C-Cu_(2)O复合电极用于电化学还原CO_(2)制甲醇  

C-Cu_(2)O Composite electrode using for electrochemical reduction of CO_(2) to methanol

作　　者：代灵英 苏永庆[1] 古铭岚 王晗雪 张咪 DAI Ling-ying;SU Yong-qing;GU Ming-lan;WANG Han-xue;ZHANG Mi(Faculty of Chemistry&Chemical Engineering,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]云南师范大学化学化工学院,云南昆明650500

出　　处：《应用化工》2022年第7期1946-1949,共4页Applied Chemical Industry

基　　金：国家自然科学基金项目(21163025,21763034)。

摘　　要：以Cu片制备了C-Cu_(2)O复合电极,通过SEM表征,C-Cu_(2)O复合电极具有微观网状结构,极大地提高了微观表面积。在含KOH的碱性乙醇溶液中,以C-Cu_(2)O复合电极为阴极,CO_(2)能被电化学还原为CH_(3)OH,通过正交设计实验,优选出了CH_(3)OH产率最佳的工艺条件,即电解质组成为90%C_(2)H_(5)OH(体积分数)和2g/LKOH,在CO_(2)流速10 min/mL,阴极电解电压-1.0 V(vs.SCE)时,产物CH_(3)OH的法拉第效率为82%。The C-Cu_(2)O composite electrode was prepared from Cu sheet.The SEM showed that the C-Cu_(2)O composite electrode had a micro network structure,which greatly improved the micro surface area.CO_(2) can be electrochemically reduced to CH_(3)OH with C-Cu_(2)O composite as cathode in alkaline ethanol solution containing KOH.The optimum conditions for the yield of CH_(3)OH were determined by orthogonal design.The results showed that the Faraday efficiency of CH_(3)OH was 82%when the electrolyte composition was 90% C_(2)H_(5)OH and 2 g/L KOH,the flow rate of CO_(2) was 10 min/mL,and the cathode voltage was-1.0 V(vs.SCE).

关 键 词：C-Cu_(2)0复合电极 CO_(2) 阴极还原 CH_(3)OH 

分 类 号：TQ15[化学工程—电化学工业]