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Ambient temperature CO oxidation using palladium-platinum bimetallic catalysts supported on tin oxide/alumina

Aldridge, James K., Smith, Louise R., Morgan, David J., Carley, Albert F., Humphreys, Mandy, Clarke, Michael J., Wormald, Patricia, Taylor, Stuart H. and Hutchings, Graham J. 2020. Ambient temperature CO oxidation using palladium-platinum bimetallic catalysts supported on tin oxide/alumina. Catalysts 10 (11) , 1223. 10.3390/catal10111223

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A series of Pt-based catalysts were synthesised and investigated for ambient temperature CO oxidation with the aim to increase catalytic activity and improve moisture resistance through support modification. Initially, bimetallic PtPd catalysts supported on alumina were found to exhibit superior catalytic activity compared with their monometallic counterparts for the reaction. Following an investigation into the effect of Pt/Pd ratio, a composition of 0.1% Pt/0.4% Pd was selected for further studies. Following this, SnO2/Al2O3 supports were synthesised from a variety of tin oxide sources. Catalytic activity was improved using sodium stannate and tin oxalate precursors compared with a traditional tin oxide slurry. Catalytic activity versus tin concentration was found to vary significantly across the three precursors, which was subsequently investigated by X-ray photoelectron spectroscopy (XPS) and energy-dispersive X-ray spectroscopy (EDX).

Item Type: Article
Date Type: Publication
Status: Unpublished
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: MDPI
ISSN: 2073-4344
Date of First Compliant Deposit: 26 October 2020
Date of Acceptance: 16 October 2020
Last Modified: 27 Oct 2020 12:30

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