以活性碳为载体，通过浸渍法制备了H9P2W15V3／C催化剂，对催化剂进行Uv-Vis、FT-IR表征。以对羟基苯甲酸丁酯的合成反应为探针，考察了催化剂的催化性能。研究了磷钨钒杂多酸负载量、催化剂用量、醇酸比、反应时间和反应温度对反应的影响。通过单因素实验和正交实验确定了反应的最佳条件：杂多酸负载量为30％，催化剂用量8．7％（按反应体系总质量计算），醇酸摩尔比2：1，反应时间3h，反应温度125℃，酯化率可达91．30％。催化重复使用5次，酯化率仍可达76．42％。%Tungstovanadophosphoric heteropoly acid with tri-vanadium-substituted Dawson structure supported on activated carbon was prepared by impregnation method and characterized by FT-IR, Uv-Vis. The catalytic performance in synthesis of butyl p-hydroxy benzoate was investigated.The main effects of the reaction were optimized with simple and orthogonal fact experiments.The optimized conditions were as follows： the supported quantity was 30% ,the mass ratio of the catalyst to total reactant was 8.7%,the molar ratio of n-butyl alcohol to p-hydroxy benzoic acid was 2： 1, the reaction time was 3h, the reaction temperature was 125℃.Yield of butyl p-hydroxy benzoate could reach 9L30% under the optimum conditions.The catalyst could be reused for 5 times and the isolated yield of butyl p-hydroxy benzoate was still above 76.42%.
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