1,2,3-三氮唑-4,5-二羧酸-磷钨酸的制备及其催化合成缩酮(醛)  

Preparation of solid acid TDA-HPW and its application in the synthesis of acetal and ketal

作　　者：栾庆洁 王红红[1] 刘丽君[1] 龚树文[1] 

机构地区：[1]聊城大学化学化工学院

出　　处：《化学研究与应用》2017年第6期821-826,共6页Chemical Research and Application

基　　金：国家自然科学基金项目(21101086);聊城大学校基金项目资助

摘　　要：利用1,2,3-三氮唑-4,5-二羧酸和磷钨酸二者的水溶液在室温下混合反应,合成了1,2,3-三氮唑-4,5-二羧酸-磷钨酸(TDA-HPW)固体酸催化剂,并以环己酮和乙二醇的缩合反应为探针反应,对其催化性能进行评价。结构分析表明,TDA-HPW不仅保留有磷钨酸的Keggin结构,而且具有较强的酸强度;催化反应结果表明TDA-HPW是良好的催化合成环己酮缩乙二醇的固体酸催化剂,在较优化条件下缩酮产率可达到99.7%;TDA-HPW具有较好的重复利用性,经简单过滤回收,重复使用4次,仍具有较高的催化活性。A solid acid catalyst TDA-HPW was prepared by the reaction of 1,2,3-triazole-4,5-dicarboxylic acid（ TDA） and phosphotungstic acid（ HPW） in aqueous solutions at room temperature.Its catalytic property was evaluated in the condensation reaction of cyclohexanone and glycol.The results showed that TDA-HPW not only contained the typical Keggin structure,but also had strong acid strength.TDA-HPW exhibited excellent catalytic activity in the synthesis of cyclohexanone glycol ketal,and the 99. 7% yield was obtained under the optimal condition. TDA-HPW also presented good re-usability,suggesting that TDA-HPW was a promising heterogeneous catalyst for the synthesis of acetal or ketal.

关 键 词：1 2 3-三氮唑-4 5-二羧酸 固体酸 磷钨酸 缩酮 

分 类 号：O643.3[理学—物理化学]