Ambient Temperature CO Oxidation Using Palladium–Platinum Bimetallic Catalysts Supported on Tin Oxide/Alumina

James K. Aldridge; Louise R. Smith; David J. Morgan; Albert F. Carley; Mandy Humphreys; Michael J. Clarke; Patricia Wormald; Stuart H. Taylor; Graham J. Hutchings

doi:10.3390/catal10111223

Catalysts (Oct 2020)

Ambient Temperature CO Oxidation Using Palladium–Platinum Bimetallic Catalysts Supported on Tin Oxide/Alumina

James K. Aldridge,
Louise R. Smith,
David J. Morgan,
Albert F. Carley,
Mandy Humphreys,
Michael J. Clarke,
Patricia Wormald,
Stuart H. Taylor,
Graham J. Hutchings

Affiliations

James K. Aldridge: Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
Louise R. Smith: Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
David J. Morgan: Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
Albert F. Carley: Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
Mandy Humphreys: Molecular Products, Parkway, Harlow Business Park, Harlow, Essex CM19 5FR, UK
Michael J. Clarke: Molecular Products, Parkway, Harlow Business Park, Harlow, Essex CM19 5FR, UK
Patricia Wormald: Molecular Products, Parkway, Harlow Business Park, Harlow, Essex CM19 5FR, UK
Stuart H. Taylor: Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK
Graham J. Hutchings: Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK

DOI: https://doi.org/10.3390/catal10111223
Journal volume & issue: Vol. 10, no. 11
p. 1223

Abstract

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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).

Published in Catalysts

ISSN: 2073-4344 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology; Science: Chemistry
Website: https://www.mdpi.com/journal/catalysts

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