A series of acid-activated catalyst were prepared by activating TiO₂ using different acids, and subsequent catalytic performance was evaluated for isomerization of alpha pinene. The prepared catalysts were also characterized using SEM, XRD, FTIR, TPD and BET methods to understand the effect of type of acid on the catalyst characteristics. It was demonstrated that catalyst surface area and total acidity increased with acid activation of the raw TiO₂ catalyst. The influence of type of acid used for activation, operating temperature, catalyst amount and reaction time on the conversion of alpha pinene and selectivity of products was examined, also presenting kinetic and thermodynamic analysis. At optimized conditions, complete conversion of alpha pinene was observed with the higher selectivity towards products as camphene, carene and tricyclene, with higher commercial importance. The current work clearly demonstrated that activated catalyst gives highest conversion of alpha pinene and selectivity for bicyclic monoterpenes.

通过使用不同的酸活化TiO ₂制备了一系列酸活化催化剂，并评估了后续对α蒎烯异构化的催化性能。还使用 SEM、XRD、FTIR、TPD 和 BET 方法对制备的催化剂进行了表征，以了解酸类型对催化剂特性的影响。结果表明，催化剂表面积和总酸度随着原料 TiO _{2 的}酸活化而增加催化剂。考察了用于活化的酸类型、操作温度、催化剂用量和反应时间对α蒎烯转化率和产物选择性的影响，并进行了动力学和热力学分析。在优化条件下，观察到 α 蒎烯完全转化，对莰烯、蒎烯和三环烯等产品具有更高的选择性，具有更高的商业重要性。目前的工作清楚地表明，活化的催化剂可提供最高的 α 蒎烯转化率和双环单萜的选择性。