CuAg双金属催化剂选择性还原CO_(2)为CH_(3)OH的研究  

Selective electrocatalytic reduction of CO_(2) to CH_(3)OH usinga CuAg bimetallic catalyst

作　　者：杨浩瑜 谢娟[1] 王虎[1] YANG Hao-yu;XIE Juan;WANG Hu(School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学新能源与材料学院,四川成都610500

出　　处：《现代化工》2024年第S02期208-214,共7页Modern Chemical Industry

基　　金：四川省产教融合示范项目“四川省光伏产业产教融合综合示范基地”资助(川财教[2022]106号)。

摘　　要：CO_(2)选择性电催化还原生成甲醇、乙醇等液相产物是CO_(2)资源化利用的有效途径,但该技术存在产物选择性差、法拉第效率低等问题。因此,以Ag修饰的泡沫铜为催化剂,在0.1 mol/L Na_(2)SO_(4)的电解质溶液中将CO_(2)电化学还原为液相产物。结果表明,CuAg双金属催化剂能抑制析氢反应的产生,并显著提升甲醇产物的选择性,甲醇的法拉第效率高达85.48%;电解超过100 h,催化剂的催化性能仍保持稳定。The selective electrocatalytic reduction of CO_(2)to produce liquid phase products such as methanol and ethanol,is considered an effective approach for the utilization of CO_(2)resource.However,this technology still faces challenges including poor product selectivity and low Faraday efficiency.In this paper,we conducted the electrochemical reduction of CO_(2)to liquid phase products in a 0.1 mol/L Na_(2)SO_(4) electrolyte solution using Ag-modified copper foam as a catalyst.The results demonstrate that CuAg bimetallic catalyst effectively suppresses the hydrogen evolution reaction while significantly enhancing the selective production of methanol,with a remarkable Faraday efficiency reaching 85.48%.Moreover,our catalyst exhibits excellent stability over 100 hours of continuous electrolysis.

关 键 词：电催化CO_(2)还原 CuAg双金属催化剂 CH_(3)OH 

分 类 号：O646[理学—物理化学]