焙烧温度对CuZnAl-MMO/C催化剂结构及其催化CO加氢制取低碳醇性能的影响  

Effect of calcination temperature on the structure of CuZnAl-MMO/C catalyst and its catalytic performance for CO hydrogenation to higher alcohols

作　　者：杨芮 沈亚星 贾鹏龙 洪喆 高志华[1] 黄伟[1] YANG Rui;SHEN Ya-xing;JIA Peng-long;HONG Zhe;GAO Zhi-hua;HUANG Wei(State Key Laboratory of Clean and Efficient Coal Utilization,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学省部共建煤基能源清洁高效利用国家重点实验室,山西太原030024

出　　处：《应用化工》2022年第11期3261-3266,共6页Applied Chemical Industry

基　　金：山西省高等学校科技成果转化培育项目(2020CG0112)。

摘　　要：以β-环糊精作为碳源,采用双滴共沉淀焙烧制备CuZnAl-MMO/C催化剂,探究焙烧温度对催化剂结构和性能的影响。结果表明,β-环糊精在550℃碳化后与催化剂结合最紧密,电子传递能力显著提高;同时,催化剂中Cu物种易于还原,中强碱性位占比最大,从而显著提高催化剂的活性和低碳醇的选择性,CO转化率达22.22%,C_(2+)OH在醇产物中的比例最高达22.06%。CuZnAl-MMO/C Catalysts were prepared by double-drop co-precipitation calcinating usingβ-cyclodextrin as the carbon source,the influence of calcinating temperature on the catalyst structure and properties was investigated.The result showed thatβ-cyclodextrin was most tightly bound to the catalyst after carbonisation at 550℃,with a significant increase in electron transfer capacity;meanwhile,the Cu species in the catalyst were easily reduced with the largest proportion of medium to strong basic sites,which significantly improved the catalyst activity and higher alcohols selectivity.The CO conversion rate reached 22.22%,and the proportion of C_(2+)OH in the total alcohols were 22.06%.

关 键 词：Β-环糊精 CuZnAl-MMO/C 焙烧温度 低碳醇 合成气 

分 类 号：TQ223[化学工程—有机化工] O643[理学—物理化学]