高岭土催化甲醇制二甲醚性能的影响因素  

Influencing factors of catalytic performance of kaolin for methanol to dimethyl ether

作　　者：刘丽娜[1] 王鼎[2] 高晶晶[1] Liu Lina;Wang Ding;Gao Jingjing(School of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,Shaanxi,China;School of Chemical Engineering,Yulin Vocational And Technical College,Yulin 719000,Shaanxi,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]榆林职业技术学院化工学院,陕西榆林719000

出　　处：《工业催化》2021年第5期43-46,共4页Industrial Catalysis

基　　金：陕西省科技计划项目(2021JM-523)。

摘　　要：二甲醚作为一种重要的有机化工原料有着极其广泛的应用前景。用50%质量浓度的硫酸对高岭土进行改性制备酸改性高岭土催化剂,在自制的反应器中进行甲醇制二甲醚的活性测试。通过改性浓度、光源和反应环境的变化分别对催化剂的活性进行考察。结果表明,高岭土经过高浓度的硫酸改性后出现了明显的L酸中心;以高压汞灯为光源,在二氧化碳的反应环境下,催化剂催化甲醇制二甲醚的活性较好。As an important organic chemical raw material,dimethyl ether(DME)has an extremely wide application prospect.The acid modified kaolin catalyst was prepared by modifying kaolin with 50%sulf-uric acid,and the activity of methanol to dimethyl ether was tested in the self-made reactor.The activity of the catalyst was investigated by changing the concentration,light source and reaction environment.The results show that the kaolin modified with high concentration of sulfuric acid has obvious L acid center,and the catalytic activity of the catalyst for methanol to dimethyl ether is better under the reaction environment of carbon dioxide with high pressure mercury lamp.

关 键 词：催化化学 高岭土 甲醇 二甲醚 高压汞灯 CO_(2) 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]