Temperature-Controlled Selectivity of Hydrogenation and Hydrodeoxygenation in the Conversion of Biomass Molecule by the Ru 1 /mpg-C 3 N 4 Catalyst

Tian Sheng, Ziyun Wang, Wanbing Gong, Wenxing Chen, Quanchen Feng, Qi Xu, Chun Chen, Chen Chen, Qing Peng, Lin Gu, Huijun Zhao, Peijun Hu, Dingsheng Wang, Yadong Li

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Hydrogenation and hydrodeoxygenation are significant and distinct approaches for the conversion of biomass and biomass-derived oxygenated chemicals into high value-added chemicals and fuels. However, it remains a great challenge to synthesize catalysts that simultaneously possess excellent hydrogenation and hydrodeoxygenation performance. Herein, we report a catalyst made of isolated single-atom Ru supported on mesoporous graphitic carbon nitride (Ru 1 /mpg-C 3 N 4 ), fabricated by a wet impregnation method. The as-prepared Ru 1 /mpg-C 3 N 4 catalyst shows excellent hydrogenation and hydrodeoxygenation performance. First-principles calculations reveal that the Ru atom is mobilized, and the active site is induced by adsorption of the reactants. A systematic reaction mechanism is proposed, suggesting that vanillyl alcohol is the deoxygenation prohibited product, while 2-methoxy-p-cresol is the deoxygenation allowed product. Thus, the excellent selectivity for the hydrogenation or hydrodeoxygenation of vanillin at different temperatures results from switching between the two types of products. © 2018 American Chemical Society.
Original languageEnglish
Pages (from-to)11161-11164
JournalJournal of the American Chemical Society
Volume140
Issue number36
Early online date30 Aug 2018
DOIs
Publication statusPublished - 12 Sep 2018

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