固体超强酸(SO_4^(2-)/ZrO_2)催化合成丙二醇甲醚醋酸酯

Propylene Glycol Monomethyl Ether Acetate Catalytic Synthesis by Solid Super Acid(SO_4^(2-)/ZrO_2)

采用固体超强酸(SO2-4/ZrO2)催化剂,丙二醇甲醚(PM)和冰醋酸(HAc)为原料进行酯化反应合成丙二醇甲醚醋酸酯(PMA)。考察了原料配比、催化剂用量、带水剂用量、反应时间以及反应温度等因素对反应的影响。结果表明,当丙二醇甲醚与冰醋酸摩尔比为1∶1.5,催化剂用量为反应物总质量的3.6%,带水剂用量为反应物总质量的30%,反应温度为105~112℃且反应4.2h时,丙二醇甲醚醋酸酯收率可达98.84%。

Propylene glycol monomethyl ether acetate（PMA）was synthesized from propylene glycol monomethyl ether（PM）and glycial acetic acid（HAc）with solid super acid（SO2 -4 /ZrO2）as catalyst. It examines the effects of ratio,catalyst amount,water content,reaction time and reaction temperature on reaction.