采用自制固体酸La2O3-Ga2O3/硅胶为催化剂催化丙酸与异丁醇进行酯化反应合成了丙酸异丁酯,并采用IR分析对催化剂进行了表征.催化剂的制备条件为La2O3∶Ga2O3∶硅胶=5∶ 20∶75(质量比),500℃焙烧2h.考察了催化剂用量、醇酸物质的量比、反应时间、带水剂种类和催化剂的重复使用性等因素对酯化率的影响.结果表明,适宜的反应条件为0.20 mol丙酸,催化剂用量1.00g、醇酸物质的量比1.8,反应时间90 min,酯化率可达98.2％.
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