Enhanced catalyst selectivity in the direct synthesis of H2O2 through Pt incorporation into TiO2 supported AuPd catalysts

Xiaoxiao Gong; Richard J. Lewis; Song Zhou; David J. Morgan; Thomas E. Davies; Xi Liu; Christopher J. Kiely; Baoning Zong; Graham J. Hutchings

doi:10.1039/D0CY01079K

Enhanced catalyst selectivity in the direct synthesis of H₂O₂ through Pt incorporation into TiO₂ supported AuPd catalysts†

Xiaoxiao Gong,‡^ab Richard J. Lewis,

‡^a Song Zhou,^cde David J. Morgan,

^a Thomas E. Davies,^a Xi Liu,^cf Christopher J. Kiely,^ag Baoning Zong

*^b and Graham J. Hutchings

*^a

Author affiliations

* Corresponding authors

^a Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, UK
E-mail: Hutch@cardiff.ac.uk

^b Laboratory of Catalytic Materials and Chemical Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing, P.R. China
E-mail: Zongbn.ripp@sinopec.com

^c SynCat@Beijing, Synfuels China Technology Co. Ltd., Beijing, P.R. China

^d State Key Laboratory of Coal Convers, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, P.R. China

^e School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing, P.R. China

^f School of Chemistry and Chemical Engineering, In-situ Centre for Physical Science, Shanghai Jiao Tong University, Shanghai, P. R. China

^g Department of Materials Science and Engineering, Lehigh University, Bethlehem, USA

Abstract

The introduction of small quantities of Pt into supported AuPd nanoparticles is found to result in enhanced catalytic efficiency in the direct synthesis of H₂O₂. This is attributed to a combination of superior H₂O₂ synthesis rates, as determined through calculation of initial rates of reaction, and an inhibition of H₂O₂ degradation pathways, achieved through the modification of Pd oxidation states. Through gas replacement experiments we demonstrate that it is possible to reach concentrations of H₂O₂ approaching those produced during initial stages of the current industrial means of H₂O₂ production.

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DOI: https://doi.org/10.1039/D0CY01079K
Article type: Paper
Submitted: 28 May 2020
Accepted: 17 Jun 2020
First published: 24 Jun 2020
This article is Open Access

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Catal. Sci. Technol., 2020,10, 4635-4644

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Enhanced catalyst selectivity in the direct synthesis of H₂O₂ through Pt incorporation into TiO₂ supported AuPd catalysts

X. Gong, R. J. Lewis, S. Zhou, D. J. Morgan, T. E. Davies, X. Liu, C. J. Kiely, B. Zong and G. J. Hutchings, Catal. Sci. Technol., 2020, 10, 4635 DOI: 10.1039/D0CY01079K

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Catalysis Science & Technology

Enhanced catalyst selectivity in the direct synthesis of H₂O₂ through Pt incorporation into TiO₂ supported AuPd catalysts†

Abstract

Supplementary files

Article information

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Enhanced catalyst selectivity in the direct synthesis of H₂O₂ through Pt incorporation into TiO₂ supported AuPd catalysts

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