advanced Titanium Oxide Steel With Excellent HAZ Toughness for Offshore Structures." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20319.

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The feature of titanium oxide steel (Ti-O steel) is that heat affected zone (HAZ) toughness is improved due to the refinement of HAZ microstructure through the formation of intragranular ferrite (IGF). This desirable microstructure, IGF, forms radially from titanium oxide particles. Recently, it has been clarified that manganese in Ti-O steel is an indispensable element for the formation of IGF. Therefore, manganese effects on Ti-O steel have been basically studied in this work, and then a new effect has been found. In Ti-O steel, manganese has the effect of suppressing the formation of ferrite side plates (FSP), which are undesirable due to their coarseness. Consequently, HAZ microstructure of Ti-O steel with high manganese content is so refined that HAZ toughness is remarkably improved. Based on the manganese effects, steel plates with excellent HAZ toughness for offshore structures have been developed and commercially mass-produced. The welded joints exhibit excellent toughness.
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Hurling, S., S. Hartung, S. Kuck, K. Petermann, and G. Huber. "optical Properties of Trivalent Manganese-Doped Oxide Crystals." In EQEC'96. 1996 European Quantum Electronic Conference. IEEE, 1996. http://dx.doi.org/10.1109/eqec.1996.561934.

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Varsano, Francesca, Mariangela Bellusci, Carlo Alvani, Aurelio La Barbera, Franco Padella, and Luca Seralessandri. "Optimized Reactants Mixture and Products Hydrolysis in the Manganese Oxide Thermochemical Cycle." In ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/es2009-90257.

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A novel system composed by an aqueous slurry prepared by MnO and NaOH mixture was tested for the hydrogen production in the sodium manganese oxide thermochemical cycle. The hydrogen evolution occurs at lower temperature than conventional mixtures utilized in the cycle. Experiments performed in a Temperature Programmed Desorption/Reaction apparatus (TPD/TPR) have evidenced hydrogen production around 500°C. The hydrolysis step of α-NaMnO2 has been studied and the importance to conduct hydrolysis reaction under inert gas is discussed. A manganese disproportion mechanism is hypothesized to explain the appearance of manganese (II) and manganese (IV) containing phases.
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Vahedi, Nasser, and Alparslan Oztekin. "Parametric Study of High-Temperature Thermochemical Energy Storage Using Manganese-Iron Oxide." In ASME 2019 Heat Transfer Summer Conference collocated with the ASME 2019 13th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ht2019-3682.

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Abstract Continuous power supply in Concentrated Solar Power (CSP) plants can be achieved via integration of efficient, cost-effective and reliable Thermal Energy Storage (TES) system. The new generation of CSPs operates at higher temperatures and requires thermal storage systems with higher energy density at high storage temperature. Thermochemical Energy Storage (TCES) is the available solution which can meet performance requirements of energy density, temperature, and stability. TCES systems apply reversible endothermic/exothermic chemical reaction through which energy is stored as the enthalpy of reaction and released during the reverse mode. Among several available potential reversible chemical reactions, metal oxides, with high reaction temperature and enthalpy of reaction, have remarkable advantages compared to others. They use air both as Heat Transfer Fluid (HTF) and oxidation reactant, which eliminates the need for storage and intermediate heat exchanger integration between HTF and collector working fluid. Using air as HTF has made them perfectly fitted for the new generation of air operated solar collectors. Among several screened available potential metal oxides, cobalt and manganese oxides were selected as best candidates for high-temperature storage. Pure manganese oxide does not meet the cyclic operation requirement, but the iron-doped solid solution has proven reasonable cyclic storage performance. In this study, iron-doped manganese oxide (Fe-Mn 1:3 molar ratio) has been selected as a redox agent for TCES reactor. The cylindrical packed bed configuration is considered as a reactor bed configuration. A two-dimensional axisymmetric numerical model is developed using the finite element method. Performance analysis for both charge and discharge is provided separately. The effect of inflow rate and bed porosity variations on reactor performance in complete storage cycle were studied.
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Reports on the topic "Manganese oxide"

1

Zhao, P., M. Johnson, S. Roberts, and M. Zavarin. Np and Pu Sorption to Manganese Oxide Minerals. Office of Scientific and Technical Information (OSTI), August 2005. http://dx.doi.org/10.2172/883729.

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Scot T. Martin. Growth and Dissolution of Iron and Manganese Oxide Films. Office of Scientific and Technical Information (OSTI), December 2008. http://dx.doi.org/10.2172/951969.

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Blacic, J., D. Pettit, and D. Cremers. Preliminary LIBS analysis of Yucca Mountain manganese oxide minerals. Office of Scientific and Technical Information (OSTI), January 1996. http://dx.doi.org/10.2172/176765.

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Nitsche, Heino, and R. Jeffrey Serne. Transuranic Interfacial Reaction Studies on Manganese Oxide Hydroxide Mineral Surfaces Project Number: 70176. Office of Scientific and Technical Information (OSTI), June 2001. http://dx.doi.org/10.2172/833638.

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Francis, Todd M., Paul R. Lichty, Christopher Perkins, Melinda Tucker, Peter B. Kreider, Hans H. Funke, A. Lewandowski, and Alan W. Weimer. Solar-thermal Water Splitting Using the Sodium Manganese Oxide Process & Preliminary H2A Analysis. Office of Scientific and Technical Information (OSTI), October 2012. http://dx.doi.org/10.2172/1053709.

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Susarla, Naresh, and Shabbir Ahmed. Estimating the cost and energy demand of producing lithium manganese oxide for Li-ion batteries. Office of Scientific and Technical Information (OSTI), March 2020. http://dx.doi.org/10.2172/1607686.

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Poirier, M. R. Comparison of Cross Flow Filtration Performance for Manganese Oxide/Sludge Mixtures and Monosodium Titanate/Sludge Mixtures. Office of Scientific and Technical Information (OSTI), June 2002. http://dx.doi.org/10.2172/799454.

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Barnes, M. J. Strontium and Actinides Removal from Savannah River Site Actual Waste Samples by Freshly Precipitated Manganese Oxide. Office of Scientific and Technical Information (OSTI), October 2002. http://dx.doi.org/10.2172/803397.

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Barnes, M. J. Strontium and Actinides Removal from Savannah River Site Actual Waste Samples by Freshly Precipitated Manganese Oxide. Office of Scientific and Technical Information (OSTI), October 2003. http://dx.doi.org/10.2172/817623.

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Renew, Jay, and Tim Hansen. Geothermal Thermoelectric Generation (G-TEG) with Integrated Temperature Driven Membrane Distillation and Novel Manganese Oxide for Lithium Extraction. Office of Scientific and Technical Information (OSTI), June 2017. http://dx.doi.org/10.2172/1360976.

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