纳米SO_4^(2-)/SnO_2固体超强酸催化合成环己酮1,2-丙二醇缩酮  

Synthesis of cyclohexanone 1,2-propanediol ketal catalyzed by nanoparticle SO_4^(2-)/SnO_2 solid superacid

作　　者：余济伟[1] 高文艺[1] 任立国[1] 

机构地区：[1]辽宁石油化工大学材料科学与工程系,辽宁抚顺113001

出　　处：《工业催化》2006年第10期44-48,共5页Industrial Catalysis

基　　金：辽宁省教育厅资助项目(05L299)

摘　　要：报道了以SnCl4.5H2O为原料和十六烷基三甲基溴化铵为模板剂,采用模板法合成纳米SO42-/SnO2固体超强酸催化剂。用XRD和TG-DTA进行了表征,以环己酮和1,2-丙二醇的缩合反应为探针反应,探讨了SO42-/SnO2固体超强酸的催化活性,较系统地研究了焙烧温度、反应时间、酮醇物质的量比、带水剂的用量和催化剂的用量等对反应的影响以及催化剂的稳定性。结果表明,SO42-/SnO2固体超强酸催化剂具有纳米大小,在环己酮1,2-丙二醇缩酮的合成具有良好的催化活性和稳定性。在最佳条件下,缩酮的产率可达97.2%,纯度(质量分数)为99.2%。Nanoparticle SO4^2-/SnO2 solid superacid was synthesized using SnCl4·5H2O and cetyltrimethyl ammonium bromide（ CTAB） as the template, and characterized by XRD and TG-DTA. Cyclohexanone 1,2-propanediol ketal was synthesized from cyclohexanone and l, 2-propanediol over the catalyst. The influence of catalyst calcination temperature, reaction time, mole ratio of reactants, quantity of water-carrying agent and catalyst dosage were investigated. The results showed that SO4^2-/SnO2 .solid superacid catalyst, with nanoparticle size, exhibited excellent activity and stability in the synthesis of cyclohexanone 1,2-propanediol ketal, with yield of 97.2% and cyclohexanone 1,3- propanediol ketal purity of 99.2 % under the optimum condition.

关 键 词：纳米固体超强酸 SO4^2-/SnO2 环己酮1 2-丙二醇缩酮 催化缩合 

分 类 号：TQ426.94[化学工程] TQ224.4