【摘要】 采用混合沉淀过饱和浸渍法制备Mo O₃/Zr O₂-Ti O₂固体酸催化剂.以催化水解CFC-12（CCl₂F₂）的转化率90%作为评价标准,考察并优化浸渍液浓度、浸渍时间、浸渍温度、焙烧温度、焙烧时间等催化剂制备条件.结果表明,催化剂的最佳制备条件为:钛锆摩尔比为7∶3,浸渍液浓度为0.25 mol/L,浸渍时间6 h,浸渍温度60℃,焙烧温度500℃.对催化剂进行XRD、SEM、EDS表征,结果表明该方法合成的催化剂为纯相,主要结构为四方晶相的Zr（Mo O₄）₂掺杂锐钛型的Ti O₂,稳定性较好,是催化水解CFC-12良好的催化剂.更多还原

【Abstract】 The co-precipitation over saturated impregnation method was used to prepare Mo O₃/Zr O₂-Ti O₂solid acid catalyst.The catalytic conversion rate of CFC-12（CCl₂F₂）90%was used as the evaluation criteria.The preparation conditions of the catalyst were optimized by the immersion liquid concentration,impregnation time and temperature,calcination temperature.The results show that the best preparation conditions were as follows:n（Ti）∶n（Zr）is 7∶3,the immersion liquid concentration of（NH₄）₆Mo₇O₂₄·4H₂O 0.25 mol/L,the impregnation time is 6 h,impregnation temperature is 60℃,the calcination temperature is 500℃.The catalysts were characterized by XRD,SEM and EDS.The results show that the main phase of solid Mo O₃/Zr O₂-Ti O₂catalyst is the tetragonal Zr（Mo O₄）₂that doped Ti O₂ of anatase.Stability is good,it is a good catalyst for catalytic hydrolysis of CFC-12.更多还原