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Relevant bibliographies by topics / Aluminyl Anion

Academic literature on the topic 'Aluminyl Anion'

Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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Journal articles on the topic "Aluminyl Anion"

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Hicks, Jamie, Petra Vasko, Jose M. Goicoechea, and Simon Aldridge. "Synthesis, structure and reaction chemistry of a nucleophilic aluminyl anion." Nature 557, no. 7703 (April 16, 2018): 92–95. http://dx.doi.org/10.1038/s41586-018-0037-y.

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Hicks, Jamie, Petra Vasko, Jose M. Goicoechea, and Simon Aldridge. "Publisher Correction: Synthesis, structure and reaction chemistry of a nucleophilic aluminyl anion." Nature 560, no. 7717 (June 4, 2018): E24. http://dx.doi.org/10.1038/s41586-018-0168-1.

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Schwamm, Ryan J., Mathew D. Anker, Matthias Lein, and Martyn P. Coles. "Reduction vs. Addition: The Reaction of an Aluminyl Anion with 1,3,5,7‐Cyclooctatetraene." Angewandte Chemie International Edition 58, no. 5 (January 28, 2019): 1489–93. http://dx.doi.org/10.1002/anie.201811675.

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Kodama, Takuya. "Novel Development of Umpolung at Main Group Element: Synthesis, Structure and Reactivity of Nucleophilic Aluminyl Anion." Journal of Synthetic Organic Chemistry, Japan 77, no. 12 (December 1, 2019): 1247–49. http://dx.doi.org/10.5059/yukigoseikyokaishi.77.1247.

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Koshino, Kota, and Rei Kinjo. "Construction of σ-Aromatic AlB2 Ring via Borane Coupling with a Dicoordinate Cyclic (Alkyl)(Amino)Aluminyl Anion." Journal of the American Chemical Society 142, no. 19 (April 23, 2020): 9057–62. http://dx.doi.org/10.1021/jacs.0c03179.

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Evans, Matthew J., Mathew D. Anker, and Martyn P. Coles. "Oxidative Addition of Hydridic, Protic, and Nonpolar E–H Bonds (E = Si, P, N, or O) to an Aluminyl Anion." Inorganic Chemistry 60, no. 7 (March 16, 2021): 4772–78. http://dx.doi.org/10.1021/acs.inorgchem.0c03735.

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Brudzisz, Anna M., Damian Giziński, and Wojciech J. Stępniowski. "Incorporation of Ions into Nanostructured Anodic Oxides—Mechanism and Functionalities." Molecules 26, no. 21 (October 22, 2021): 6378. http://dx.doi.org/10.3390/molecules26216378.

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Anodic oxidation of metals leads to the formation of ordered nanoporous or nanotubular oxide layers that contribute to numerous existing and emerging applications. However, there are still numerous fundamental aspects of anodizing that have to be well understood and require deeper understanding. Anodization of metals is accompanied by the inevitable phenomenon of anion incorporation, which is discussed in detail in this review. Additionally, the influence of anion incorporation into anodic alumina and its impact on various properties is elaborated. The literature reports on the impact of the incorporated electrolyte anions on photoluminescence, galvanoluminescence and refractive index of anodic alumina are analyzed. Additionally, the influence of the type and amount of the incorporated anions on the chemical properties of anodic alumina, based on the literature data, was also shown to be important. The role of fluoride anions in d-electronic metal anodizing is shown to be important in the formation of nanostructured morphology. Additionally, the impact of incorporated anionic species, such as ruthenites, and their influence on anodic oxides formation, such as titania, reveals how the phenomenon of anion incorporation can be beneficial.

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Wang, Huali, Sichen Gu, Ying Bai, Shi Chen, Na Zhu, Chuan Wu, and Feng Wu. "Anion-effects on electrochemical properties of ionic liquid electrolytes for rechargeable aluminum batteries." Journal of Materials Chemistry A 3, no. 45 (2015): 22677–86. http://dx.doi.org/10.1039/c5ta06187c.

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Anion-effects are embodied in: (1) halogen anions resulting from different halogenated imidazole salt species, which is the critical factor for electrochemical windows; (2) aluminum chloride anions resulting from different AlCl₃/imidazole salt mole ratios, which is the determinant of electrochemical activities.

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TERASAKI, A., T. TSUKUDA, H. YASUMATSU, T. SUGAI, and T. KONDOW. "FRAGMENTATION OF ALUMINUM-CLUSTER ANIONS IN COLLISION WITH A SOLID SURFACE." Surface Review and Letters 03, no. 01 (February 1996): 591–95. http://dx.doi.org/10.1142/s0218625x96001066.

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Dynamical processes involved in the scattering of aluminum-cluster anions, [Formula: see text](4≤N≤25), from a silicon surface were investigated. The scattered anions observed were fragment cluster anions, [Formula: see text](n≤N). The recoil velocities of these fragment anions were evaluated by analyzing both the angular dependence of their intensity and the collision-energy dependence of their time-of-flight. The recoil energy of each fragment anion thus obtained suggests that the fragmentation process involves not only sequential evaporation of aluminum atoms but also fission into fragment clusters. Comparison of the present result with that of the collision-induced dissociation with a rare-gas atom indicates that the electron transfer between the cluster and the surface plays an important role.

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Iqbal, Muhammad Ahsan, Luyi Sun, Allyson T. Barrett, and Michele Fedel. "Layered Double Hydroxide Protective Films Developed on Aluminum and Aluminum Alloys: Synthetic Methods and Anti-Corrosion Mechanisms." Coatings 10, no. 4 (April 25, 2020): 428. http://dx.doi.org/10.3390/coatings10040428.

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This work reviews the characteristics of layered double hydroxides (LDHs) in the context of protective thin films to enhance the corrosion resistance properties of aluminum alloys. A discussion is made in detail about the LDH protection mechanism and the effect of synthesis approaches on LDH structural variations and the corresponding anti-corrosion behavior. LDHs anion-exchange behavior to host inorganic/organic anions makes them a potential material to investigate for anti-corrosion film. This unique advantage and the availability of a wide range of metal oxide-based layers, interlayer anions, and self-healing properties make LDH family an attractive choice for the development of compact LDHs based smart coating systems.

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Dissertations / Theses on the topic "Aluminyl Anion"

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Wiesner, Anja [Verfasser]. "Aluminum and Gallium Pentafluoroorthotellurates: Novel Superacids and Weakly Coordinating Anions / Anja Wiesner." Berlin : Freie Universität Berlin, 2019. http://d-nb.info/119958326X/34.

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Evdokimov, Anton [Verfasser]. "Numerical laser welding simulation of dissimilar Steel-Aluminum overlap joints / Anton Evdokimov." Düren : Shaker, 2020. http://d-nb.info/122416816X/34.

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El, Mouakibi Abderrahim. "Elaboration de particules submicroniques de taille et forme contrôlées d'hydroxyde d'aluminium." Université Louis Pasteur (Strasbourg) (1971-2008), 2008. http://www.theses.fr/2008STR13202.

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Powell, Christopher. "INDUCING ACTIVE SITES IN CLUSTERS: REACTIVITY OF Al13Ix- and Al14Iy- (x=0-2, y=2-4) WITH METHANOL." VCU Scholars Compass, 2011. http://scholarscompass.vcu.edu/etd/213.

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Size selective reactivity has been observed in pure aluminum cluster anions as a result of Lewis acid and base pairs. Using this a starting point, the goal of this study has been to explore how reactivity is affected with the addition of one or more ligand, which may induce active sites on the surface of the metal clusters. To study this, a theoretical investigation was undertaken on Al13Ix- and Al14Iy- (x=0-2, y=2-4) and their reactivity with methanol. The hypothesis was that iodine can induce a Lewis base site on the opposite side of the cluster, which may enhance reactivity. In results that are consistent with preliminary experimental data, it was found that the Al13Ix- series has a large energy barrier with respect to the cleavage of the O-H bond of methanol. The clusters of the series act as an extremely poor Lewis acids, and as a result, these clusters are relatively inert to methanol etching. On the other hand, the Al14Iy- series has a low barrier and is expected to react rapidly with methanol. The series is found to be most reactive at an aluminum adatom that is bound to an iodine due to the iodine extracting charge from the aluminum cluster creating a strong Lewis acid site.

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Négrier, Fabien. "Approche moléculaire de la préparation par imprégnation de catalyseurs NiOx/AI2O3 à partir de complexes [Ni(en)x(H2O)6-2x]X2 : rôle de l'amine chélatante et du contre-anion." Paris 6, 2002. http://www.theses.fr/2002PA066271.

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Song, Xiaowei, Matias R. Fagiani, Sandy Gewinner, Wieland Schöllkopf, Knut Roger Asmis, Florian A. Bischoff, Fabian Berger, and Joachim Sauer. "Gas phase structures and charge localization in small aluminum oxide anions: Infrared photodissociation spectroscopy and electronic structure calculations." AIP Publishing, 2016. https://ul.qucosa.de/id/qucosa%3A21256.

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We use cryogenic ion trap vibrational spectroscopy in combination with quantum chemical calculations to study the structure of mono- and dialuminum oxide anions. The infrared photodissociation spectra of D2-tagged AlO1-4 − and Al2O3-6 − are measured in the region from 400 to 1200 cm−1. Structures are assigned based on a comparison to simulated harmonic and anharmonic IR spectra derived from electronic structure calculations. The monoaluminum anions contain an even number of electrons and exhibit an electronic closed-shell ground state. The Al2O3-6 − anions are oxygen-centered radicals. As a result of a delicate balance between localization and delocalization of the unpaired electron, only the BHLYP functional is able to qualitatively describe the observed IR spectra of all species with the exception of AlO3 −. Terminal Al–O stretching modes are found between 1140 and 960 cm−1. Superoxo and peroxo stretching modes are found at higher (1120-1010 cm−1) and lower energies (850-570 cm−1), respectively. Four modes in-between 910 and 530 cm−1 represent the IR fingerprint of the common structural motif of dialuminum oxide anions, an asymmetric four-member Al–(O)2–Al ring.

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Nguyen, Cong Tung. "Etude des mécanismes d'oxydation des alliages FeCrAl à haute température (1100°C)." Clermont-Ferrand 2, 2009. http://www.theses.fr/2009CLF21941.

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Ce travail s'inscrit dans un cadre de recherches qui a pour objectif essentiel l'étude de l'effet des éléments réactifs sur l'oxydation à haute température (1373 K) d'alliages alumino-formaurs de type FeCrAl. Un alliage modèle, ne contenant pas d'éléments mineurs d'addition, a été utilisé pour cette étude. L'originalité de cette étude réside dans l'utilisation de la technique de revêtement sol-gel contenant le lanthane, le cérium ou l'yttrium. Les échantillons revêtus de sol-gel ont été recuits sous argon aux températures de 600, 800 et 1000°C. Les tests de cyclage thermiques montrent que les dépôts sol-gel de lanthane recuits à 1000°C et de cérium recuits à 600°C apportent une protection efficace à l'alliage. Le dépôt sol-gel d'yttrium n'a pas d'effet bénéfique sur le comportement à haute température même après recuit sous argon. L'analyse par la thermogravimétrie (ATG) montre que les recuits sous argon provoquent les prises de masse les plus importantes. Ceci est dû à l'augmentation de la diffusion anionique au stade initial de l'oxydation. L'utilisation de la DRX in situ nous permet de suivre l'évolution des réactions d'oxydation en identifiant les phases formées sur la surface des alliages. Après recuit ou exposition à 1100°C, le lanthane peut former des oxydes mixtes avec l'aluminium : LaAlO3 et LaAl11O18, le cérium ne forme aucun oxyde mixte avec les éléments d'alliages. L'yttrium est l'élément qui a l'affinité avec l'alumine la plus élevée. Pendant les recuits ou expositions à 1100°C, il peut former des oxydes mixtes avec l'aluminium : YAlO3 et Y3Al5O12. Les micro-observations montrent que la couche d'alumine développée sur l'alliage recouvert des dépôts sol-gel est généralement convolutée. Cette morphologie est le résultat de la formation des nouveaux oxydes dans la couche existante dû à un processus de diffusion mixte. Cette étude montre que les éléments réactifs lanthane, cérium et yttrium se localisent toujours à l'interface externe de la couche d'oxyde

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Lang, Christopher M. "Development of quaternary ammonium based electrolytes for rechargeable batteries and fuel cells." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-10262006-140639/.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2007.
Kohl, Paul, Committee Chair ; Bottomley, Lawrence, Committee Member ; Eckert, Charles, Committee Member ; Fuller, Tom, Committee Member ; Teja, Amyn, Committee Member.

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BENAISSA, MOHAMMED. "Etude par spectroscopie infrarouge des proprietes superficielles de l'alumine et des alumines sodees ou fluorees : acidite et basicite." Caen, 1985. http://www.theses.fr/1985CAEN2013.

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Etude des groupes superficiels de l'alumine et des cites d'adsorption. Etude de l'adsorption des alcools sur l'alumine degussa c, des sites d'adsorption et de l'acidite induite. Donnees, enfin, sur les alumines modifiees par des ions na+ ou f-

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Taylor, Kelly J. "Band evolution and shell structure in large clusters: Aluminum(3-60)anion, copper(1-1113)anion, silver(1-58)anion, and gold(1-223)anion." Thesis, 1990. http://hdl.handle.net/1911/16397.

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Photoelectron spectroscopy of negatively, charged clusters of aluminum, copper, silver, and gold reveals electronic shell structure and electron energy band development. Photodetachment experiments on Au$\sb6\sp-$ also suggests that an image-bound state of the anion exists at the detachment threshold. Al$\sb{\rm x}$, Cu$\sb{\rm x}$, Ag$\sb{\rm x}$, and Au$\sb{\rm x}$ all show closed shells in their electron affinities for clusters with x $<$ 21. The electron affinities of Au$\sb{\rm x}$ for 20 $<$ x $<$ 60 have three spherical shells at x = 20, 34, and 58, all of which are dramatically manifested in dips of 1.2, 0.65, and 0.75 eV when compared to their adjacent lower mass neighbors. The photoelectron spectra of Ag$\sb{\rm x}\sp-$, 30 $<$ x $<$ 58, have cleanly resolved peaks that are a result of level structure in the density-of-states and they are predicted by the Nilsson-Clemenger formalism of shell theory. Copper clusters in the same size range show similar behavior although not as pronounced. The onset of the 3d-band in copper is monotonically increasing with cluster size and at Cu$\sb{410}$ the band is only 0.6 eV from its bulk value. The monotonic increase is a result of the expanding sphere of charge that induces a dipole as the electron leaves the vicinity of the cluster. Sharp features in the 3d-band onset are very similar to bulk photoemission spectra and suggest that these structures are beginning to show crystalline character. The induced dipole also causes at least one weakly bound state to exist for Au$\sb6\sp-$ at the detachment threshold. Photodetachment spectroscopy shows a 30 cm$\sp{-1}$ phase shift between the 1- and 2-photon ejected electrons. The phase shift may be due to a sequence congestion of vibrational states between the ground and image-bound electronic states of Au$\sb6\sp-$.

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Book chapters on the topic "Aluminyl Anion"

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Harvey, Melanie J., and David A. Atwood. "Chelated Aluminum Anions." In ACS Symposium Series, 131–41. Washington, DC: American Chemical Society, 2002. http://dx.doi.org/10.1021/bk-2002-0822.ch009.

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Claridge, R. F. C. "14.7.2 Aluminum-centered anion radicals." In Landolt-Börnstein - Group II Molecules and Radicals, 224. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-45824-1_32.

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Zhang, G. Y., and T. R. Yu. "Coordination Adsorption of Anions." In Chemistry of Variable Charge Soils. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195097450.003.0009.

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In Chapter 4, when the electrostatic adsorption of anions by variable charge soils is discussed, another type of adsorption, specific adsorption, has already been mentioned, although it is not very remarkable for chloride ions and nitrate ions. For some other anions, specific adsorption can be very important. Specific adsorption is determined by the nature of the anions and is also related to the kind of functional groups on the surface of soils. In general, this type of adsorption is more pronounced in soils containing large amounts of iron and aluminum oxides. Therefore, specific adsorption of anions is one of the important characteristics of variable charge soils. Specific adsorption is a common term. For anions, the mechanism of specific adsorption is ligand exchange between these ions and some groups that have already been coordinately linked on the surface of soil particles. Therefore, the term coordination adsorption may be more appropriate than the term specific adsorption. For variable charge soils, phosphate is the strongest specifically adsorbed anion species. Phosphate adsorption is also the most intensively studied anion adsorption in soil science. However, the valence status of phosphate ions is apt to change with the change in environmental conditions. In the adsorption of phosphate by soils, in addition to ligand exchange, other mechanisms, such as chemical precipitation, may also be involved. Therefore, the phenomenon of phosphate adsorption is rather complex, and it is often difficult to make definitive interpretations of experimental results. In the present chapter, the coordination adsorption of anions will be discussed, mainly taking sulfate as the example, because sulfate is only secondary to phosphate in importance for agricultural production among anions capable of undergoing coordination adsorption. For the purpose of comparison, the adsorption of fluoride ions will also be mentioned. On the surface of soil particles there are functional groups such as hydroxyl groups (M-OH) and water molecules (M-OH2) that can participate in ligand exchange with anions. Al-OH, Fe-OH, Al-OH2, and Fe-OH2 groups on the surface of soil particles are the important sites for coordination adsorption of anions. Therefore, when a soil contains large amounts of iron and aluminum oxides, the phenomenon of coordination adsorption of anions will be more pronounced.

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Thomas, Fabien, and Armand Masion. "27Al NMR Study of the Hydrolysis and Condensation of Organically Complexed Aluminum." In Nuclear Magnetic Resonance Spectroscopy in Environment Chemistry. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195097511.003.0015.

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Aluminum is the most abundant metal of the Earth’s crust, of which it represents approximately 8%, ranking after oxygen and silicon. It exists mainly as oxides. In terrestrial environments, aluminum commonly exists as secondary (authigenic) hydroxide or aluminosilicate minerals, mainly clays. These minerals are highly insoluble at neutral pH. However, aluminum occurs in detectable amounts in natural waters, due to leaching of the soil minerals in acidic conditions. Soil acidity may have a natural origin, such as an acidic (silicic) mother rock, melted snow, dissolved carbonic acid, or biologically generated organic acids. During the past two decades, it has been demonstrated that one of the major origins of increased aluminum mobilization and transport in forested soils is introduction of strong acid through atmospheric sulfur and nitrogen deposition. It has also been shown that aqueous aluminum is the biogeochemical link between atmospheric pollution and damage caused to tree roots and aquatic organisms such as plankton, crustaceans, insects, and fish. Biological studies have shown that the different aluminum species exhibit various toxicities: the most toxic are the monomeric and the polynuclear species; complexation with organic acids results in low toxicity. The significance of aluminum to human health has long been regarded as negligible. There is a possible link between high-level aluminum contamination by renal dialysis or hemodialysis, and neurodegenerative health disorders such as Parkinson’s or Alzheimer’s diseases, but the part played by aluminum is not clear. However, since aluminum salts are used on an industrial level as coagulants and flocculants in water treatment, the aluminum concentration and speciation in drinking water deserve careful monitoring. Because of the specific toxicity of the aluminum species, there has been considerable concern in the past two decades over the speciation of aqueous aluminum present in soils and aquatic systems. To this end, several techniques have been developed in order to partition the aluminum species. The most common among them are chromatographic separation and categorization methods such as timed ferron reaction, and computational methods derived from thermodynamic equilibrium constants. However, significant discrepancies between the results have been noticed, and attributed to the dramatic interference of organic and inorganic anions in the Al fractionation.

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Eftekhari, Ali. "Review of Smart Ionic Liquids." In Fundamentals of Smart Materials, 222–32. The Royal Society of Chemistry, 2020. http://dx.doi.org/10.1039/bk9781782626459-00222.

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Chapter 18 reviews smart ionic liquids. Ionic solids such as sodium chloride (table salt) have been known for centuries. To eliminate the role of a solvent, particularly in the realm of electrochemistry, molten salts became of interest. The very first examples were the groundbreaking endeavors of Sir Humphry Davy in the synthesis of alkali metals by electrolysis, which he discovered (isolated to be precise) via this approach. However, this needs a high temperature as the ionic bonds are strong. The electrolysis of sodium chloride should be conducted at a temperature higher than 801 °C. Since high temperatures are not technologically favorable, the melting point of such ionic solids can be reduced by weakening the ionic bonds in eutectic mixtures. One of the very first examples is the pioneering work of Charles Martin Hall in the synthesis of aluminum, which is still the dominant approach for the exploitation of metallic aluminum. The high melting point of these ionic liquids is due to the close arrangement of highly charged ions within the lattice. For instance, the sodium and chlorine are small atoms, which are closely located in a cubic lattice structure. Therefore, high energy is required to separate the anion and cation.

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Zhang, X. N., and A. Z. Zhao. "Surface Charge." In Chemistry of Variable Charge Soils. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780195097450.003.0005.

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The surface of soil colloids carries electric charges, and these surface charges are the basic cause for soil to possess a series of surface properties. Soil surface charges affect the chemical properties of the soil through varying the quantity of electric charge and the surface charge density. For example, adsorptions of cations and anions are caused by negative and positive surface charges of the soil, respectively. The amount of ions adsorbed is determined by the quantity of surface charge, whereas the tightness of adsorption is related to charge density. In addition, the migration of ions in soil, the formation of organo-mineral complexes,and the dispersion, flocculation, swelling, and shrinkage are all affected by surface charge properties of the soil. Therefore, surface charge properties have an important bearing on soil structure and plant nutrition. Variable charge soils are characterized by the high content of iron and aluminum oxides. The clay mineralogical composition is dominated by 1:1-type minerals, such as kaolinite. These two factors make the surface charge properties of variable charge soils distinctly different from those of constant charge soils of temperate regions which chiefly containin 2:1-type clay minerals. However, unlike the case for pure variable charge minerals, in variable charge soils there is generally the presence of a certain amount of 2:1-type clay minerals. Therefore, as a mixture of variable charge minerals and constant charge minerals, the surface charge properties of variable charge soils is more complicated. In this chapter, the origin and factors affecting surface charges of the soil as well as the relationship between these charges and soil type will be discussed. Despite the complexity in composition, a soil may be regarded as a mixed system consisting of constant charge surface materials and constant potential surface materials in different ratios (Anderson and Sposito, 1992; Gillman and Uehara, 1980). Examples of the former type such as montmorillonite and vermiculite carry permanent negative charges, while those of the latter type such as iron oxide and aluminum oxide carry variable charges. Commonly found constant charge clay minerals in soils include those layer silicates such as hydrous mica, vermiculite, montmorillonite, and chlorite.

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Sposito, Garrison. "Soil Minerals." In The Chemistry of Soils. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190630881.003.0006.

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The chemical elements in soil minerals occur typically as charged species arranged in spatial configurations held together by ionic bonds. Ionic bonds involve atoms that retain their unique “electron clouds” and, therefore, they are weaker than covalent bonds, which involve significant mixing of the electron clouds of the bonding atoms, leading to the electron sharing that makes covalent bonds stronger. However, ionic and covalent bonds are idealizations that real chemical bonds only approximate. A real chemical bond shows some degree of ionic character, which maintains the electronic identity of the bonding partners, and some degree of electron sharing, which blurs their electronic identity. The Si—O bond, for example, is said to be an even partition between ionic and covalent character, and the Al—O bond is thought to be about 40% covalent and 60% ionic. Aluminum, however, is exceptional. Almost all the metal–oxygen bonds that occur in soil minerals are ionic. For example, Mg—O and Ca—O bonds are considered to be 75% to 80% ionic whereas Na—O and K—O bonds are 80% to 85% ionic. Covalence thus plays a minor role in determining the atomic structures of soil minerals, aside from the important feature that Si—O bonds, being 50% covalent, impart mineral resistance to weathering, as discussed in Section 1.3. Given this perspective on bonding, the two most important properties of the chemical elements in soil minerals should be their ionic valence and radius. Valence is the ratio of the electric charge on an ionic species to the charge on the proton. Ionic radius is a less direct concept, because the radius of a single ion cannot be measured. Accordingly, ionic radius is a defined quantity based on the following three assumptions: (1) the radius of the bivalent oxygen ion (O2-)in all minerals is 0.140 nm, (2) the sum of radii of the cation and anion participating in a chemical bond equals the measured interatomic distance between the two, and (3) the ionic radius has the same value in all mineral structures containing an ion with a given coordination number (CN).

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McCormick, A. V., A. T. Bell, and C. J. Radke. "Application of 29Si and 27Al NMR to Determine the Distribution of Anions in Sodium Silicate and Sodium Alumino-Silicate Solutions." In Studies in Surface Science and Catalysis, 247–54. Elsevier, 1986. http://dx.doi.org/10.1016/s0167-2991(09)60880-6.

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Olah, George A., Philip W. Westerman, Y. K. Mo, and Gilles Klopman. "Electrophilic Reactions at Single Bonds. VII: Hydrogen–Deuterium Exchange Accompanying Protolysis (Deuterolysis) of the Borohydride and Aluminum Hydride Anions with Anhydrous Strong Acids. The Intermediacy of Pentahydroboron (BH5) and Pentahydroaluminum (AlH5) and Their Structural Relationship with the Methonium Ion (CH5+)." In World Scientific Series in 20th Century Chemistry, 799–802. World Scientific Publishing Company, 2003. http://dx.doi.org/10.1142/9789812791405_0150.

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"PAA adsorption on aluminum oxide was found to decrease with an increase in pH (Figure 2). The adsorption is ligand-like and is identical with that noted by other investigators [10,11]. The adsorption shows a monotonie decline with increasing pH. A maximum of 90% adsorption was obtained at the lowest pH value. Similar adsorption curves were obtained in the adsorption of humic and fulvic acids on alumina [5]. The ligand exchange refers specifically to direct bond formation between a carboxylate group and a metal ion center of the surface (Al(III) this case). The adsorption trend observed in ligand-like adsorption results from competition for H+ by anions and the mineral surface and is characterized by the mineral pHzpc and the pKa of the sorbate [3]. PAA has an average pKa of 4.5 [11]. The surface sites of an aluminum oxide particle are protonated and positively charged at a pH value below the pHzpc (8.9 for the aluminum oxide used in this study; they are deprotonated and negatively charged at pH values higher than pHzpc. At lower pH PAA is negatively charged and therefore will be adsorbed strongly on the more energetic available positive A120 3 sites. With increasing pH, as the sites become negative, the PAA percentage adsorption decreases. The second step in this study is to analyze the Cd adsorption on A120 3 in the presence of PAA. The presence of a complexing ligand can enhance or decrease the extent of metal adsorption on oxides. The functionality and adsorptive properties of the ligand determine its effect on metal uptake. In the system containing both Cd(II) and PAA, the surface (aluminum oxide) and the ligand (PAA) compete for the metal ions. The differences in the adsorption of Cd(II) on aluminum oxide in the presence of PAA can be explained by." In Hazardous and Industrial Waste Proceedings, 30th Mid-Atlantic Conference, 741. CRC Press, 2014. http://dx.doi.org/10.1201/9781498709453-114.

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Conference papers on the topic "Aluminyl Anion"

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Ananchenko, D. V., G. R. Ramazanova, S. V. Nikiforov, and S. F. Konev. "ESR of anion-deficient alumina single crystal after UV irradiation." In PHYSICS, TECHNOLOGIES AND INNOVATION (PTI-2019): Proceedings of the VI International Young Researchers’ Conference. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5134396.

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Reed, Amanda, Michael Heaven, Adrian Gardner, and Kyle Mascaritolo. "ELECTRONIC AUTODETACHMENT SPECTROSCOPY AND IMAGING OF THE ALUMINUM MONOXIDE ANION, ALO-." In 70th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.fa04.

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Ananchenko, D. V., V. S. Kortov, S. F. Konev, and V. G. Mazurenko. "Luminescent and Dosimetric Properties of Ultrafine Alumina Ceramics with Anion Defects." In 3rd Annual International Conference on Advanced Material Engineering (AME 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/ame-17.2017.23.

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Kortov, V. S., D. V. Ananchenko, and S. F. Konev. "Effect of annealing on EPR of irradiated anion-defective alumina single crystal." In 3RD ELECTRONIC AND GREEN MATERIALS INTERNATIONAL CONFERENCE 2017 (EGM 2017). Author(s), 2017. http://dx.doi.org/10.1063/1.5002924.

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Hudson, C. Monica. "Intercalation of Layered Double Hydroxide Polymer Nanocomposites." In ASME 2002 Engineering Technology Conference on Energy. ASMEDC, 2002. http://dx.doi.org/10.1115/etce2002/trib-29096.

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Magnesium-aluminum (Mg-Al) based layered double hydroxide (LDH) polymer nanocomposites were developed through the implementation of a rehydration technique. Organic anionic surfactant sodium dodecyl sulfate (SDS) and an anionic polymer, poly(styrene sulfonate) (PSS) were used for intercalation in the cationic intergallery spacing of LDH. This rehydration technique was performed by calcination of the LDH precursor for removal of carbonate anion followed by rehydration of organic anionic phase in a nitrogen rich atmosphere. The resulting nanocomposites were characterized by Fourier Transform Infrared Spectroscopy (FTIR) and powder x-ray diffraction (XRD).

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Xiaofu, Hu, Tang Zhe, Liu Yunqi, and Liu Chenguang. "Effect of Anions during a Solid-state Reaction Preparation of Ammonium Aluminum Carbonate Hydroxide." In 1st International Conference on Mechanical Engineering and Material Science). Paris, France: Atlantis Press, 2012. http://dx.doi.org/10.2991/mems.2012.144.

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Iordache, Ovidiu, Elena Cornelia Mitran, Irina Sandulache, Maria Memecica, Lucia Oana Secareanu, Cristina Lite, and Elena Perdum. "An overview on far-infrared functional textile materials." In The 8th International Conference on Advanced Materials and Systems. INCDTP - Leather and Footwear Research Institute (ICPI), Bucharest, Romania, 2020. http://dx.doi.org/10.24264/icams-2020.i.9.

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The present study was aimed at highlighting the applicability of novel generations of functional textile materials based on incorporation of safe, pyroelectric nanoparticles into fibers. The synthetic fibers with negative ions emitting properties contain semiprecious stone particles (tourmaline, monazite, opal), ceramic, charcoal, zirconium powders, aluminum titanate and mixtures of such minerals. Currently, the synthetic fibers generating pyroelectric effects are obtained by introducing minerals (e.g. superfine tourmaline powder) into melted polymers before spinning or by dispersing the minerals into the spinning solution. As polymers, polyethylene terephthalate, polyvinyl acetate, polyamide and viscose have been used. In low quantities, these minerals have almost no effect on human health. Included in large quantities, they tend to be too expensive (tourmaline, opal) and the fibers become harsh and fragile. The current generation of FIR functional textile materials faces a series of technical challenges: some of the of the used compounds are radioactive (monazite); if the particles size is too large (0.2-0.3µm), it may result in the production of highly non-uniform fibers and early wear of the mechanical parts producing installation; most of commercial pyroelectric fabrics emit a low amount of negative ions (500-2600 anions/cc) and FI rays, inducing a low health effect. Clinical studies involving exposure to pyroelectric compounds have highlighted positive effects on: blood circulation, skin cell re-vitalizing, collagen and elastin production, sleep modulation, wounds healing and acceleration of micro-circulation, chronic pain management, improvement of vascular endothelial functions, atherosclerosis and arthritis affections etc.

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Nara, Matsunori. "Invention Using a Liposome of a Bio-Micromachine." In ASME 4th Integrated Nanosystems Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/nano2005-87031.

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It is thought that a minus hydrogen ion is useful to the apotosis of a mitochondria and prevention of a necrosis, or prevention of the illness resulting from the oxygen radical in a human body. So, in this research, examination about the possibility and its practical use method of production of the hydrogen ion by which it was minus electrified was performed. First, the lipid bilayer as a medicine transporter of DDS (Drug Delivery System) was produced using the supercritical fluid. Next, experimental examination was performed for the purpose of enclosing the substance for hydrogen ion generating, and the substance for electronic accumulation with the inside of a lipid bilayer. Furthermore, fundamental examination was performed in order to use the enclosed minus hydrogen ion. In order to check what the electron of oxygen ion was taken into the hydrogen ion, and the minus hydrogen ion generated, electrical conductivity measurement was performed. By mixing and heating, 12CaO · 7Al2O3 and metal calcium, the electron was accumulated in the inside of the reaction object of 12CaO7Al2O3. The check of accumulation of the electron (anion) inside a reaction object was judged by measurement of the electrical conductivity before and behind processing. That is, when the electron was accumulated, I thought that the electrical conductivity of a reaction object increased. Moreover, this reaction object was used as an electronic transporter. In the range of the temperature set up in the liposome production experiment, and pressure, it could not say that the influence temperature and pressure affect the determination of the particle diameter of a liposome was large, but average particle diameter was about 10 micrometers. The following conclusions were obtained as a result of conducting a fundamental experiment for the purpose of production of a medicine which made the minus hydrogen ion include inside a lipid bilayer (liposome), and a confirmation of the validity as DDS in the living body. (1) The liposome suitable for DDS was able to be obtained. (2) By using metal magnesium and metal calcium, the minus hydrogen ion was able to be accumulated in the reaction inside of the body of alumina cement.

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Reports on the topic "Aluminyl Anion"

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Marsh, S. F. The effect of fluoride and aluminum on the anion exchange of plutonium from nitric acid. Office of Scientific and Technical Information (OSTI), July 1987. http://dx.doi.org/10.2172/6339294.

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Hawthorne, M. Frederick, Satish S. Jalisatgi, Alexander V. Safronov, Han Beak Lee, and Jianguo Wu. Chemical Hydrogen Storage Using Polyhedral Borane Anions and Aluminum-Ammonia-Borane Complexes. Office of Scientific and Technical Information (OSTI), October 2010. http://dx.doi.org/10.2172/990217.

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