The role of V4+ ions in vanadium oxide catalysts. I. Decomposition of 2-propanol

Chakrabarty, D. K. ; Rajyalakshmi, M. ; Biswas, A. B. (1980) The role of V4+ ions in vanadium oxide catalysts. I. Decomposition of 2-propanol Proceedings of the Indian Academy of Sciences - Chemical Sciences, 89 (2). pp. 131-137. ISSN 0253-4134

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Official URL: http://www.ias.ac.in/j_archive/chemsci/89/3/131-13...

Related URL: http://dx.doi.org/10.1007/BF02892997

Abstract

Decomposition of 2-propanol has been studied on vanadium pentoxide with MoO3 and WO3 additives. It has been observed that a small amount of the additives increases the dehydration activity of the catalysts, but at 5% or higher concentration, dehydration of 2-propanol decreases. The initial increase followed by a decrease in the dehydration activity with increased amount of additives is due to the change in the rate-determining step. Addition of MoO3, WO3, and alkali metal oxides to vanadium pentoxide has similar effects on the V4+ concentration and catalytic activity. Based on the results of the kinetic and ESR spectral studies, a scheme for the reaction has been proposed. It is concluded that the concentration of V4+ ion plays the crucial role in these catalysts.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Dehydration Activity; Vanadium Concentration; 2-propanol Decomposition
ID Code:81146
Deposited On:04 Feb 2012 07:48
Last Modified:18 May 2016 22:49

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