双功能
脱氢
催化作用
酒
氢
乙二醇
双功能催化剂
配体(生物化学)
化学
光化学
组合化学
有机化学
生物化学
受体
作者
Jing Wang,Huichong Liu,Jiawei Chen,Lingyun Cao,Cheng Wang
摘要
Alcohols are attractive portable chemical carriers of hydrogen thanks to their reversible dehydrogenation, but the hydrogen release reaction is thermodynamically unfavorable. Coupling the alcohol dehydrogenation to acetal formation can shift the reaction thermodynamics for hydrogen production. Here, we stabilized Ir3+ and Sc3+ in a metal-organic framework (MOF) for tandem catalysis. The Ir3+ center bearing an α-hydroxybipyridine ligand catalyzes alcohol dehydrogenation, and the Sc3+ Lewis acid site catalyzes acetal formation that allows further dehydrogenation to form esters. The bifunctional UiO-bpyOH-IrCp-Sc catalyst effectively converts ethylene glycol to ester and H2 without producing CO.
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