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The synthesis of rutile-type V/Sb mixed oxides, catalysts for the ammoxidation of propane to acrylonitrile: A comparison of high-energy milling and co-precipitation methods

Ballarini, N.; Berry, F. J.; Cavani, F.; Cimini, M.; Ren, X.; Tamoni, D. and Trifiro, F. (2007). The synthesis of rutile-type V/Sb mixed oxides, catalysts for the ammoxidation of propane to acrylonitrile: A comparison of high-energy milling and co-precipitation methods. Catalysis Today, 128(3-4) pp. 161–167.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1016/j.cattod.2007.06.080
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Abstract

This paper describes the preparation of rutile-type V/Sb mixed oxide (vanadium antimonate) with the ball-milling (mechano-chemical) method starting from single metal oxides, as well as the comparison with a similar system prepared by the co-precipitation method. Samples were tested as catalysts for the gas-phase ammoxidation of propane to acrylonitrile. The mechano-chemical method allowed the preparation of the rutile-type mixed oxide characterized by smaller crystallite size than the catalyst prepared by co-precipitation and calcined at 450 °C. The calcination at 700 °C of the sample prepared by the mechano-chemical method led to a crystalline vanadium antimonate characterized by a higher concentration of cationic defects than the corresponding calcined sample prepared by co-precipitation. This led to a considerably higher activity in propane ammoxidation, but to a lower selectivity to acrylonitrile.

Item Type: Journal Article
ISSN: 0920-5861
Keywords: Propane ammxodation; Acrylonitrile; Mechano-chemical synthesis; Solid-state synthesis; Rutile; Vanadium antimonate
Academic Unit/Department: Science > Life, Health and Chemical Sciences
Item ID: 10420
Depositing User: Frank Berry
Date Deposited: 07 Mar 2008
Last Modified: 02 Dec 2010 20:07
URI: http://oro.open.ac.uk/id/eprint/10420
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