Ni-P电催化芳香伯胺氧化脱氢的研究  

Study on electrocatalytic dehydrogenation of aromatic primary amine over Ni-P

作　　者：杨晨艺 张培立 YANG Chen-yi;ZHANG Pei-li(State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学,精细化工国家重点实验室,辽宁大连116024

出　　处：《现代化工》2022年第4期151-155,共5页Modern Chemical Industry

基　　金：国家自然科学基金资助项目(21978040);中央高校基本科研业务费专项资金(DUT17RC(3)083)。

摘　　要：以泡沫镍为基底、磷酸镍为镍源、次亚磷酸钠为磷源,通过变电位沉积法制备了Ni-P/NF电极。在0.1 mol/L KOH水溶液中,考察了该电极对催化甲氧基苄胺氧化脱氢制备对甲氧基苯甲腈的影响。结果表明,该氧化脱氢反应的转换率约为96%,法拉第效率约为98%。开路电压测试和原位拉曼研究表明,该电极催化对甲氧基苄胺氧化脱氢的活性中间体是Ni^(3+)OOH。Ni-P/NF electrode is prepared by potentiodynamic deposition method with nickel foam as substrate,nickel phosphate as nickel source,and sodium hypophosphite as phosphorus source.In 0.1 mol·L^(-1) KOH aqueous solution,p-methoxybenzylamine is oxidized to p-methoxybenzonitrile through potentiostatic electrolysis over Ni-P/NF electrode.A conversion of 96%and Faraday efficiency of approximately 98%are obtained during the dehydrogenation process.Open-circuit potential versus time experiment and in situ Raman spectroscopy suggest that Ni^(3+)OOH is the active intermediate during the oxygenation of p-methoxybenzylamine.

关 键 词：电催化 脱氢 电沉积 磷化镍 

分 类 号：TQ151.1[化学工程—电化学工业]