Ballarini, N.; Berry, F. J.; Cavani, F.; Cimini, M.; Ren, X.; Tamoni, D. and Trifiro, F.
|DOI (Digital Object Identifier) Link:||http://doi.org/10.1016/j.cattod.2007.06.080|
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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|
|Keywords:||Propane ammxodation; Acrylonitrile; Mechano-chemical synthesis; Solid-state synthesis; Rutile; Vanadium antimonate|
|Academic Unit/Department:||Science > Life, Health and Chemical Sciences
|Depositing User:||Frank Berry|
|Date Deposited:||07 Mar 2008|
|Last Modified:||14 Jan 2016 16:52|
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