Transition-Metal Oxides Research Papers - Academia.edu (original) (raw)

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- by and +1
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- Physics, Transition-Metal Oxides, Physical sciences, Magnetic Susceptibility
- by Melanie David
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- Materials Science, Chemistry, Transition-Metal Oxides, Process Design

Swelling mica exhibits unique characteristics for purification of drinking water contaminated by heavy metals and for selective removal of Sr2+ and Ba2+ ions from nuclear waste solution. As a new approach to recycle fly ash, conversion of fly ash to swelling mica has been attempted and ion-exchange properties of fly ash-derived swelling mica (referred to hereinafter as FA-swelling mica) were

- by Sridhar Komarneni
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- Materials Engineering, Chemistry, Porous Materials, Transition-Metal Oxides
- by frank davis
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- Engineering, Ionic Liquid, Cyclic Voltammetry, Transition-Metal Oxides
- by Elvio Antonio Campos and +1
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- Analytical Chemistry, Transition-Metal Oxides, Copper, Silica
- by Barbara Onida
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- Engineering, Technology, Chromatography, Ion Chromatography
- by Hanaa El-Desoky
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- Cyclic Voltammetry, Transition-Metal Oxides, Metal Complexes, CHEMICAL SCIENCES

The synthesis and characterization of some new terphenyl ligands, modified by meta alkyl substitution on the central ring are described. The new ligands were designed for potential applications in the stabilization of novel low valent main group species or transition metal heteronuclear multiply bonded compounds. Compounds 1-I-C6H1-2,6-Ph2-3,5-Pr2i (1), 1-I-C6H1-2,6-Mes2-3,5-Pr2i (3) (Mes=2,4,6-trimethylphenyl), 1-I-C6H1-2,6-Trip2-3,5-Pr2i (5) (Trip=2,4,6-triisopropylphenyl) and 1-I-C6H1-2,6-Dipp2-3,5-Pr2i (6) (Dipp=2,6-diisopropylphenyl) were obtained

- by James Fettinger
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- Inorganic Chemistry, Organic Chemistry, Organometallic Chemistry, NMR Spectroscopy
- by Nikolas Kaltsoyannis
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- Chemical Engineering, Inorganic Chemistry, X ray absorption spectroscopy, Inorganic
- by Weiguo Yin and +1
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- Functional Analysis, Transition-Metal Oxides, Band Structure, Physical sciences
- by Oleg Dimitriev and +1
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- Materials Engineering, Condensed Matter Physics, Kinetics, Transition-Metal Oxides
- by Hans-Christoph Mertins
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- Synchrotron Radiation, Transition-Metal Oxides, Room Temperature, Magnetic Circular Dichroism
- by Joaquin Brito
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- Engineering, Carbon, Transition-Metal Oxides, Silica
- by J. Morillo
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- Transition-Metal Oxides, Transition metal oxides
- by Jianli Yu
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- Environmental Engineering, Chemical Engineering, Catalysis, Kinetics
- by Vincenzo Massarotti
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- Engineering, Soft Matter, Self Assembly, Nanoparticles
- by Mohammed Enamullah
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- Transition-Metal Oxides, CHEMICAL SCIENCES, Room Temperature, Metal ion
- by C. Batista and +1
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- Materials Engineering, Condensed Matter Physics, Thermodynamics, Water Purification
- by Elisabetta Damiani
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- Free Radicals, Oxidative Stress, DNA damage, Recombinant DNA Technology
- by Michael Ruck
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- Inorganic Chemistry, Transition-Metal Oxides
- by Marcin Brynda
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- Inorganic Chemistry, Organic Chemistry, Organometallic Chemistry, NMR Spectroscopy
- by Fabio Bellina
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- Organic Chemistry, Transition-Metal Oxides, Natural Product, Tetrahedron
- by G. Sauthoff
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- Materials Engineering, Intermetallics, Transition-Metal Oxides, Phase Field
- by Jose Varela and +2
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- Engineering, Materials Science, Microstructure, Manufacturing
- by Rolf Mülhaupt
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- Engineering, Transition-Metal Oxides, CHEMICAL SCIENCES
- by Nikolay N Gerasimchuk
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- Inorganic Chemistry, Coordination Chemistry, Polymorphism, Cyclic Voltammetry
- by Prof. Mosaad Abdel-Wahhab
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- Materials Engineering, Kinetics, Nuclear Materials, Nuclear
- by Antonysamy Kulandaisamy
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- Inorganic Chemistry, Transition-Metal Oxides, Copper, Escherichia coli
- by Renata Bilewicz and +4
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- Inorganic Chemistry, Transition-Metal Oxides, Copper, Nickel
- by Aldaléa Lopes Brandes Marques
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- Engineering, Proton Exchange Membrane, Heat Treatment, Fuel Cell
- by J.L. Tallon
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- Transition-Metal Oxides, Magnetism, Mathematical Sciences, Physical sciences
- by Lev Zakharov
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- Inorganic Chemistry, Organic Chemistry, Organometallic Chemistry, Crystal structure
- by Carlo Mealli
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- Inorganic Chemistry, Kinetics, Transition-Metal Oxides, X Rays
- by Asghari Maqsood
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- Engineering, Materials Science, Transition-Metal Oxides, CHEMICAL SCIENCES
- by oguz Cakir
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- Carbon Nanotube, Nanowires, Ab initio Molecular Dynamics, Transition-Metal Oxides

The synthesis and characterization of some dioxouranium(VI) complexes containing potential ONS donor ligands derived from benzoyl,o-chloro-,o-methyl-,P-chloro-,p-nitro-,p-methoxy-,p-aminobenzoylhydrazines and isonicotinylhydrazine with phenyl isothiocyanate are reported. Two types of complexes with general formulae [UO2(HL)2(X)2] and [[UO2(HL)2] have been identified and characterized. All the uranyl complexes are of the [UO2(HL)2(X)2] type (HL=bidentate monoanionic ligand, X=H2O and/or EtOH) and X bridges the uranyl ion and the thioketo groupvia hydrogen bonding. Upon heating to 140 °C, the complexes lose X giving a new complex of formula [UO2(HL)2] (HL=tridentate monoanionic ligand) in which the thioketo-group participates in bonding. The latter complexes take up X again on exposure to water and/or ethanol vapour.

- by vivek srivastava
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- Chemical Engineering, Comparative Study, Transition-Metal Oxides, Ligands
- by Snezana Miulovic and +2
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- Engineering, Impedance Spectroscopy, Transition-Metal Oxides, Hydrogen Energy
- by Paolo Pastore
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- Analytical Chemistry, Ion Chromatography, Transition-Metal Oxides, Copper
- by G. Peto
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- Chemical Engineering, Transition-Metal Oxides, Electronic Structure

Exposure of superalloy surfaces to jet fuel at elevated temperatures leads to the formation of carbonaceous deposits and metal sulfides. The formation of stable oxide layers on alloy surfaces can reduce the activity of the constituent transition metals that catalyze the dehydrogenation of hydrocarbons and the subsequent carbon deposit growth. The metals Ni, Cr, Fe, Mn, Al, Ti and Nb + Ta

- by Semih Eser
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- Thermodynamics, Oxidation of Metals, Transition-Metal Oxides, Thermal Stress

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full... more

- by Jose Morillo
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- Transition-Metal Oxides, Transition metal oxides

RESUMEN El óxido y el hidróxido del escandio son compuestos de escaso interés desde el punto de vista de las enseñanzas medias. El Sc (III) no posee electrones d, por lo que sus compuestos son de color blanco,algo decepcionante si lo comparamos con los del resto de los derivados de los metales de transición A pesar de ello, veremos cómo podemos encontrar algunas reacciones de atractivo académico para el alumnado, como el carácter anfótero de los compuestos o la particular estructura gelatinosa del hidróxido. Palabras clave: Óxido de escandio; Hidróxido de escandio. ABSTRACT Scandium oxide and hydroxide are not interesting compounds regarding middle school views. Sc (III) is the only ion, and it hasn't d-electrons, so its compounds are white, a disappointing fact if compared with any of the transition metals ones. Instead of this, we'll show that scandium oxide and hydroxide present some reactions of pedagogic significance, such as the amphoteric character or the gelatinous structure of the hydroxide.

- by Daniel Martínez Troya
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- Chemistry, Inorganic Chemistry, Transition-Metal Oxides, Química
- by Ekkehard Diemann
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- Bioinorganic Chemistry, Transition-Metal Oxides, Edition, CHEMICAL SCIENCES
- by Michael Rubin
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- Transition-Metal Oxides, CHEMICAL SCIENCES

Sodium borate glasses containing iron and molybdenum ions with the total concentration of transition ions constant and gradual substitution of sodium oxide (network modifier) by borate oxide (network former) was prepared. Densities, molar volume, DC and AC conductivities are measured. The trends of these properties are attributed to changes in the glass network structure. Their DC and AC conductivity increased with increasing NaO concentration. The increase of AC conductivity of sodium borate glasses is attributed to the chemical composition and the hopping mechanism of conduction. Measurements of the dielectric constant (ε) and dielectric loss (tan δ) as a function of frequency (50 Hz–100 kHz) and temperature (RT—600 K) indicate that the increase in dielectric constant and loss (ε and tan δ) values with increasing sodium ion content could be attributed to the assumption that Fe and Mo ions tend to assume network-forming position in the glass compositions studied.The variation of the value of frequency exponent s for all glass samples as the function of temperature at a definite frequency indicates that the value of s decreases with increasing the temperature which agrees with the correlated barrier-hopping (CBH) model.

- by Aisha Soliman
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- Condensed Matter Physics, Quantum Physics, Transition-Metal Oxides, Iron
- by Jih-mirn Jehng
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- Engineering, Raman Spectroscopy, Transition-Metal Oxides, Physical sciences