Preparation method of catalyst used in reaction process of acetyl acetone

The invention discloses a preparation method of a catalyst used in the reaction process of acetyl acetone. The catalyst is used in the process of esterification reactions between ketene and acetone togenerate isopropenyl acetate. The preparation method comprises following steps: step one, weighing acetic anhydride, adding acetic anhydride into a catalyst preparing pot, starting stirring, then opening the jacket of the catalyst preparing pot, cooling the catalyst preparing pot by cool water, and slowly dropwise adding weighed chlorosulfonic acid into the catalyst preparing pot; and step two, after the dropwise addition in the step one, maintaining the temperature for 3 hours to obtain a super strong catalyst namely acetyl sulfonyl acetic acid. The catalyst can reduce side reactions and kinds of byproducts, and improves the conversion rate and yield. 本发明公开了一种乙酰丙酮反应过程中的催化剂及其制备方法，该催化剂是在乙烯酮与丙酮发生酯化反应生成乙酸异丙烯酯过程中使用的，其具体制备过程如下：步骤一：取配量醋酐加入到催化剂配制罐，开启搅拌，然后打开配制罐夹套，冷水降温，取配量氯磺酸缓慢滴加催化剂配制罐；步骤二：在步骤一滴加结束后，保温3小时，得到超强酸催化剂-乙酰磺酰乙酸，