SO_4^(2-)/Zr-MCM-41分子筛的合成及其在酯催化反应中的应用  

Synthesis of SO_4^(2-)/Zr-MCM-41 and application in catalytic esterification

作　　者：刘书静[1] 李云鹏[1] 王彦恩[1] 马晶军[1] 

机构地区：[1]河北农业大学理学院,河北保定071000

出　　处：《河北农业大学学报》2012年第4期108-110,共3页Journal of Hebei Agricultural University

基　　金：河北省保定市科学研究与发展计划(2012)资助

摘　　要：以十六烷基三甲基溴化铵为模板,硅酸钠为硅源,采用微波辐射方法合成出了Zr-MCM-41分子筛,将其在硫酸溶液中浸渍得到了具有酸催化作用的SO42-/Zr-MCM-41分子筛,用于催化合成乳酸乙酯。探讨了对乳酸乙酯收率的各影响因素。结果表明:催化剂锆硅摩尔比为0.05,在100℃条件下微波晶化2.5h,焙烧温度550℃,酯化产率86.2%。催化剂重复使用4次后再活化使用,产率仍达80%以上,且易分离,不污染环境。Zr-MCM-41 was synthesized by microwave method with sodium silicate as silica source and cetrimonium bromide as structure template. It was infused in sulfuric acid to get the SO4^2-/Zr-MCM-41 with acid catalysis. Ethyl lactate was synthesized through it. The effect of factors on the yield was discussed. The optimum synthesis conditions were as follows ： the molar ratio of Zr and Si was 0.05, microwave crystallization 2.5 hours under 100℃ the calcination temperature was 550℃. The yield of esterification was 86.2%. The catalyst can be reused for 4 times before the activation using and yield can still reach over 80 %. Moreover,it can be separated easily from product without polluting the environment.

关 键 词：微波法 SO42-/Zr-MCM-41分子筛 酯化反应 

分 类 号：O621.2[理学—有机化学]