Relevant bibliographies by topics / Methanol

Academic literature on the topic 'Methanol'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 July 2024

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Journal articles on the topic "Methanol"

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Tselishchev, Oleksii, Ayodeji Ijagbuji, Maryna Loriia, and Vanadii Nosach. "Synthesis of Methanol from Methane in Cavitation Field." Chemistry & Chemical Technology 12, no. 1 (March 21, 2018): 69–73. http://dx.doi.org/10.23939/chcht12.01.069.

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Rajendrasozhan, Saravanan, Hani El Moll, Mejdi Snoussi, Ramy M. Romeilah, Emad A. Shalaby, Kareem M. Younes, and Hossam S. El-Beltagi. "Phytochemical Screening and Antimicrobial Activity of Various Extracts of Aerial Parts of Rhanterium epapposum." Processes 9, no. 8 (July 31, 2021): 1351. http://dx.doi.org/10.3390/pr9081351.

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Rhanterium epapposum, native to the Arabian Peninsula, is traditionally used to cure skin infections. The objective is to screen the phytochemical content and antimicrobial activity of aqueous, methanol and 80% methanol extracts of aerial parts of R. epapposum. The phytochemical screening of aqueous, methanolic, and 80% methanol extracts of R. epapposum was conducted using gas chromatographymass spectrometry. The antimicrobial activities of the extracts were assessed by well diffusion and microdilution methods. Qualitative phytochemical analysis revealed the presence of 2-methoxy-4-vinylphenol in all three extracts, whereas ethanol, 2-methoxy-, acetate; n-hexadecanoic acid; and 2,3-butanediol are present in higher amount exclusively in the methanol, 80% methanol and aqueous extracts of the aerial parts of R. epapposum, respectively. The highest antibacterial activity was shown by the aqueous extract S. aureus, P. aeruginosa, E. cloacae, and K. pneumoniae, methanolic extract against S. aureus, methicillin-resistant S. aureus, and E. coli, and 80% methanol extract against S. epidermidis, and S. paucimobilis. Interestingly, 80% methanol extracts showed the highest antifungal activity against C. albicans, C. guillermondii, C. vaginalis, C. utilis, and C. tropicalis. The aerial parts of R. epapposum showed broad-spread antimicrobial activity against bacteria and fungi. Especially, the 80% methanol extract showed potent antifungal activity against all the tested fungal strains.
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Karouche, S., S. Karouche, A. Benbott, A. Benbott, S. Henouda, S. Malki, and I. Boudchicha. "Evaluation of phenolic content and biological activities of Bunium mauritanicum tuberss." Journal of Fundamental and Applied Sciences 12, no. 2 (May 24, 2023): 916–30. http://dx.doi.org/10.4314/jfas.v12i2.27.

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The present work is carried out to evaluate biological activities of tubers extracts of Bunium mauritanicum. The methanol extract yield had higher (7.81%) tha n that of the aqueous extract (6.79%). The quantitative analysis of total phenols and flavonoid revealed that the highest concentration was recorded for the methanoic fraction with 89,442 ± 5,951μg EAG mg and 4.031 ± 0.141 μg EQ mg of extract respectively. In addition, the aqueous extract of tubers represents the most important antioxidant activity with an IC 50 of 0.14 mg ml against 2,2 diphenyl 1 picryl hydrazyl (DPPH Wherea s, the two extracts of the tubers have low reducing capacities compared to standard with EC 50 equal to 0.048 mg/ ml for the methanolic extract, 0.018 mg ml for t he aqueous extract and 0.009 mg/ ml for ascorbic acid. The methano l ic and aqueous extracts of Bunium mauritanicum reacted positively at least on one of the bacterial strains studied.
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Weijma, J., and A. J. M. Stams. "Methanol conversion in high-rate anaerobic reactors." Water Science and Technology 44, no. 8 (October 1, 2001): 7–14. http://dx.doi.org/10.2166/wst.2001.0452.

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An overview on methanol conversion in high-rate anaerobic reactors is presented, with the focus on technological as well as microbiological aspects. The simple C1-compound methanol can be degraded anaerobically in a complex way, in which methanogens, sulfate reducing bacteria and homoacetogens interact cooperatively or competitively at substrate level. This interaction has large technological implications as it determines the final product of methanol mineralization, methane or carbon dioxide. The degradation route of methanol may be entirely different when environmental conditions change. Direct methanogenesis from methanol seems the predominant mineralization route under mesophilic conditions both in the absence and the presence of sulfate. Under thermophilic conditions methanol oxidation to carbon dioxide and hydrogen appears to play an important role. The UASB technology for mesophilic digestion of methanolic waste has presently reached full-scale maturity. The potential of methanol as feedstock for anaerobic processes is discussed.
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Hashim, N. A., H. Ya'akob, M. N. M. Rosdi, N. A. Zainol, F. Husin, H. H. Soib, and N. F. Norhisham. "Antioxidant properties of extracts and SPE fractions from Annona muricata leaves." Food Research 4, S2 (April 16, 2020): 71–75. http://dx.doi.org/10.26656/fr.2017.4(s2).s02.

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Annona muricata L. (Magnoliales: Annonaceae) is a tropical plant species known for its edible fruit and well known for the medicinal value. In this study, the antioxidant properties of A. muricata leaves is evaluated for different extracts and fractions. The airdried leaves of A. muricata leaves were successively extracted with n-hexane and methanol. The methanolic crude extract was further semi-purified by utilizing solid-phase extraction (SPE) in a mixture of mobile phase aqueous: methanol to methanol and resulted in four semi-purified fractions (ALM 1 – ALM 4). Antioxidant properties of extracts and fractions were evaluated by free radical scavenging activity against 1,1-Diphenyl-2- picrylhydrazyl (DPPH) radicals comparing with standard ascorbic acid, quercetin, and catechin. Results indicated that methanolic extracts showed exceptionally higher radical scavenging activity compared with n-hexane crude extract with IC50 44.21 µg/mL and 302.41 µg/mL, respectively. Meanwhile, fractions ALM 2 (aqueous: methanol; 50: 50) exhibited the highest scavenging activity with the IC50 of 12.46 µg/mL followed by ALM 1 (aqueous: methanol; 80: 20) with 51.44 µg/mL, ALM 3 (aqueous: methanol; 20: 80) with 54.39 µg/mL and ALM 4 (100% methanol) with 89.02 µg/mL, respectively. In conclusion, ALM 2 could be potentially applied as a natural antioxidant agent in both food, nutraceuticals or pharmaceuticals fields for health promotion. However, ALM 2 has to be further purified to study the constituents which possibly condensed mainly with phenolic and flavonoids that known to possess the highest antioxidant effects.
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Sharma, Leihaothabam Dinendra, Md Riyajuddin Khan, and Angom Kikim Devi. "Methanolic and ethanolic phytochemical screening of Sweet flag (Acorus calamus L.) rhizome." Journal of Drug Delivery and Therapeutics 13, no. 9 (September 15, 2023): 114–18. http://dx.doi.org/10.22270/jddt.v13i9.6223.

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Acorus calamus is a medicinal plant with several ethno-medicinal properties. The present study was carried to screen the presence of major phytochemical groups. Phytochemical screening of methanolic and ethanolic rhizome extract showed the presence of carbohydrates, alkaloids, phenolic compound, protein, amino acid flavanoids and tannins. The total phenolic content in methanolic and ethanolic rhizome extracts in terms of gallic acid equivalent was 4.77.50 and 7.5 mg/g of extract powder respectively whereas the total flavonoid content of methanolic and ethanolic extract was 12.02 and 12.89 mg QE/g of extract respectively. Total antioxidant activity was found highest in ethanol extract (75.6 µg AAE/mg of extract) than methanol extract (37.2 µg AAE/mg of extract). Reducing power is also found highest in ethanol extract than methanol extract. Keywords: Acorus calamus, phytochemical screening, methanol, ethanol.
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PERBONI, LAÍS TESSARI, DIRCEU AGOSTINETTO, CANDIDA RENATA JACOBSEN DE FARIAS, FÁBIO CLASEN CHAVES, and JÉSSICA RODRIGUES GARCIA. "ANTIFUNGAL ACTIVITY OF Heteranthera reniformis EXTRACTS AGAINST Bipolaris oryzae1." Revista Caatinga 34, no. 2 (June 2021): 339–49. http://dx.doi.org/10.1590/1983-21252021v34n210rc.

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ABSTRACT Plants synthesize specialized metabolites to defend themselves against pathogens. These active compounds, when isolated and identified, can be used as template for fungicide development. Based on field observations, Heteranthera reniformis (kidney leaf mudplantain) could potentially synthesize compounds with antifungal activity. The goal of this study was to evaluate the fungicidal activity of H. reniformis leaf extracts on Bipolaris oryzae development. The activities of hexane, ethyl acetate, and methanol extracts of H. reniformis leaves were tested on mycelial growth, sporulation, and colony morphology. Due to the highest inhibition of B. oryzae sporulation, methanol extract was chosen for concentration tests. The effect of methanol extract on B. oryzae spore length and germination was also evaluated. Methanolic extract was the most active in inhibiting B. oryzae sporulation. The morphology of the colonies is altered when the fungus grows in medium containing H. reniformis leaf extracts. Higher concentration of methanol extract stimulates mycelial growth and suppresses B. oryzae sporulation. There are reductions in length and number of germinated B. oryzae spores caused by methanol extract of H. reniformis leaves. Methanolic extract has compounds with antifungal activity and should be subjected to bioassay-guided isolation for purification and identification of these active compounds.
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Binuwangi, Amugoda Kankanamge Dona Malsha, Madinage Pawani Jayathri Perera, Asurumunige Anushka Gayathrie Silva, Renuka Nilmini Attanayake, and Chandima Shashikala Kumari Rajapakse. "Antioxidant, a-Amylase Inhibitory Activities and Photoprotective Properties of Peels of Nephelium Lappaceum Linn. (Malwana Special)." Oriental Journal Of Chemistry 37, no. 2 (April 30, 2021): 499–507. http://dx.doi.org/10.13005/ojc/370233.

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This study focused on evaluation of antioxidant, α-amylase inhibitory activities and photo protective properties of peels of Nephelium lappaceum Linn. (rambutan); Malwana special. Methanolic extract of peels was sequentially partitioned in hexane, dichloromethane (DCM) and aqueous methanol. The methanol extract showed a significantly (p < 0.05) higher DPPH radical scavenging activity than that of butylated hydroxytoluene. Among the fractions, the highest total phenolic content (TPC) was found in the aqueous methanol fraction. DCM and aqueous methanol fractions were rich in flavonoids. In vitro α-amylase inhibitory activity of the aqueous methanol fraction was also significantly higher than the standard drug, acarbose. Partially purified aqueous methanol fraction of rambutan peels exhibited UV-B absorption with a moderate solar protection factor. The results revealed that the peels of Nephelium lappaceum Linn., Malwana specialcan be considered as a promising source for the development of natural antioxidant, cosmeceutical sunscreen and antidiabetic agents.
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Lawrence, Reena, Kapil Lawence, Manisha Prasad, and Ritika Singh. "ANTIOXIDANT ACTIVITY OF METHANOL EXTRACT OF ZINGIBER OFFICINALE GROWN IN NORT INDIAN PLAINS." Scientific Temper 1, no. 01 (February 4, 2010): 117–20. http://dx.doi.org/10.58414/scientifictemper.2010.01.1.19.

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The present investigation evaluates the antioxidant activity of methanolof extract of Zingiber officinale (family-Zingiberaceae).The hydrogen donating abilityof methanol extract of ginger was measured by reduction of DPPH and potassiumferricyanide. It was observed that the antioxidant activity of methanol extractincreases proportionately with concentration.
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Tönges, Yannic, Vincent Dieterich, Sebastian Fendt, Hartmut Spliethoff, and Jakob Burger. "Techno-Economic Analysis of Large Scale Production of Poly(oxymethylene) Dimethyl Ether Fuels from Methanol in Water-Tolerant Processes." Fuels 4, no. 1 (January 6, 2023): 1–18. http://dx.doi.org/10.3390/fuels4010001.

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Poly(oxymethylene) dimethyl ether (OME) are a much-discussed and promising synthetic and renewable fuel for reducing soot and, if produced as e-fuel, CO2 emissions. OME production is generally based on the platform chemical methanol as an intermediate. Thus, the OME production cost is strongly dependent on the methanol cost. This work investigates OME production from methanol. Seven routes for providing methanolic formaldehyde solutions are conceptually designed for the first time and simulated in a process simulator. They are coupled with a state-of-the-art OME synthesis to evaluate the economics of the overall production chain from methanol to OME. For a plant size of 100 kt/a, the average levelized product cost of OME is 79.08 EUR/t plus 1.31 times the cost of methanol in EUR/t.
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Dissertations / Theses on the topic "Methanol"

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Squire, Gavin Daniel. "Partial oxidation of methane to methanol and formaldehyde." Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278072.

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Chellappa, Anand S. "Methane conversion to methanol : homogeneous and catalytic studies /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9842517.

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Matthews, Terry. "The Partial Oxidation of Methane to Methanol & Formaldehyde." TopSCHOLAR®, 1987. https://digitalcommons.wku.edu/theses/2602.

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The conversion of methane into methanol is viewed as one approach to utilizing the vast reserves of natural gas. One such prospect for the utilization of natural gas is the partial oxidation of methane to methanol. Methanol ranks high on the commodity market. As a liquid it is easily transportable and therefore skirts the issue of vast amounts of a gas having to be transported either by pipeline or by liquifying. The catalytic partial oxidation of methane to methanol is investigated. Two different reactor systems are employed. The first system is a fixed bed system. The second is a fluid bed system. Areas to be addressed are different catalyst systems, different loading rates, elemental promotion, different supports, surface area, catalyst particle mesh size, and effects of preparation.
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Afonso, Joana da Costa Franco. "Catalytic hydrogenation of carbon dioxide to form methanol and methane." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10854.

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Olsson, Susanna. "Dynamics of a spin-forbidden reaction transforming methane to methanol." Thesis, Uppsala universitet, Institutionen för kemi - BMC, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-385895.

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Prince, Bruce M. "The Mechanisms of Methane C–H Activation and Oxy-insertion Via Small Transition Metal Complexes: a DFT Computational Investigation." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500116/.

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Our country continues to demand clean renewable energy to meet the growing energy needs of our time. Thus, natural gas, which is 87% by volume of methane, has become a hot topic of discussion because it is a clean burning fuel. However, the transportation of methane is not easy because it is a gas at standard temperature and pressure. The usage of transition metals for the conversion of small organic species like methane into a liquid has been a longstanding practice in stoichiometric chemistry. Nonetheless, the current two-step process takes place at a high temperature and pressure for the conversion of methane and steam to methanol via CO + H2 (syngas). The direct oxidation of methane (CH4) into methanol (CH3OH) via homogeneous catalysis is of interest if the system can operate at standard pressure and a temperature less than 250 C. Methane is an inert gas due to the high C-H bond dissociation energy (BDE) of 105 kcal/mol. This dissertation discusses a series of computational investigations of oxy-insertion pathways to understand the essential chemistry behind the functionalization of methane via the use of homogeneous transition metal catalysis. The methane to methanol (MTM) catalytic cycle is made up of two key steps: (1) C-H activation by a metal-methoxy complex, (2) the insertion of oxygen into the metal−methyl bond (oxy-insertion). While, the first step (C-H activation) has been well studied, the second step has been less studied. Thus, this dissertation focuses on oxy-insertion via a two-step mechanism, oxygen-atom transfer (OAT) and methyl migration, utilizing transition metal complexes known to activate small organic species (e.g., PtII and PdII complexes). This research seeks to guide experimental investigations, and probe the role that metal charge and coordination number play.
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Waller, David. "Methanol synthesis catalysts." Thesis, University of Bath, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.495621.

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The commercial synthesis of methanol from C02, CO and H2 is achieved using copper-zinc oxide catalysts based on the low pressure process developed by I. C. I. Copper-zinc oxide based catalysts are generally prepared by the coprecipitation of a hydroxide, hydroxycarbonate or hydroxynitrate precursor followed by calcination and reduction. Ye have investigated how the structure and composition of precursor phases affects the dispersion of CuO and ZnO in the calcined catalysts and Cu in the reduced catalysts. Parameters which control precursor formation, including the method of mixing the reagents, pH, Cu/Zn ratio and the presence or absence of aluminium and precursor ageing were studied. Precursor phases which contain all the catalyst components give rise to highly dispersed copper and zinc oxide after reduction. Zincian-malachite (Cuz-xZnx(OH)2CO3) gives rise to higher copper dispersion than aurichalcite (Cus-xZnx(OH)e(CO3)2) although both contain copper and zinc. This is because the malachite precipitate has a much smaller particle size than aurichalcite which, together with a homogeneous composition hinders growth of CuO and ZnO during calcination giving rise to a high dispersion. The activity of the reduced catalysts towards methanol synthesis and the reverse water-gas shift reaction were determined and the results support the proposal that the active site for these reactions is located on the metallic copper surface.
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Hammond, Charles Rhodri. "Partial oxidation of methane to methanol using modified mixed metal oxides." Thesis, Cardiff University, 2004. http://orca.cf.ac.uk/54537/.

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The current steam reforming process for the production of CH3OH is complicated and difficult, and therefore the direct partial oxidation of CH4 to CH3OH would be economically desirable. In previous work a design approach for a selective partial oxidation catalyst has been investigated, which comprises the combination of components with a desired reactivity, producing a successful selective partial oxidation catalyst. In this approach, it is considered a successful partial oxidation catalyst must activate methane, activate oxygen and not destroy the desired product, methanol. All these properties could not be found in a single catalyst, so it was proposed that two synergistic components could be combined, one responsible for methane activation and the other for oxygen activation/insertion. Previous work has studied the CH4/D2 exchange reaction as an indication of the ability of a metal oxide surface to activate CH4. Two metal oxides demonstrated appreciable activity for the activation of CH4, these being Ga2C3 and ZnO. These oxides were then doped with different metals in order to try and increase the activity of the catalyst. The doping of Ga2O3 with Zn or Mg did not improve the methane oxidation properties of Ga2C3, and the doping of ZnO with Ga significantly lowered the light off temperature, the temperature at which CH4 was first detected, and increased its oxidative capacity. The addition of precious metals significantly affected the catalysts ability to activate CH4. The addition of Au to the Ga and Zn catalysts dramatically reduced the light off temperature, and increased its rate of oxidation at lower temperatures, with the optimum loading 2% for both catalysts. For GaO(OH) and ZnO, the addition of 1%Au and l%Pt by coprecipitation produced a synergistic effect, producing lower light offs and higher CH4 conversion than the singly doped catalysts with Au and Pt separately. When the methane activation catalysts were combined with MoO3 in a physical mixture, a number of the mixtures produced higher methanol per pass percentage yields than its constituent parts. It is concluded that the increased methane activation properties beneficially interact with the oxygen activation and insertion properties of MoO3. However, none of the yields reported were significantly higher. A dual bed system, with the lower layer comprising the methane activation catalysts, and the upper layer consisting of MoO 3 was tested. The results for this system were promising, with the low temperature activation of CH4, combined with the oxygen insertion ability of MoO3, producing high selectivities of CH3OH at much lower temperatures. The best results were obtained when the ratio of the two layers was 50:50 with respect to 2%Au ZnO and MoO3. In previous work a design approach for a selective partial oxidation catalyst has been investigated, by combining components with a desired reactivity to produce a successful selective partial oxidation catalyst, which must activate methane and oxygen, and not destroy methanol. All these properties could not be found in a single catalyst, so it was proposed that two synergistic components could be combined, one responsible for methane activation and the other for oxygen activation/insertion. The doping of ZnO with Ga significantly lowered the light off temperature, and increased its oxidative capacity, an effect which was not seen with the doping of Ga2O3 with Zn or Mg. The addition of Au to the Ga and Zn catalysts dramatically reduced the light off temperature, and increased its rate of oxidation at lower temperatures, both with optimum loading of 2%. The addition of l%Au and l%Pt produced a synergistic effect, producing lower light offs and higher CH4 conversion than the singly doped catalysts with Au and Pt separately. When the methane activation catalysts were combined with MoO3 in a physical mixture, a number of the mixtures produced higher methanol per pass percentage yields than its constituent parts. It is concluded that the increased methane activation properties beneficially interact with the oxygen activation and insertion properties of MoO3. The dual bed system, with the lower layer comprising the methane activation catalysts, and the upper layer consisting of MoO 3 produced promising results, with the low temperature activation of CH4, combined with the oxygen insertion ability of MoO3, producing high selectivities of CH3OH at much lower temperatures. The best results were obtained when the ratio of the two layers was 50:50 with respect to 2%Au ZnO and MoO3. (Abstract shortened by UMI.).
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Krämer, Alexander. "Heterogen katalysierte Partialoxidationen in überkritischem Wasser die selektive Oxidation von Methanol, Methan und Propen an Kupfer und Kupferlegierungen /." [S.l. : s.n.], 2001. http://elib.tu-darmstadt.de/diss/000107/kraemer.pdf.

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Bröll, Dirk. "Partialoxidationen in überkritischem Wasser mit molekularem Sauerstoff die Reaktionen von Methanol, Methan und Propylen mit und ohne Silberkatalysatoren /." [S.l. : s.n.], 2001. http://elib.tu-darmstadt.de/diss/000118/.

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Books on the topic "Methanol"

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Murrell, J. Colin, and Howard Dalton, eds. Methane and Methanol Utilizers. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7.

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C, Murrell J., and Dalton Howard, eds. Methane and methanol utilizers. New York: Plenum Press, 1992.

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Agarwal, Avinash Kumar, Hardikk Valera, Martin Pexa, and Jakub Čedík, eds. Methanol. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1280-0.

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Agarwal, Avinash Kumar, Hardikk Valera, Martin Pexa, and Jakub Čedík, eds. Methanol. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1224-4.

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D, Osterloh John, United States. Agency for Toxic Substances and Disease Registry, and DeLima Associates, eds. Methanol toxicity. Atlanta, GA: U.S. Dept. of Health & Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry, 1992.

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Clary, John J., ed. The Toxicology of Methanol. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118353110.

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Asinger, Friedrich. Methanol — Chemie- und Energierohstoff. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-70763-6.

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Clary, John J. The toxicology of methanol. Hoboken, N.J: Wiley, 2012.

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Joint Conference on the Introduction and Development of Methanol as an Alternative Fuel (1986 Columbus, Ohio). Methanol: An alternate fuel. New York, N.Y. (345 East 47th St., New York 10017): American Society of Mechanical Engineers, 1986.

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Philp, R. J. Methanol production from biomass. Ottawa, Ont: National Research Council of Canada, 1986.

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Book chapters on the topic "Methanol"

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de Koning, W., and W. Harder. "Methanol-Utilizing Yeasts." In Methane and Methanol Utilizers, 207–44. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7_7.

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Hanson, Richard S. "Introduction." In Methane and Methanol Utilizers, 1–21. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7_1.

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Green, Peter N. "Taxonomy of Methylotrophic Bacteria." In Methane and Methanol Utilizers, 23–84. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7_2.

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Dalton, Howard. "Methane Oxidation by Methanotrophs." In Methane and Methanol Utilizers, 85–114. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7_3.

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Murrell, J. Colin. "The Genetics and Molecular Biology of Obligate Methane-Oxidizing Bacteria." In Methane and Methanol Utilizers, 115–48. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7_4.

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Dijkhuizen, L., P. R. Levering, and G. E. de Vries. "The Physiology and Biochemistry of Aerobic Methanol-Utilizing Gram-Negative and Gram-Positive Bacteria." In Methane and Methanol Utilizers, 149–81. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7_5.

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Lidstrom, Mary E. "The Genetics and Molecular Biology of Methanol-Utilizing Bacteria." In Methane and Methanol Utilizers, 183–206. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7_6.

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Leak, David J. "Biotechnological and Applied Aspects of Methane and Methanol Utilizers." In Methane and Methanol Utilizers, 245–79. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-2338-7_8.

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Kobayashi, Kensei. "Methanol." In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_980-4.

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Kobayashi, Kensei. "Methanol." In Encyclopedia of Astrobiology, 1554. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_980.

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Conference papers on the topic "Methanol"

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Moore, R. "Indirect-methanol and direct-methanol fuel cell vehicles." In 35th Intersociety Energy Conversion Engineering Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-3038.

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PRESSER, C., H. SEMERJIAN, A. GUPTA, and C. AVEDISIAN. "Combustion of methanol and methanol/dodecanol spray flames." In 26th Joint Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-2446.

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Wang Shuping and Zhu Jianjun. "Test of metal corrosion by methanol and methanol-gasoline." In 2010 International Conference on Advances in Energy Engineering (ICAEE). IEEE, 2010. http://dx.doi.org/10.1109/icaee.2010.5557621.

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Cocco, Daniele, and Vittorio Tola. "SOFC-MGT Hybrid Power Plants Fuelled by Methane and Methanol." In ASME 8th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2006. http://dx.doi.org/10.1115/esda2006-95482.

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In this paper the use of methane and methanol in SOFC-MGT hybrid power plants has been compared. As a matter of fact, SOFC-MGT hybrid plants are a very attractive near term option, as they can allow to achieve efficiencies of over 60–65%, even for small power outputs (200–400 kW). The SOFC systems currently developed are fuelled with natural gas, which is reformed inside the same stack at about 800–900 °C. However, the use of alternative fuels with low reforming temperature (for example, methanol reforms at about 250–300 °C) can lead to enhanced hybrid plant performance. In particular, this paper reports a comparative performance analysis of internally reformed SOFC-MGT power plants fuelled by methane and methanol. Moreover, in the case of methanol use, both internal and external reforming have been compared. The performance analysis has been carried out by considering different values for the most important operating parameters of the fuel cell. The comparative analysis has demonstrated that simply replacing methane with methanol in SOFC-MGT power plants slightly reduces the efficiency. However, the use of methanol in SOFC-MGT power plants with external reforming enhances efficiency significantly (by about 4–5 percentage points). The study shows that the use of methanol with external fuel reforming raises stack efficiency thanks to the improved heat management and to the higher hydrogen partial pressure.
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Cocco, Daniele, and Vittorio Tola. "Comparative Performance Analysis of Internal and External Reforming of Methanol in SOFC-MGT Hybrid Power Plants." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90762.

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SOFC-MGT hybrid power plants are a very attractive near term option, as they achieve efficiencies of over 60% even for small power outputs (200–400 kW). The SOFC hybrid systems currently developed are fuelled with natural gas, which is reformed inside the same stack at about 800–900 °C. However, the use of alternative fuels with a lower reforming temperature can lead to enhanced performance of the hybrid power plant. This paper reports a comparative performance analysis of SOFC-MGT power plants fuelled by methane and methanol. Since the reforming temperature of methanol (250–300 °C) is significantly lower than that of methane (700–900 °C), for the methanol fuelled plant both internal and external reforming have been examined. The performance analysis has been carried out by considering different values for the most important operating parameters of the fuel cell. The comparative analysis has demonstrated that simply replacing methane with methanol in SOFC-MGT power plants with internal reforming slightly reduces the efficiency. However, the use of methanol in SOFC-MGT power plants with external reforming enhances efficiency significantly (by about 4 percentage points). The use of methanol with external fuel reforming raises efficiency of the stack thanks to the improved heat management and to the higher hydrogen partial pressure at the anode inlet.
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Chen, Peng-Yu, Wei-Hui Chen, and Che-Wun Hong. "Nanofludic Analysis on Methanol Crossover of Direct Methanol Fuel Cells." In ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer. ASMEDC, 2008. http://dx.doi.org/10.1115/mnht2008-52095.

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Direct methanol fuel cells (DMFCs) are considered as a competitive power source candidate for portable electronic devices. Nafion® has been widely used for the electrolyte of DMFCs because of its good proton conductivity and high chemical and mechanical stability. However, the major problem that must be solved before commercialization is the high methanol crossover through the membrane. There are a number of studies on experiments about the methanol crossover rate through the membrane but only few theoretical investigations have been presented [1–3]. In this paper, an atomistic model [4] is presented to analyze the molecular structure of the electrolyte and dynamic properties of nanofluids at different methanol concentration. In the same time, the nano-scopic phenomenon of methanol crossover through the membrane is observed. The simulation system consists of the Nafion fragments, hydronium ions, water clusters and methanol molecules. Fig. 1 shows the simplified Nafion fragment in our simulation. Both intra- and inter-molecular interactions were involved in this study. Intermolecular interactions include the van der Waals and the electrostatic potentials. Intramolecular interactions consist of bond, angle and dihedral potentials. The force constants used above were determined from the DREIDING force field. The SPC/E model was employed for water molecules. The three-site OPLS potential model was utilized for the intermolecular potential in methanol. Each proton which migrates inside the electrolyte is assumed to combine with one water molecule to form the hydronium (H3O+). The force parameters for the hydronium were taken from Burykin et al [5]. The atomistic simulation was carried out on the software DLPOLY. First, a 500 ps NPT ensemble was performed to make the system reach a proper configuration. This step was followed by another 500 ps NVT simulation. All molecular simulations were performed at a temperature of 323K with three-dimensional periodic boundary conditions. The intermolecular interactions were truncated at 10 Å and the equations of motion were solved using the Verlet scheme with a time step of 1 fs. Fig. 2 shows the calculated density of the simulation system for different methanol concentrations at 323K. It can be seen that the density decreases with the methanol uptakes. The volume of the system increases as the methanol concentration increases, which means that the membrane swelling with methanol uptakes. The radial distribution functions (RDFs) of the ether-like oxygen (O2) toward water and methanol molecules for different methanol concentrations at 323K are shown in Fig. 3. From this figure, we find that methanol molecules can reside in the vicinity of the hydrophobic part of the side chain while water can not. Fig. 4 shows the RDFs between the oxygen atom of the sulfonic acid groups (O3) and solvents for different methanol concentrations at 323K. As shown in Fig. 4, both water and methanol have a tendency to cluster near the sulfonic acid groups, but water molecules prefer to associate with the sulfonic acid groups in comparison with methanol molecules. The mean square displacements (MSDs) of water and methanol molecules for different methanol concentrations at 323K are displayed in Fig. 5. It is shown that MSD curves have a linear tendency, which means both water and methanol molecules are diffusing in the system during the simulation. As the methanol concentration increases, the slope of MSD curve increases for methanol and decreases for water. This indicates higher methanol content constrains the mobility of water molecules but enhances the mobility of methanol molecules that cross the electrolyte. In summary, molecular simulations of the Nafion membrane swollen in different methanol concentrations (0, 11.23, 21.40, 46.92 wt%) at 323K have been carried out. Both methanol migration mechanism and hydronium diffusion phenomenon have been visualized by monitoring the trajectories of the specific species in the system. MSDs are used to evaluate the mobility and shows that the higher the methanol concentration, the greater the tendency of methanol crossover.
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Mudiraj, Shyam P., and Oscar D. Crisalle. "Methanol concentration estimation in a direct methanol fuel cell system." In 2014 American Control Conference - ACC 2014. IEEE, 2014. http://dx.doi.org/10.1109/acc.2014.6859458.

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Mohan, Sujith, and S. O. Bade Shrestha. "Evaluation of the Performance Characteristics of a Direct Methanol Fuel Cell With Multi Fuels." In ASME 2009 7th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2009. http://dx.doi.org/10.1115/fuelcell2009-85161.

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Direct methanol fuel cells are one of the alternate power sources for the field of power electronics because of their high energy density. The benefits of a fuel cell towards the environment can be greatly improved if the fuel used for its application comes from renewable sources. In this study, the performance of a direct methanol fuel cell was investigated under five different methanol concentrations. The effect of methanol concentration on the cell operating temperature is studied. Impedance spectroscopy was conducted to measure the ohmic, activation and mass transport losses for all concentrations. The cell performance was evaluated using methane and ethanol fuels and this was compared with methanol operation.
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Gardiner, D. P., M. F. Bardon, V. K. Rao, and V. Battista. "Review of the Cold Starting Performance of Methanol and High Methanol Blends in Spark Ignition Engines: Neat Methanol." In International Fuels & Lubricants Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1990. http://dx.doi.org/10.4271/902154.

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Jorgensen, Scott W., Robert L. Furey, and Kevin L. Perry. "A Simple Method to Determine the Methanol Content of Methanol Fuels." In International Fuels & Lubricants Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1991. http://dx.doi.org/10.4271/912421.

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Reports on the topic "Methanol"

1

Falconer, J. L., and R. D. Noble. Direct methane conversion to methanol. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/6744589.

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Noble, R. D., and J. L. Falconer. Direct methane conversion to methanol. Office of Scientific and Technical Information (OSTI), February 1992. http://dx.doi.org/10.2172/6599498.

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Skone, Timothy J. Coal to Methanol. Office of Scientific and Technical Information (OSTI), July 2015. http://dx.doi.org/10.2172/1509352.

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Fritts, S. D., and R. K. Sen. Assessment of methanol electro-oxidation for direct methanol-air fuel cells. Office of Scientific and Technical Information (OSTI), July 1988. http://dx.doi.org/10.2172/7129968.

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Olah, George, and G. K. Prakash. The Methanol Economy Project. Office of Scientific and Technical Information (OSTI), February 2014. http://dx.doi.org/10.2172/1133094.

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Savidge. L52322 Effects of Methanol on Gas Measurement. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 2007. http://dx.doi.org/10.55274/r0010057.

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Upstream natural gas and related fluid operations often require the injection of methanol to prevent flow line constrictions and blockages caused by water and natural gas hydrates. Both the constrictions and methanol have a significant impact on measurement accuracy. Natural gas chromatographic analysis and related measurement practices do not account for constrictions or methanol in natural gas streams. API 14.2, A.G.A. Report No.8, A.G.A. Report No.10, ISO 12213, ISO 20765 and GPA 2172 do not account for methanol. Measurement and operation practices rely on accurate information to reduce errors. This report analyzes the effect of methanol on gas measurement physical properties. It establishes the relative effect of methanol on the physical properties by applying the Gas Research Institute's high accuracy equation of state for natural gases as distributed by API, A.G.A, ISO and others as API MPMS Chapter 14.2, A.G.A. Report No.8, A.G.A. Report No.10, ISO 12213 Part 2, and ISO 20765. It applies GPA 2172 for the analysis of the sensitivity of the heating value to methanol.
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Noble, R. D., and J. L. Falconer. Direct methane conversion to methanol. Annual report, October 1993--September 1994. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/49116.

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Jiang, Yuan, Shuang Xu, Jotheeswari Kothandaraman, Lesley Snowden-Swan, Marye Hefty, and Marcella Whitfield. Emerging Technologies Review: Carbon Capture and Conversion to Methane and Methanol. Office of Scientific and Technical Information (OSTI), January 2024. http://dx.doi.org/10.2172/2325005.

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Tierney, J. W., and I. Wender. A novel process for methanol synthesis. [Concurrent sythesis of methly formate and methanol]. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/7025962.

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Skone, Timothy J. Coke to Methanol Plant Installation. Office of Scientific and Technical Information (OSTI), December 2013. http://dx.doi.org/10.2172/1509015.

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