Synthesis, characterization and catalytic application of H3PW12O40/MCM-48 in the esterification of methacrylic acid with n-butyl alcohol

被引：0
作者：
Yijun Zhang
Shuijin Yang
机构：
[1] Hubei Normal University,Hubei Key Laboratory of Bioanalytical Technique, Department of Chemistry and Environmental Engineering
[2] Central China Normal University,College of Chemistry
来源：
Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2008年 / 23卷
关键词：
MCM-48 molecular sieve; phosphotungstic acid; n-butyl methacrylate; catalysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A novel environmental friendly catalyst, H3PW12O40/MCM-48, was prepared by impregnation method. The catalysts were characterized by means of XRD and FT-IR. The synthesis of n-butyl methacrylate catalyzed by H3PW12O40/MCM-48 was studied with methacrylic acid and n-butyl alcohol as reactants. H3PW12O40/MCM-48 is an excellent catalyst for synthesizing n-butyl methacrylate and Keggin structure of H3PW12O40 kept unchanged after being impregnated on surface of the molecular sieve support. Effects of n(methacrylic acid):n(n-butyl alcohol), catalyst dosage, cyclohexane(water-stripped reagent) and reaction time on yields of the product were investigated. The optimum conditions have been found, that is, molar ratio of acid to alcohol is 1:1.6, mass ratio of catalyst used to the reactants is 0.5% and reaction time is 2.0 h. Under these conditions, the yield of n-butyl methacrylate can reach 93.7%.
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页码：346 / 349
页数：3
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