固体超强酸SO2-.4/ZrO.2催化合成乙酰水杨酸(1)
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【摘要】 以水杨酸和乙酸酐为反应原料,采用固体超强酸SO2-.4/ZrO.2为催化剂合成了乙酰水杨酸,考察了超强酸的焙烧温度,反应温度,反应时间,原料摩尔比,以及催化剂用量对反应的影响。结果表明,当焙烧温度为650℃,反应温度80℃,反应时间30 min,水杨酸与乙酸酐摩尔比为1:2.0,催化剂用量为0.8 g时,乙酰水杨酸收率可达82.4%。重复使用6次仍具有良好催化活性。
【关键词】 固体超强酸;乙酰水杨酸;合成
Catalytic Synthesis of acetyl salicylic acid With the Solid Superacid SO2-.4/ZrO.2
LI Yao-zong,WANG Rui,ZHANG Can.School of chemistry and Biotechnology,Yannan Nationalities University, Kunming Yunnan, 650500,China
【Abstract】 In the synthesis of acetyl salicylic acid,Salicylic acid and acetic anhydride were used as the reaction raw material, with solid super acid SO2-.4/ZrO.2 as catalyst. The factors such as superacid calcination temperature, reaction temperature, reaction time, molar ratio, and the amount of catalyst influencing the reaction were discussed ......
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