TiSiW_(12)O_(40)/TiO_2催化合成环己酮缩乙二醇  

Synthesis of cyclohexanone ethylene ketal catalyzed by TiSiW_(12) O_40/TiO_2

作　　者：杨水金[1] 陈露春[1] 梁永光[1] 孙聚堂[2] 

机构地区：[1]湖北师范学院化学与环境工程系,黄石435002 [2]武汉大学化学与分子科学学院,武汉430072

出　　处：《化学试剂》2003年第2期100-102,110,共4页Chemical Reagents

基　　金：国家自然科学基金(No.29971024);湖北省自然科学基金(No.99J064)

摘　　要：报道了以固载杂多酸盐TiSiW_(12)O_(40)/TiO_2为多相催化剂,通过环己酮和乙二醇反应合成了环己酮缩乙二醇,探讨TiSiW_(12)O_(40)/TiO_2对缩酮反应的催化活性,较系统地研究了酮醇物质的量比,催化剂用量,反应时间诸因素对产品收率的影响。实验表明:TiSiW_(12)O_(40)/TiO_2是合成环己酮缩乙二醇的良好催化剂,在n_醇:n_醇=1:1.5,催化剂用量为反应物料总质量的0.6％,环己烷为带水剂,反应时间40min的优化条件下,环己酮缩乙二醇的收率可达93.8％。Cyclohexanone ethylene ketal was synthesized from cyclohexanone and ethylene glycol in the presence of TiSiW12 O40/TiO2. The factors influencing the synthesis were discussed and the best conditions were found out. The optimum conditions are;molar ratio of cyclohexanone to ethylene glycol was 1:1. 5,the amount of catalyst was 0. 6% of the feed stock,the reaction temperature was 88-109℃,and the reaction time was 40 min. TiSiW12 O40/ TiO2 was an excellent catalyst for synthesizing cyclohexanone ethylene ketal and its yield can reach up to over 93.8%.

关 键 词：TISIW12O40/TIO2 催化合成 环己酮缩乙二醇 固载杂多酸盐 多相催化剂 二氧化钛 缩酮反应 

分 类 号：O623.4[理学—有机化学] O623.51[理学—化学]