采用共沉淀法制备复合催化剂ZrO2?TiO2，对其晶体形态、形貌、比表面积、孔性质、酸性质进行了表征，考察了其对柠檬酸与正丁醇酯化反应的催化性能. 结果表明，复合物中ZrO2含量为25%(?)时，ZrO2?TiO2呈无定型形态，比表面积为239.6 m2/g，兼具B酸和L酸，NH3吸附量为670 μmol/g. 25% ZrO2?TiO2对柠檬酸与正丁醇酯化反应催化效果最好，柠檬酸转化率最大，为96.6%，柠檬酸正三丁酯的选择性为98.2%，适宜的反应条件为反应温度115℃，反应时间90 min，反应5次后柠檬酸转化率保持80%以上，柠檬酸三丁酯选择性约为98%.

ZrO2?TiO2 composite catalysts were prepared by method of coprecipitation. The crystal morphologies of samples were characterized, specific surface area and pore size distribution of samples were identified, the acid properties of catalysts were identified, and catalytic performances were investigated by esterification of citric acid with n-butyl alcohol. The results showed that when ZrO2 was 25%(?) among the complex oxide, sample ZrO2?TiO2 was shown amorphous, its specific surface area of 239.6 m2/g, with B acid and L acid centres for NH3 adsorption capacity of 670 μmol/g. Esterification of citric acid with n-butyl alcohol was investigated over 25%ZrO2?TiO2 as catalyst. The conversion rate of citric acid reached to 96.6% and selectivity of trbutyl citrate exhibited is 98.2% while the suitable reaction conditions are reaction temperature of 115℃ and balanced time of 90 min. After reaction 5 times, conversion rate of citric acid keeps higher than 80%, and selectivity of tributyl citrate is about 98%.