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使用强酸性阳离子交换树脂作为催化剂催化乙酸与有机一元醇酯化反应,以乙酸的转化率为考察指标,考察了树脂种类、醇种类、处理温度和重复使用等因素对强酸性阳离子交换树脂催化剂催化活性的影响。实验结果表明,所选择出的凝胶型和大孔型强酸性阳离子交换树脂对乙酸酯化反应具有良好的催化活性。相同的树脂催化剂对乙酸与不同一元醇的酯化反应的催化活性不同,2种树脂催化剂具有良好的耐温性,可在140℃下使用。2种树脂催化剂经15次使用后催化活性没有明显的下降,催化剂的重复使用性能较好。
The strong acid cation exchange resin was used as a catalyst to catalyze the esterification of acetic acid with organic monohydric alcohol. The conversion of acetic acid was taken as the index to investigate the effect of resin type, alcohol type, treatment temperature and repeated use on the catalysis of strongly acidic cation exchange resin catalyst Effect of activity. The experimental results show that the selected gel-type and macroporous strongly acidic cation exchange resins have good catalytic activity for the esterification reaction. The same resin catalyst has different catalytic activity for the esterification of acetic acid with different monohydric alcohols. The two resin catalysts have good temperature resistance and can be used at 140 ° C. The catalytic activity of the two kinds of resin catalysts did not decrease obviously after 15 times of use, and the reusability of the catalyst was better.