介孔磺酸化坡缕石的制备及催化性能  

Preparation of Mesoporous Sulfonated Palygorskite and Its Catalytic Properties

作　　者：姜德美[1] 应婵娟[1] 马光元[1] 祁彩菊[1] 马红斌[1] 常玥[1,2,3] 

机构地区：[1]西北师范大学化学化工学院,兰州730070 [2]生态环境相关高分子材料教育部重点实验室,兰州730070 [3]甘肃省高分子材料重点实验,兰州730070

出　　处：《硅酸盐通报》2012年第5期1066-1071,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金资助项目(21161017);2010西北师范大学知识与科技创新工程项目(nwnu-kjcxgc-03-63);2010西北师范大学青年教师科研能力提升计划项目

摘　　要：采用后合成方法制备出磺酸官能化的介孔坡缕石固体酸PGS-SO3H催化剂,通过红外光谱,X-射线粉末衍射,扫描电镜和热重等对其进行了表征,并在合成偏苯三酸三辛酯的酯化反应中进行催化性能的评价。单因素考察了催化剂用量,酸醇物质的量比,反应温度等因素对酯化反应的影响。实验结果表明:在反应温度210℃,偏苯三酸酐和2-乙基己醇的物质的量比为1∶4.5,催化剂用量为总反应原料质量的4.9%,反应6 h酯化率可达96.16%。Mesoporous sulfonated palygorskite were p characterized by IR, XRD, TEM, TG. Its catalytic repared by post-synthesis methods. The samples were properties were tested in the esterification reaction of trioctyl trimellitate. Effects of catalyst amounts, the molar ratios of trimellitic anhydride to 2 ethylhexyl alcohol and reaction temperature over the catalyst PGS-SO3H were also studied. Under the optimal reaction conditions of the reaction temperature is at 210 ℃, the molar ratio of trimellitic anhydride to 2 ethylhexyl alcohol is 1：4.5, the weight of catalyst is 4.9% of total weight, the reaction time is 6 h, the esterification rate were 96.16%.

关 键 词：磺酸型固体酸 坡缕石 介孔 偏苯三酸三辛酯 

分 类 号：TQ172[化学工程—水泥工业]