选择性
化学
催化作用
电化学
肉桂醛
电解质
钯
双金属片
无机化学
法拉第效率
电解
光化学
电极
有机化学
物理化学
作者
Yusheng Gao,Aiqun Kong,Mao Peng,Ye Lv,Menghui Liu,Wei Li,Jinli Zhang,Yan Fu
标识
DOI:10.1016/j.mcat.2022.112536
摘要
It is particularly challengeable to achieve C=O selectivity for Pd catalysts in thermal catalytic hydrogenation of cinnamaldehyde (CAL). This work offers a new electrochemical strategy that enables an unexpected switch toward C=O bond for CAL hydrogenation, based on the specific interaction between CAL and electrolyte-modulated Pd surface. Under galvanostatic electrolysis, guanosine 5′-monophosphate-modulated Pd electrode affords a record cinnamyl alcohol (COL) selectivity of 90.3% in neutral catholyte with no sacrifice of CAL conversion, showing the faradaic efficiency of 68.2%. It is of great interest to find that the aromatic moiety of CAL determines the preferential activation toward C=O bond over Pd surface under electric field. It is reported for the first time that selective hydrogenation of α, β-unsaturated aldehydes can be altered by electrochemical environment located between Pd electrode and surrounding electrolyte involving alkali cation along with organic solvent.
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