منابع مشابه
Vanadium Oxide Monolayer Catalysts I. Preparation, Characterization, and Thermal Stability
Vanadiumoxid Monoschichtkatalysatoren. I. Darstellung, Charakterisierung und thermische Stabilitiit Inha l t s i ibers ich t . Durch Chemisorption von Vana,dat(V)-Anionen aus waBrigen Losungen, bzw. Cheniisorption von gasformigem V,O,(OH), warden Va.nadinoxidkatalysatoren des Monoschichttyps dargestellt. Mit A1,0,, Cr,O,, TiO,, CeO, nnd ZrOz als Trageroxiden, konnen Katalysatoren mit, einer ung...
متن کاملCatalysis science of supported vanadium oxide catalysts.
Supported vanadium oxide catalysts contain a vanadium oxide phase deposited on a high surface area oxide support (e.g., Al2O3, SiO2, TiO2, etc.) and have found extensive applications as oxidation catalysts in the chemical, petroleum and environmental industries. This review of supported vanadium oxide catalysts focuses on the fundamental aspects of this novel class of catalytic materials (molec...
متن کاملCatalytic Oxidation of 4-Methylpyridine on Modified Vanadium Oxide Catalysts
The reaction of gas-phase oxidation of 4-methylpyridine on individual V2O5, binary and ternary vanadium-oxide catalysts was studied. These catalysts were modified by additives of SnO2 and TiO2. It was found that modifying V2O5 leads to increase the activity of binary contacts. Upon transition from binary V2O5<...
متن کاملSynthesis and Characterization of Ni-Doped Vanadium Phosphorus Oxide Catalysts
The effect of Ni doping (1%, 2%, and 5%) on vanadium phosphate catalysts prepared via VOPO4·2H2O was described and discussed. At low levels, the Ni dopant significantly enhanced the amount of the active lattice oxygen species O− and lowered the reduction peak temperature corresponding to the reduction of V5+ and V4+ phases. A combination of powder X-ray diffraction, temperature-programmed reduc...
متن کاملHydrogenation of carbon monoxide over vanadium oxide- promoted rhodium catalysts
The effect of vanadium oxide as support and promoter on supported rhodium catalysts on the CO hydrogenation has been investigated at 0.15 and 4.0 MPa. Rh/V,O, reduced at 723 K has a good selectivity toward oxygenated products, especially C,-oxygenates, but has a low activity added as a promoter to catalysts consisting and stability. Vanadium oxide of rhodium supported on silica and alumina show...
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ژورنال
عنوان ژورنال: Zeitschrift für Physikalische Chemie
سال: 1978
ISSN: 2196-7156,0942-9352
DOI: 10.1524/zpch.1978.111.2.215