Abstract: Supported solid base catalyst KF/CaO/carclazyte for biodiesel preparation was prepared by co-mixture impregnation technology. Effects of catalyst preparation conditions on catalytic activities were studied. The structure and properties of the catalyst were characterized by SEM，TEM and BET. The optimal conditions to prepare catalyst are：mass ratio of carclazyte to CaO is 3∶7，KF loading is 20%，calcination temperature is 873 K，calcination time is 4 h. Thus prepared catalyst brings about more than 96% biodiesel yield from sapium sebferum seed oils. The catalyst characterization showed that the catalyst has a multiporous netlike structure with a particulate diameter of 30－100nm，an average pore size of 43 nm and a specific surface area of 113.9 m2/g.

摘要： 以共混/浸渍法制备复合负载型固体碱催化剂KF/CaO/陶土，考察了催化剂制备条件对催化活性的影响，以SEM、TEM、BET等手段对催化剂进行了表征。结果表明：焙烧温度为600 ℃，焙烧时间为4 h，陶土与CaO质量比为3∶7，浸渍剂KF占陶土与CaO总质量的20%时，催化乌桕籽油制备生物柴油的收率可达96%以上。催化剂结构表征显示，该催化剂呈多孔网状结构，粒径主要分布在30～100 nm，平均孔径分布为43 nm，表面积为113.9 m2/g。