醛
化学
选择性
酒
糠醛
胺气处理
碱度
羟甲基
酒精氧化
电解质
反应性(心理学)
有机化学
无机化学
催化作用
电极
病理
物理化学
替代医学
医学
作者
Leitao Xu,Zhifeng Huang,Ming Yang,Jingcheng Wu,Wei Chen,Yandong Wu,Yuping Pan,Yuxuan Lu,Yuqin Zou,Shuangyin Wang
标识
DOI:10.1002/anie.202210123
摘要
Selective electrocatalytic oxidation of alcohols to value-added aldehydes has attracted increasing attention. However, due to its higher reactivity than alcohol, the aldehyde is easily over-oxidized to acid in alkaline electrolytes. Herein we realize the selective electrooxidation of alcohol to aldehyde on NiO by tuning the local microenvironment to salt out the aldehyde from the reaction system. The origin of the high selectivity was found to be the inhibition of the hydration of aldehydes, which is the result of the decreased alkalinity and the increased cation and substrate concentration. This strategy could salt out the aldehyde at the gas|electrolyte interface from the electrooxidation of alcohol with 100 % selectivity and be easily extended to other selective oxidation reactions, such as 5-hydroxymethyl furfural (HMF) to 2,5-furandicarboxaldehyde (DFF) and amine to an imine.
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