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

Ko, Myohwa, Kim, Yongseon, Woo, Jinwoo, Lee, Boreum, Mehrotra, Rashmi, Sharma, Pankaj, 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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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: 02 Dec 2022 11:29

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