论文部分内容阅读
一种丙二醇甲醚醋酸酯的生产方法,涉及化学合成工艺,采用负载型催化剂,以丙二醇甲醚和醋酸为原料进行酯化反应,反应生成的水经过共沸精馏脱除,反应生成的产物经过精馏后取得丙二醇甲醚醋酸酯。本发明催化剂具有均一的分子大小的孔道,离子交换性能,酸催化活性,有良好的热稳定性和水热稳定性。本发明可实现一段式连续化生产丙二醇甲醚醋酸酯,操作方式简单,显著提高了丙二醇甲醚醋酸酯
A method for producing propylene glycol methyl ether acetate relates to a chemical synthesis process using a supported catalyst to esterify the propylene glycol methyl ether and acetic acid as raw materials and removing the water generated by the reaction through azeotropic distillation. After distillation obtained propylene glycol methyl ether acetate. The catalyst of the present invention has a uniform molecular size of the pores, ion exchange performance, acid catalytic activity, good thermal stability and hydrothermal stability. The invention can realize the continuous production of propylene glycol methyl ether acetate in a one-step mode, has the advantages of simple operation method, remarkably enhanced propylene glycol methyl ether acetate