完全液相法CuZnAl浆态催化剂性能研究  

Catalytic performance of CuZnAl slurry catalyst prepared by complete liquid-phase technology

作　　者：喻仕瑞 黄伟[2] YU Shi-rui;HUANG Wei(Practice and Experiment Teaching Center,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]茅台学院食品科学与工程,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：《应用化工》2018年第S02期53-57,共5页Applied Chemical Industry

基　　金：国家自然科学基金(21176167);国家自然科学重点基金(21336006)。

摘　　要：用完全液相法制备CuZnAl浆态催化剂,并与溶胶、凝胶法催化剂进行了结构和浆态床CO加氢性能比较。在温度513 K、压力4.0 MPa、H_(2)/CO=1、空速为360 mL/(g cat.h)及没有碱金属促进下,完全液相法催化剂呈现较好C_(2+)OH选择性,达23%C_(2+)OH,总醇选择性为70%,CO转化率为28%;而凝胶溶胶法C_(2+)OH仅为2.2%,总醇选择性76%和CO转化率29%。运用XRD、H_(2)-TPR、XPS、NH_(3)-TPD对两类催化剂进行表征,结果表明,完全液相法赋予催化剂新的酸性和组分Cu^(+),正是这些新变化促成碳链增长。作为催化剂制备方法之一的完全液相法为Cu基催化剂催化CO加氢催制C_(2+)OH,特别是乙醇,展示了良好的发展潜力。It was carried out that catalytic performace of CuZnAl catalysts prepared by complete liquid-phase technology and sol-gel method for converting syngas tOalcohol.Activity tests indicate that the CuZnAl catalyst using complete liquid-phase technology can efficiently catalyze converting syngas tOhigher alcohol in a slurry reactor,while COconversion reaches 28%and total alcohol selectivity is 70%,with a C_(2+)OH selectivity of 23%;while C_(2+)OH selectivity of 2.2%,mix alcohol is 76%and COconversion rate is 29%by sol-gel method under the condition of 513 K,4.0 MPa,H_(2)/CO=1,GHSV=360 ml/(g cat.h)and without alkail metal promoter.Catalyst was characteristiced,using XRD,H_(2)-TPR,NH_(3)-TPD and XPS.The result show that appropriate acid type,acid quantity and Cu^(+)on the catalyst by complete liquid-phase method are responsible tOenhance the selectivity of C_(2+)OH.The complete liquid-phase technology is potential development prospect for converting syngas tOhigher alcohol,especially ethanol.

关 键 词：完全液相法 C_(2+)OH醇 一氧化碳加氢 铜锌铝催化剂 

分 类 号：O643[理学—物理化学]