SO_4^(2-)/ZrO_2/MCM-41催化丙烯和乙酸合成乙酸异丙酯的研究  

Study on synthesis of isopropyl acetate from propylene and acetic acid via SO_4^(2-)/ZrO_2/MCM-41 catalyst

作　　者：王富丽[1] 王学丽[1] 任涛[1] 连丕勇[1] 

机构地区：[1]辽宁石油化工大学材料化学系,辽宁抚顺113001

出　　处：《化工科技》2006年第6期1-5,共5页Science & Technology in Chemical Industry

基　　金：国家自然科学基金资助项目(29792070)

摘　　要：水热合成了介孔材料MCM-41,并以其为载体负载固体超强酸SO42-/ZrO2,通过XRD和N2吸附/脱附对制备的SO42-/ZrO2/MCM-41催化剂进行了表征。在固定床反应器中,以丙烯和乙酸为原料,研究了该催化剂合成乙酸异丙酯的活性。对反应条件进行了系统考察,得出了最佳的反应条件:反应温度140℃;反应压力1.2 MPa;空速(LHSV)1.0h-1;n(C3H6)∶n(CH3COOH)=3∶1。在此条件下,乙酸异丙酯的产率最高可达68.9%。同时,通过48 h的催化剂寿命实验,结果表明该催化剂具有较好的稳定性。Solid superacid SO4^2-/ZrO2 was loaded on the surface of MCM-41, which was prepared by hydrothermal methods. The SO4^2-/ZrO2/MCM-41 catalysts were characterized by XRD and N2 adsorption/ desorption techniques. The catalytic activity of SO4^2-/ZrO2/MCM-41 for synthesis of isopropyl acetate from propylene and acetic acid was studied in fixed-bed reaction system. The reaction conditions were inspected in detail and the optimum reaction conditions were obtained, that is, reaction temperature is 140℃ ; reaction pressure is 1.2 MPa;space velocity （LHSV） is 1.0 h^-1 ; n （C3H6） ： n（CH3COOH） = 3 ： 1. Under these conditions, the yield of isopropyl acetate is up to 68.9 %. At the same time,as is known that the catalysts possess quite good stability through 48 h lifetime experiment.

关 键 词：SO4^2-/ZrO2/MCM-41 乙酸异丙酯 丙烯 乙酸 

分 类 号：TQ426.65[化学工程]