The direct synthesis of hydrogen peroxide from H2 and O2 using Pd-Ni/TiO2 catalysts

Crole, David A., Underhill, Ricci, Edwards, Jennifer K. ORCID: https://orcid.org/0000-0003-4089-2827, Shaw, Greg, Freakley, Simon J., Hutchings, Graham J. ORCID: https://orcid.org/0000-0001-8885-1560 and Lewis, Richard J. 2020. The direct synthesis of hydrogen peroxide from H2 and O2 using Pd-Ni/TiO2 catalysts. Philosophical Transactions A: Mathematical, Physical and Engineering Sciences 378 (2176) , 20200062. 10.1098/rsta.2020.0062

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Abstract

The direct synthesis of hydrogen peroxide (H2O2) from molecular H2 and O2 offers an attractive solution to decentralised production compared to the anthraquinone process. Herein we evaluate the performance of a 0.5%Pd-4.5%Ni/TiO2 catalyst in batch and flow reactor systems using water as a solvent at ambient temperature which makes synthesising high H2O2 concentrations challenging. Catalyst activity was observed to be stable to prolonged use in multiple batch experiments or in a flow system, with selectivities towards H2O2 of 97% and 85% respectively. This study was carried out in the absence of halide or acid additives that are typically used to inhibit sequential H2O2 degradation reactions showing that this Pd-Ni catalyst has potential to produce H2O2 selectively

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	Royal Society, The
ISSN:	1364-503X
Date of Acceptance:	4 May 2020
Last Modified:	06 Nov 2024 20:01
URI:	https://orca.cardiff.ac.uk/id/eprint/129780

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