采用TiO2 S2 O82 -固体超强酸催化长叶烯异构化反应 ,考察了催化剂制备方法及处理催化剂所用的 (NH4 ) 2 S2 O8溶液浓度、催化剂的焙烧温度、用量、反应温度及反应时间等对催化性能的影响 ,得出最佳反应条件。TiO2 S2 O82 -固体超强酸对长叶烯异构化反应具有很高的催化活性和选择性 ,主产物为异长叶烯 ,得率高达约 96%。 TiO2 (superscript 2 +) - solid superacid was used to catalyze longifolene isomerization. The effects of (NH4) 2 S2 O8 concentration, catalyst calcination temperature, dosage, reaction temperature and reaction time on the preparation of catalyst and the treatment of catalyst were investigated. Catalytic performance, the best reaction conditions. TiO2 S2 O82 - solid superacid has high catalytic activity and selectivity for isomerization of longifolene. The main product is isomerised alkene with a yield of about 96%.