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TiSiW₁₂O₄₀/TiO₂催化合成环己酮缩乙二醇

Synthesis of cyclohexanone ethylene ketal catalyzed by TiSiW₁₂ O₄0/TiO₂

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【Author】 Yang Shuijin ,Chen Luchun , Liang Yongguang ,Sun Jutang (1. Department of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002; 2. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072) , Huaxue Shiji,

【机构】湖北师范学院化学与环境工程系；武汉大学化学与分子科学学院黄石 435002 武汉大学化学与分子科学学院；武汉 430072；黄石 435002；武汉 430072；

【摘要】报道了以固载杂多酸盐TiSiW₁₂O₄₀/TiO₂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TiSiW₁₂O₄₀/TiO₂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:TiSiW₁₂O₄₀/TiO₂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％。更多还原

【Abstract】 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%.更多还原