Results 201 to 210 of about 13,485 (259)

Vanadium Oxide Clusters

, 2002
Urban, J., Melzer, M., Sack-Kongehl, H., Weiss, K.   +3 more
openaire   +1 more source

Vanadium Oxide Foams:  An Insight into the Structure of the Vanadium Oxide Walls

Chemistry of Materials, 2005
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Durupthy, Olivier, Jaber, Maguy, Steunou, Nathalie, Maquet, Jocelyne, Chandrappa, G., Livage, Jacques   +5 more
openaire   +3 more sources

Vanadium oxide surfaces and supported vanadium oxide nanoparticles

Topics in Catalysis, 2006
The information obtained from the characterization of vanadium oxide single crystal surfaces is related to the study of vanadia nanoparticles supported on silica and alumina thin films, model systems for the so-called “supported monolayer vanadia catalysts”.
Guimond, S., Abu Haija, M., Kaya, S., Lu, J., Weissenrieder, J., Shaikhutdinov, S., Kuhlenbeck, H., Freund, H., Döbler, J., Sauer, J.   +9 more
openaire   +2 more sources

Anodic oxidation of vanadium and properties of vanadium oxide films

Journal of Physics: Condensed Matter, 2004
Thin films of amorphous vanadium oxide have been prepared by electrochemical anodic oxidation. The phase composition of anodic films on vanadium has been shown to depend on the oxidation conditions (electrolyte composition, oxidation current, and time), and the stoichiometry can be controlled from V O2 to V2O5.
G B Stefanovich, A L Pergament, A A Velichko, L A Stefanovich   +3 more
openaire   +1 more source

XPS studies of vanadium and vanadium oxides

Journal of Electron Spectroscopy and Related Phenomena, 1983
Abstract XPS (ESCA) measurements are presented of the X-ray-induced photoelectron lines and Auger transitions of metallic vanadium and of two vanadium oxides. The oxidation states of vanadium are compared and discussed for vanadium in the maximal valence state, with a 3 d 0 electron configuration, and in the state with a 3 d 1 electron ...
J. Kasperkiewicz, J.A. Kovacich, D. Lichtman   +2 more
openaire   +1 more source

The oxidation of NADH by tetravalent vanadium

Archives of Biochemistry and Biophysics, 1987
Vanadyl (V(IV)) salts autoxidize in neutral aqueous solution yielding O2- plus vanadate (V(V)) and these, in turn, cause the oxidation of NADH, by a free radical chain reaction. This oxidation of NADH was inhibited by superoxide dismutase, but not by a scavenger of HO..
S, Liochev, I, Fridovich
openaire   +2 more sources

Biocatalytic and biomimetic oxidations with vanadium

Journal of Inorganic Biochemistry, 2000
Approaches to the rational design of vanadium-based semi-synthetic enzymes and biomimetic models as catalysts for enantioselective oxidations are reviewed. Incorporation of vanadate ion into the active site of phytase (E.C. 3.1.3.8), which in vivo mediates the hydrolysis of phosphate esters, afforded a semi-synthetic peroxidase.
F, van de Velde, I W, Arends, R A, Sheldon   +2 more
openaire   +2 more sources

Role of Oxidation State of Vanadium in Vanadium Oxide-Hematite Nanoparticles

MRS Proceedings, 2013
ABSTRACTSingle phase, a FeVO4 triclinic crystalline structure was successfully synthesized by annealing the mechanochemically milled xV2O5·(1-x)α-Fe2O3 composites (x = 0.5) at 550 °C for 1 h. X-ray powder diffraction (XRD) and Mössbauer spectroscopy were combined for a detailed study of the assisting role of the mechanochemical milling process ...
Monica Sorescu, Tianhong Xu, Collin Wade
openaire   +1 more source

Diesel soot oxidation over supported vanadium oxide and K-promoted vanadium oxide catalysts

Applied Catalysis B: Environmental, 2005
Abstract Several systems of vanadium oxide and K-promoted vanadium oxide catalysts which supported on different carries with the variations of V contents and K contents were prepared by incipient-wetness impregnation method. Their catalytic performances for diesel soot catalytic oxidation were investigated with temperature-programmed oxidation ...
Aijun Duan, Xuezhong Wang
exaly   +2 more sources

Oxidative dehydrogenation of ethane on vanadium-molybdenum oxide and vanadium-niobium-molybdenum oxide catalysts

Applied Catalysis, 1991
Abstract The oxidative dehydrogenation of ethane has been investigated on a range of mixed Mo/V/Nb oxide catalysts. A maximum in activity was observed for Mo/V oxide catalysts at ca. 70% Mo. Addition of niobium oxide to this mixed oxide resulted in a more active and selective catalyst.
R. Burch*, R. Swarnakar
openaire   +1 more source