Oxides vanadium oxide

Secondary Niobium Oxide-Vanadium Oxide Batteries... 

Table 16. Specifications of secondary niobium oxide-vanadium oxide batteries...

Thermal decomposition—Thermal decomposition methods may be used to prepare metal oxide fumes. An aerosol of a precursor to the metal oxide (i.e., a substance that is readily decomposed, thermally, to yield the oxide) is first generated and then is heated by passing it through a heated tube to decompose it to the oxide. Metal formates, oxalates, and the like, which readily yield the oxides and do not produce objectionable side products, are commonly used precursors. In this program, fumes of iron oxide, vanadium oxide, and copper oxide were generated using this method. 

V205 Oxides. - Vanadium oxide species (VO ) are well known active com-... 

Controlled vapor-phase oxidation of alkylthiazoles in the presence of molybdenum oxide, vanadium oxide or tin vanadate at temperatures of 250 to 400 °C affords the corresponding formyl derivative in moderate yields. 

Wang et al. (18) have studied binary and ternary mixtures of titanium oxide with zirconium oxide, vanadium oxide and iron oxide, among others. They reported that the by-products are produced in small amounts. Some mixtures are as active or more active than the iron oxide catalyst but are less selective. These researchers noted that in addition to the aforementioned reactions, reactions 3 to 5, the following reactions are significant ... 

SYNS VANADIC OXIDE VANADIUM OXIDE VANADIUM TRIOXIDE... 

Catalysts for the oxidation of volatile organic compounds (VOC) are generally supported platinum or palladium catalysts. Copper oxide, vanadium oxide and chromium oxide are suitable for the oxidation of halogenated compounds. 

A review of First Principles simulation of oxide surhices is presented, focussing on the interplay between atomic-scale structure and reactivity. Practical aspects of the First Principles method are outlined choice of functional, role of pseudopotential, size of basis, estimation of bulk and surface energies and inclusion of the chemical potential of an ambient. The suitability of various surface models is discussed in terms of planarity, polarity, lateral reconstruction and vertical thickness. These density functional calculations can aid in the interpretation of STM images, as the simulated images for the rutile (110) surface illustrate. Non-stoichiometric reconstructions of this titanium oxide surface are discussed, as well as those of ruthenium oxide, vanadium oxide, silver oxide and alumina (corundum). This demonstrates the link between structure and reactivity in vacuum versus an oxygen-rich atmosphere. This link is also evident for interaction with water, where a survey of relevant ab initio computational work on the reactivity of oxide surfaces is presented. 

Synonyms Vanadic oxide Vanadium oxide Vanadium sesquioxide... 

Molybdenum oxide Vanadium oxide Zinc oxide Chromium oxide Tin oxide Calcium carbonate Mullite Kaolin (edge) Apatite... 

Much work has been devoted to the reduction of smoke production from burning PVC. A large variety of compounds have been patented as smoke suppressors both for rigid and plasticized PVC, for example ferrocene, iron oxides, alumina trihydrate, molybdenum oxide, vanadium oxide, copper cyanide and thiocyanide. 

This observation led Murakami and coworkers to develop a new method to measure the concentration of V=0 species on oxidized vanadium oxide-based catalysts [10,11]. The method known as rectangular pulse technique involves the reaction of NO and NH3 with surface V=0 species to produce molecular nitrogen according to the following stoichiometric reaction ... 

Miyamoto, A., Hattori, A., and Murakami, Y. The concentration of V=0 species on oxidized vanadium oxide catalysts. J. Solid State Chem. 1983, 47, 373-375. 

Catalogue of Secondary Niobium Oxide-Vanadium Oxide Batteries, Matsushita Battery Industrial Co., Ltd. Koshba, N., Takata, K., Nakanishi, M., Asaka, E., and Takahara, Z. (1994)... 

The metal oxides used to make positive electrode materials for lithium-ion batteries commonly include lithium cobalt oxide, lithium nickel oxide, lithium manganese oxide, vanadium oxide, and various others, such as iron oxides. Positive electrode materials of 5 V and polyanion-type positive electrode materials (so far mainly referring to lithium iron phosphate, LiFeP04) have also been investigated. Among the primary materials for these positive electrode materials, cobalt is the most expensive, followed by nickel and then manganese and vanadium. As a result, the prices of positive electrode materials are basically in line with the market prices of the primary materials. The structures of these positive electrode materials are mainly layered, spinel, and oliven. 

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