Esterification of lauric acid with butanol-1 over H3PW12O40 supported on MCM-41
Esterification of lauric acid with butanol-1 over H3PW12O40 supported on MCM-41
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DOI：
10.1016/j.fuel.2012.05.053
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发表时间：
2012-12-01
期刊：
影响因子：
7.4
通讯作者：
Patel, Anjali
中科院分区：
文献类型：
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作者：
Brahmkhatri, Varsha;Patel, Anjali
合成了以12-钨磷酸和MCM-41为原料的多相酸催化剂，并通过比表面积测定（BET法）、X射线衍射（XRD）和固体P-31 MAS-NMR对催化剂进行了表征。评价了该催化剂对脂肪酸、月桂酸与正丁醇的酯化反应的催化活性。考察了催化剂浓度、酸醇摩尔比、反应时间等反应条件对产率的影响。此外，催化剂被回收并重复使用多达四个循环。用经典方法研究了月桂酸酯化反应的动力学行为，发现月桂酸酯化反应符合二级速率定律。还研究了温度对反应速率常数的影响，求得反应的活化能为78 kJ mol（1）。(C)2012爱思唯尔有限公司保留所有权利。
Heterogeneous acid catalyst comprising 12-tungstophosphoric acid and MCM-41 was synthesized and characterized by surface area measurement (BET method), X-ray diffraction (XRD) and solid state P-31 MAS-NMR. The catalytic activity was evaluated for esterification of fatty acid, lauric acid with 1-butanol. Influence of various reaction parameters such as catalyst concentration, acid/alcohol molar ratio and reaction time were studied to optimize the conditions for maximum yields. Also the catalyst was recovered and reused up to four cycles. A study on the kinetic behaviour was carried out by classical method and it was found that esterification of lauric acid follows second order rate law. The influence of temperature on rate constant was also studied and the activation energy was found to be 78 kJ mol (1). (C) 2012 Elsevier Ltd. All rights reserved.