Direct propylene epoxidation with oxygen using a photo-electro-heterogeneous catalytic system

Ko, Myohwa, Kim, Yongseon, Woo, Jinwoo, Lee, Boreum, Mehrotra, Rashmi, Sharma, Pankaj ORCID: https://orcid.org/0000-0003-2319-260X, Kim, Jinjong, Hwang, Seon Woo, Jeong, Hu Young, Lim, Hankwon, Joo, Sang Hoon, Jang, Ji-Wook and Kwak, Ja Hun 2022. Direct propylene epoxidation with oxygen using a photo-electro-heterogeneous catalytic system. Nature Catalysis 5 (1) , 37–44. 10.1038/s41929-021-00724-9

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Abstract

Propylene oxide is a crucial feedstock in the plastic industry. The direct epoxidation of propylene using O2 is considered among the most promising means of producing propylene oxide. Here we report an integrated photo-electro-heterogeneous catalytic system for propylene epoxidation with O2. Bismuth vanadate (or TiO2) photocatalyst and a Co-based electrocatalyst produces H2O2. A titanium silicalite-1 heterogeneous catalyst subsequently epoxidizes propylene to propylene oxide with the in situ-generated H2O2. The proposed system enables propylene oxide production with O2 as the sole oxidizing agent under light irradiation without using H2, a sacrificial agent, or external bias. It stably produces propylene oxide for 24 h with high selectivity (≥98%) under ambient conditions. These results demonstrate the potential of this catalytic system to produce chemical compounds in an environmentally benign manner.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry Cardiff Catalysis Institute (CCI)
Publisher:	Nature Research
ISSN:	2520-1158
Date of First Compliant Deposit:	2 December 2022
Date of Acceptance:	12 November 2021
Last Modified:	03 May 2023 23:34
URI:	https://orca.cardiff.ac.uk/id/eprint/153563

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