祝贺关铭昊、董灵玉等同学的文章
“Boosting Selective Oxidation of Ethylene to Ethylene Glycol Assisted by
In-situ Generated H2O2 from O2 Electroreduction”
被 Angew. Chemie Int. Ed. 接受发表！
Abstract
Ethylene glycol is a useful organic compound and chemical intermediate for manufacturing various commodity chemicals of industrial importance. Nevertheless, the production of ethylene glycol in a green and safe manner is still a long-standing challenge. Here, we established an integrated, efficient pathway for oxidizing ethylene into ethylene glycol. Mesoporous carbon catalyst produces H2O2, and titanium silicalite-1 catalyst would subsequently oxidize ethylene into ethylene glycol with the in-situ generated H2O2. This tandem route presents a remarkable activity, i.e., 86% H2O2 conversion with 99% ethylene glycol selectivity and 51.48 mmol gecat-1 h-1 production rate at 0.4 V vs. reversible hydrogen electrode. Apart from generated H2O2 as an oxidant, there exists •OOH intermediate which could omit the step of absorbing and dissociating H2O2 over titanium silicalite-1, showing faster reaction kinetics compared to the ex-situ one. This work not only provides a new idea for yielding ethylene glycol but also demonstrates the superior of in-situ generated H2O2 in tandem route.
