The synthesis of highly crystalline vanadium phosphate catalysts using a diblock copolymer as a structure directing agent

Lin, Zhonjie, Weng, Weihao, Kiely, Christopher John ORCID: https://orcid.org/0000-0001-5412-0970, Dummer, Nicholas ORCID: https://orcid.org/0000-0002-0946-6304, Bartley, Jonathan Keith ORCID: https://orcid.org/0000-0003-4640-541X and Hutchings, Graham John ORCID: https://orcid.org/0000-0001-8885-1560 2010. The synthesis of highly crystalline vanadium phosphate catalysts using a diblock copolymer as a structure directing agent. Catalysis Today 157 (1-4) , pp. 211-216. 10.1016/j.cattod.2010.03.013

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Abstract

Vanadium phosphate catalysts have been widely studied for the selective oxidation of alkanes to a variety of products including maleic and phthalic anhydride. The synthesis of the precursor is a crucial factor in determining the performance of the final catalyst. Changes in the preparation procedure can alter the morphology, surface area, crystallinity and crucially, the exact vanadium phosphate phases present in the final catalyst which can all affect the selectivity and/or activity of the catalyst. In this study, the use of diblock copolymers in the preparation of phosphate oxidation catalysts has been shown to influence the crystallinity and morphology of the catalyst precursor. By adding a diblock copolymer, poly(styrene-alt-maleic acid) (PSMA), into the preparation uniform, highly crystalline VOHPO4·0.5H2O precursors are obtained, leading to a faster, more efficient, activation to the active catalyst.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	hydrocarbon; template; activation; Maleic acid; selectivity; crystallinity; surface area; morphology; preperation; precursor; alkane; oxidation; heterogenous catalysis; Diblock copolymer; catalyst; vanadium phosphate; synthesis
ISSN:	0920-5861
Last Modified:	17 Oct 2022 10:06
URI:	https://orca.cardiff.ac.uk/id/eprint/6835

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