Cu催化剂的络合完全液相制备及催化性能研究  

Preparation of Cu-based catalysts by complexation complete liquid-phase technology and their catalytic performances

作　　者：喻仕瑞 黄伟[2] YU Shi-rui;HUANG Wei(Department of Food Science and Technology,Moutai College,Renhuai 564500,China;Key Laboratory of Coal Science and Technology of Education Ministry and Shanxi Province,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]茅台学院,贵州仁怀564500 [2]太原理工大学煤科学与技术省部共建重点实验室,山西太原030024

出　　处：《天然气化工—C1化学与化工》2018年第4期1-6,共6页Natural Gas Chemical Industry

基　　金：国家自然科学重点基金(21336006)

摘　　要：为考察络合剂对Cu基催化剂形貌、结构和催化性质的影响,采用络合完全液相法制备CuZnAl催化剂,并用XRD、H_2-TPR、NH_3-TPD、CO_2-TPD对催化剂进行了表征。在浆态床中对催化剂的CO加氢反应性能进行了考察。结果显示,没食子酸络合完全液相法制备的CuZnAl催化剂展现出与传统甲醇催化剂不同的性能,乙醇选择性高(达11.1%),催化活性稳定,120h后CO转化率扔维持45%左右。表征结果显示,催化剂表面Cu^+和Cu^0共存,产生高的碱酸比是乙醇得以形成原因。这为制备低成本乙醇Cu基催化剂提供了另外一种研究途径。In order to investigate the effect of complexing agent on the morphology,structure and catalytic properties of Cu-based catalysts,CuZnAl catalysts were prepared by complexation complete liquid-phase technology,and the catalysts were characterized by XRD,H2-TPR,NH3-TPD and CO2-TPD.The CO hydrogenation reaction performances of the catalysts were examined in a slurry bed.The results show that the CuZnAl catalyst prepared by the complete liquid-phase technology with gallic acid as complexing agent exhibits different performance from the traditional methanol catalyst,having high ethanol selectivity(up to 11.1%)and good catalytic activity stability.The CO conversion could be maintained at about 45%after 120h.The characterization results indicate that the ethanol formation is attributed to the coexistence of Cu+and Cu0 on the catalyst surface and the high base-acid ratio of the catalyst.This provides an alternative approach to the preparation of low cost Cu-based catalysts for synthesis of ethanol.

关 键 词：Cu基催化剂 络合剂 完全液相法 CO加氢 乙醇 

分 类 号：O643.3[理学—物理化学] TQ426[理学—化学]