Preparation of V sub(2)O5/NiO Catalysts by Solid Phase Ball Milling for Oxidative Dehydrogenation of Propane

V sub(2)O5/NiO catalysts were prepared by a solid phase ball milling method using NiO and V sub(2)O sub(5) calcined at different temperatures as precursors. The influence of precursor calcination temperature on the catalytic performance of the V sub(2)O sub(5)/NiO catalysts for oxidative dehydrogena...

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Bibliographic Details
Published inChinese journal of catalysis Vol. 30; no. 10; pp. 991 - 996
Main Authors Siqintana, B, Xu, A, Zhang, Y, Zhaorigetu, B
Format Journal Article
LanguageChinese
Published 01.10.2009
Subjects
Catalysis
Catalysts
Dehydrogenation
Precursors
Propane
Reduction
Roasting
Vanadium pentoxide
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Summary:V sub(2)O5/NiO catalysts were prepared by a solid phase ball milling method using NiO and V sub(2)O sub(5) calcined at different temperatures as precursors. The influence of precursor calcination temperature on the catalytic performance of the V sub(2)O sub(5)/NiO catalysts for oxidative dehydrogenation of propane to propene was investigated. The catalysts were characterized by X-ray diffraction, nitrogen physisorption, inductively-coupled plasma atomic emission spectroscopy, transmission electron microscopy, hydrogen temperature-programmed reduction, and X-ray photoelectron spectroscopy. The results showed that the prerared V sub(2)O sub(5)/NiO catalysts exhibited better catalytic performance and the catalyst obtained from the precursor calcined at 400 C exhibited high selectivity for propene, which is due to their more noncomplete reduction oxygen species O super(d-) existed on the surface of V sub(2)O sub(5)/NiO. At 475 C, 20.1% of C sub(3)H sub(8) conversion and 71.2% of C sub(3)H sub(6) selectivity were
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ISSN:0253-9837