The effect of different catalysts, reaction temperature and calcination temperature on the performance of the catalyst for synthesis of a-tetralone by intramolecular acylation of 4-phenyIbutyric acids in fixed bed were investigated. The results showed that H-Beta zeolite which was calcined at 900℃ exhibited high activity and stability in the reaction. The average conversion of 4-phenylbutyric acid was 98.0% and the average yield of a-tetralone was 81.2% after reaction 10 h at 220 ℃.%在固定床连续流动条件下,以4-苯基丁酸为原料,经分子内酰化反应合成α-四氢萘酮,考察了不同催化剂,反应温度和焙烧温度对催化剂性能的影响.结果表明,在900℃焙烧处理后的H-Beta分子筛对该反应具有较好的催化活性和稳定性,在220℃连续反应10h,4-苯基丁酸的平均转化率达98.0％,α-四氢萘酮的平均得率为81.2％.
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