Acidic Electrocatalytic Semihydrogenation of Alkynols to Alkenols on Copper Phosphide at Industrial-Level Current Density  

作　　者：Sanyin Yang Jun Bu Rui Bai Jin Lin Siying An Yafei Wu Ying Guo Jie Gao Jian Zhang 

机构地区：[1]School of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an,Shaanxi,710129 China [2]State Key Laboratory of Solidification Processing,School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an,Shaanxi,710072 China [3]Interdisciplinary Research Center of Biology & Catalysis,School of Life Sciences,Northwestern Polytechnical University,Xi'an,Shaanxi,710072 China

出　　处：《Chinese Journal of Chemistry》2023年第24期3618-3624,共7页中国化学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(22005245 and 22201232);the Key Research and Development Program of Shaanxi Province(2023-YBGY-284);the Fundamental Research Funds for the Central Universities(G2022KY0606 and G2022KY05114);the Synergy Innovation Foundation of the University and Enterprise for Graduate Students in Northwestern Polytechnical University(CX2021037 and CX2022074);the Fundamental Research Funds for China Postdoctoral Science Foundation(BX2021247 and 2021M692635);the Natural Science Foundation of Shaanxi Province(2022JQ-083).

摘　　要：Alkenols are important intermediates for the industrial manufacture of various commodities and fine chemicals.At present,alkenols are produced via thermocatalytic semihydrogenation of corresponding alkynols using precious metal Pd-based catalysts in pressurized hydrogen atmosphere.In this work,we highlight an efficient electrocatalytic strategy for selectively reducing alkynols to alkenols under ambient conditions.Using 2-methyl-3-butyn-2-ol as a model alkynol,Cu3P nanoarrays anchored on Cu foam remarkably deliver an industrial-level partial current density of 0.79 A·cm^(-2) and a specific selectivity of 98%for 2-methyl-3-buten-2-ol in acidic solution.Over a 40-runs stability test,Cu3P nanoarrays maintain 90%alkynol conversion and 90%alkenol selectivity.Even in a large two-electrode flow electrolyser,the single-pass alkynol conversion and alkenol selectivity of Cu3P nanoarrays exceed 90%.Moreover,this selective electrocatalytic hydrogenation approach is broadly feasible for the production of various water-soluble alkenols.Electrochemical analyses,theoretical simulation and electrochemical in-situ infrared investigations together reveal that exothermic alkynol hydrogenation,facile alkenol desorption and formation of active H on Cu3P surfaces account for the excellent electrocatalytic performance.

关 键 词：ALKYNOL Alkenol Cu_(3)P nanoarrays Electrocatalysis SEMIHYDROGENATION Mass spectrometry IR spectroscopy Heterogeneous catalysis 

分 类 号：O64[理学—物理化学]