固体超强酸催化剂SO42-TiO2-MoO3的制备及其催化合成缩醛(酮).pdf

Chinese J．Chem．Eng．，13(1)51—55(2005) of Solid andIts Superacid Preparationso主一／Ti02一M003 Ketalation木 inAcetalationand CatalyticActivity YANG and Shuijin(杨水金)8，”，LIANGYongguang(梁永光)8一，Yuxieqing(余协卿)8 SUN。Jutang(孙聚堂)6 8 of andEnvironmental Normal DepartmentChemistry Engineering，HubeiUniversity,Huangshi435002，China b of andMolecular CollegeChemistry Sciences，WuhanUniversity,Wuhan430072，China Abstract novelsolid been andits atdifferent superacid，hasprepared catalyticactivity soX一／Ti02-M003，a conditionswasexaminedwithesterificationofn．butanoicacidand alcoholas reaction． synthetic n．butyl probing mass usedinthe is The conditionswerealsofound，thatis，the ratioof 25％，the optimum M003 compound calcination 450。C．andthesoaked of is0．5mol·L—1．Thenitwas inthe temperature consistencyH2S04 applied ofsix ketalsandacetalsas andrevealed Mmilar catalyticsynthesis important catalyst highcatalyticactivity．Under theconditionthatthemolarratioof to was1：1．5．themassratioofthe tothe aldehyde／ketoneglycol catalyst was thereactiontime1．0 ofketalsandacetalsreachedto63．2％．The reactants0．5％and h，the up catalyst yield canbe recoveredan