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Influence of Milling Media on the Physicochemicals and Catalytic Properties of Mechanochemical Treated Vanadium Phosphate Catalysts

Taufiq-Yap, Y. H., Goh, C. K., Hutchings, Graham John, Dummer, Nicholas and Bartley, Jonathan Keith 2011. Influence of Milling Media on the Physicochemicals and Catalytic Properties of Mechanochemical Treated Vanadium Phosphate Catalysts. Catalysis Letters 141 (3) , pp. 400-407. 10.1007/s10562-010-0508-8

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Abstract

VOHPO4.0.5H2O synthesized via the alcohol reduction of VOPO4.2H2O was mechanochemical treated for 30 min in three different media, i.e. cyclohexane, ethanol and air. XRD results revealed that their structure became less crystalline compared to the unmilled material. SEM showed that the particles for the milled materials become smaller and unique features were observed in the different type of media used. The reactivity of the oxygen species linked to V5? and V4? were also affected by the milling process. The selectivity to maleic anhydride from n-butane oxidation were observed to increase in line with the increase in the oxygen species associated with V5? and the presence of isolated V5? phase. A correlation was observed between the crystallite size of the pyrophosphate phase at (020) plane with the maleic anhydride selectivity.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: Mechanochemical; Vanadium phosphate; Maleic anhydride; n-butane oxidation
Publisher: Wiley
ISSN: 1011-372X
Last Modified: 04 Nov 2017 23:36
URI: http://orca.cf.ac.uk/id/eprint/13113

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