Ag/Al_2O_3(Li_2O)/g-C_3N_4光催化乙醇制取环氧乙烷  

Ag/Al_2O_3(Li_2O)/g-C_3N_4 for Photocatalytic Conversion of Ethanol into Ethylene Oxide

作　　者：陈雅倩[1,2,3,4] 李娟 吴梁鹏[1,2,3] 王楠[1,2,3] 李新军 CHEN Ya-qian;LI Juan;WU Liang-peng;WANG Nan;LI Xin-jun(Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;CAS Key Laboratory of Renewable Energy,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院广州能源研究所,广州510640 [2]中国科学院可再生能源重点实验室,广州510640 [3]广东省新能源和可再生能源研究开发与应用重点实验室,广州510640 [4]中国科学院大学,北京100049

出　　处：《新能源进展》2018年第3期245-248,共4页Advances in New and Renewable Energy

基　　金：国家自然科学基金项目(51172233);广东省自然科学基金项目(2015A030313715);中国科学院可再生能源重点实验室基金项目(Y707j71001)

摘　　要：本文制备了一系列Ag/Al_2O_3(Li_2O)/g-C_3N_4复合催化剂,考察了其可见光催化乙醇制取环氧乙烷的性能。Li_2O可调变Al_2O_3表面的酸性,从而降低了主要副产物乙醛的选择性。Ag/Al_2O_3(Li_2O)在g-C_3N_4上的负载量对产物环氧乙烷的选择性有较大影响,当Ag/Al_2O_3(Li_2O)负载量为5wt%时,乙醇具有较高的转换率,且环氧乙烷的选择性高达100%。A series of Ag/Al2O3(Li2O)/g-C3N4 catalysts were prepared,and their performances for photocatalytic conversion of ethanol into ethylene oxide(EO)were investigated under visible light irradiation.Li2O can adjust the acidity of Al2O3 surface,effectively,so as to reduce the selectivity of the main by-product acetaldehyde.The selectivity of EO was notably influenced by the loading amount of Ag/Al2O3(Li2O)on g-C3N4,which reaches 100%with high ethanol conversion when the loading amount of Ag/Al2O3(Li2O)was 5wt%.

关 键 词：环氧乙烷 乙醇 光催化 可见光 

分 类 号：TK01[动力工程及工程热物理]