Catalytic synthesis of cyclohexanone 1,2-propanediol ketal with H_4SiW_(12)O_(40)/PAn  

作　　者：YANGShuijin YUXieqing SUNJutang 

机构地区：[1]DepartmentofChemistryandEnvironmentalEngineering,HubeiNormalUniversity,Huangshi435002,China／／CollegeofChemistryandMolecularSciences,WuhanUniversity,Wuhan430072,China [2]DepartmentofChemistryandEnvironmentalEngineering,HubeiNormalUniversity,Huangshi435002,China [3]CollegeofChemistryandMolecularSciences,WuhanUniversity,Wuhan430072,China

出　　处：《Rare Metals》2004年第4期300-305,共6页稀有金属（英文版）

基　　金：ThisworkwasfinanciallysupportedbytheNationalNaturalScienceFoundationofChina(No.20471044)NaturalScienceFoundationofHubeiProvinceEducationCommittee(Nos.2004D007and2002A00008).

摘　　要：A new environmental friendly catalyst, H_4SiW_(12)O_(40)/PAn was prepared andidentified by means of FT-IR, XRD and TG/DTA. Cyclohexanone 1,2-propanediol ketal was synthesizedfrom cyclohexanone and 1,2-propanediol in the presence of H_4SiW_(12)O_(40)/PAn The factorsinfluencing tlie synthesis were discussed and the best conditions were found out. The optimumconditions are: molar ratio of cyclohexanone to 1,2-propanediol is 1:1.4, the quantity of catalystis equal to 1.0 percent of feed stocks, and the reaction time is 40 min. H_4SiW_(12)O_(40)/PAn is anexcellent catalyst for synthesizing cyclohexanone 1,2-propanediol ketal and its yield can reachover 96.5 percent.A new environmental friendly catalyst, H_4SiW_(12)O_(40)/PAn was prepared andidentified by means of FT-IR, XRD and TG/DTA. Cyclohexanone 1,2-propanediol ketal was synthesizedfrom cyclohexanone and 1,2-propanediol in the presence of H_4SiW_(12)O_(40)/PAn The factorsinfluencing tlie synthesis were discussed and the best conditions were found out. The optimumconditions are: molar ratio of cyclohexanone to 1,2-propanediol is 1:1.4, the quantity of catalystis equal to 1.0 percent of feed stocks, and the reaction time is 40 min. H_4SiW_(12)O_(40)/PAn is anexcellent catalyst for synthesizing cyclohexanone 1,2-propanediol ketal and its yield can reachover 96.5 percent.

关 键 词：cyclohexanone 1 2-propanediol ketal 12-Tungstosilicic acid POLYANILINE CATALYST KETALATION 

分 类 号：TQ224.2[化学工程—有机化工] TQ426