应用新型复合型固体催化剂 SO4 2 - /Al2 (Fe2 O4 ) 3作为环己醇的脱水剂 ,成功地制备了环己烯 ,并对催化剂用量 ,反应温度和反应时间的影响进行了探讨 ,实验结果表明 :SO4 2 - /Al2 (Fe2 O4 ) 3是环己醇脱水制备环己烯的良好催化剂 ,且反应时间短 ,后处理容易 ,催化剂用量少 ,可重复使用 ,收率高。脱水反应的最佳工艺条件为 :催化剂用量为环己醇质量的 6% ,反应温度为 1 5 0℃ ,Al/Fe=1 :2 (摩尔比 ) ,反应时间为 0 .9h The new compound solid catalyst SO4 2 - / Al2 (Fe2 O4) 3 was used as dehydrating agent of cyclohexanol to prepare cyclohexene successfully. The effects of catalyst amount, reaction temperature and reaction time were discussed. The experimental results The results show that SO42- / Al2 (Fe2O4) 3 is a good catalyst for the dehydration of cyclohexanol to cyclohexene. The reaction time is short, the post-treatment is easy, the amount of catalyst is less, the dosage can be reused and the yield is high. The optimum conditions for the dehydration reaction are as follows: the amount of catalyst is 6% of the mass of cyclohexanol, the reaction temperature is 150 ℃, the molar ratio of Al / Fe is 1: 2, the reaction time is 0.9h