TiSiW_(12)O_(40)/TiO_2催化合成丁醛缩1,2-丙二醇  

CATALYTIC SYNTHESIS OF BUTYRALDEHYDE 1,2-PROPANEDIOL ACETAL BY TiSiW_(12)O_(40)/TiO_2

作　　者：王冬明[1] 余协卿[1] 杨水金[1] 

机构地区：[1]湖北师范学院化学与环境工程系,黄石435002

出　　处：《精细石油化工》2004年第4期10-12,共3页Speciality Petrochemicals

基　　金：湖北省教育厅重点科研基金(2002A00008)

摘　　要：报道了以TiSiW_(12)O_(40)/TiO_2为多相催化剂,通过丁醛和1,2-丙二醇反应合成丁醛缩1,2-丙二醇。探讨了TiSiW_(12)O_(40)/TiO_2对缩醛反应的催化活性,较系统地研究了原料用量、催化剂用量、反应时间等诸因素对收率的影响。结果表明:TiSiW_(12)O_(40)/TiO_2是合成丁醛缩1,2-丙二醇的良好催化剂,在n(丁醛):n(1,2-丙二醇)=1:1.5,催化剂用量为反应物料总质量的0.5％,环己烷为带水剂,反应时间1.0 h的条件下,丁醛缩1,2-丙二醇的收率可达96.3％。Butyraldehyde 1,2-propanediol acetal was synthesized from butyraldehyde and 1,2-propanediol in the presence of TiSiW_(12)O_(40)/TiO_2. The factors influencing the synthesis were discussed and the optimum conditions were found as follows: molar ratio of butyraldehyde to 1,2-propanediol is 1: 1.5, the mass percent of catalyst is 0.5% of feed stocks, and the reaction time is 1.0 h. TiSiW_(12)O_(40)/TiO_2 is an excellent catalyst for synthesizing butyraldehyde 1,2-propanediol acetal and the yield could be up to reach 96.3%.

关 键 词：TISIW12O40/TIO2 丙二醇 丁醛 催化合成 催化剂用量 反应时间 多相催化剂 反应合成 催化活性 缩醛反应 反应物料 总质量 带水剂 环己烷 收率 

分 类 号：TQ223.162[化学工程—有机化工] O623.624[理学—有机化学]