文献类型：期刊文献

中文题名：甲醇羰基化制乙酸中活性炭负载镧催化剂研究

英文题名：Study on activated carbon-supported lanthanum catalysts for carbonylation of methanol to acetic acid

作者：谢汪洋[1];王俊有[1];沈卫华[1];方云进[1]

机构：[1]华东理工大学化工学院,化学工程联合国家重点实验室,上海200237

年份：2025

卷号：45

期号：S2

起止页码：108

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金项目(21576083)。

语种：中文

中文关键词：甲醇;羰基化;镧;乙酸;活性炭

外文关键词：methanol;carbonylation;lanthanum;acetic acid;activated carbon

摘要：采用等体积浸渍法制备了一系列不同负载量的活性炭负载镧催化剂,通过XRD、SEM、TEM、BET、NH_3-TPD等方法手段对催化剂进行表征,并用固定床评价其对甲醇和合成气制乙酸的影响。结果表明,镧在活性炭中高度分散,负载镧之后活性炭的孔结构和酸度发生了变化。在280℃、5 MPa、体积空速2 h^(-1)、v(CO)∶v(H_(2))=1∶2的工艺条件下,5%La/AC催化剂的催化活性最好,甲醇转化率达90.40%,乙酸选择性为22.83%,乙酸甲酯选择性为11.16%。考察了温度和压力对反应的影响,发现最适宜的反应温度和压力分别为260℃和5 MPa。
A series of activated carbon loaded lanthanum catalysts with different loading amount are prepared via equal-volume impregnation method,and characterized by means of XRD,SEM,TEM,BET,NH3-TPD,etc.The effects of these catalysts on the production of acetic acid from methanol and syngas are evaluated on a fixed bed.It is found that La disperses highly in activated carbon,and the pore structure and acidity of activated carbon change after loading lanthanum.Under the conditions that T=280℃,pressure is 5 MPa,LHSV=2 h^(-1),and v(CO)∶v(H_(2))=1∶2,the 5% La/AC presents the best catalytic activity,the conversion rate of methanol is 90.40%,the selectivity of acetic acid is 22.83%,and the selectivity of methyl acetate is 11.16%.The influences of temperature and pressure on the reaction are also explored,showcasing that the most suitable temperature and pressure are 260℃and 5 MPa,respectively.