催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (7): 1138-1142.DOI: 10.1016/S1872-2067(10)60244-6

• 研究快讯 • 上一篇    下一篇

固载化 AlCl3 催化剂上 α-蒎烯异构化反应

吴义辉, 田福平*, 贺民, 蔡天锡   

  1. 大连理工大学化学学院精细化工国家重点实验室, 辽宁大连 116024
  • 收稿日期:2011-04-15 修回日期:2011-05-16 出版日期:2011-07-18 发布日期:2014-11-28

Isomerization of α-Pinene over Immobilized AlCl3 Catalysts

WU Yihui, TIAN Fuping*, HE Min, CAI Tianxi   

  1. State Key Laboratory of Fine Chemicals, Institute of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, China
  • Received:2011-04-15 Revised:2011-05-16 Online:2011-07-18 Published:2014-11-28

PDF

1027

摘要： 分别以 SiO2 和 γ-Al2O3 为载体采用两步气相法制备了固载化 AlCl3 催化剂, 并首次将其用于 α-蒎烯液相异构化反应. 结果表明, 该催化剂对 α-蒎烯异构化反应具有非常高的催化活性, 其中 AlCl3/SiO2 催化剂在 40 oC 反应时 α-蒎烯转化率和主产物 (莰烯、柠檬烯和异松油烯) 选择性分别为 98.4% 和 93.7%; AlCl3/γ-Al2O3 催化剂活性更高, 在 30 oC 反应时, 即可获得 95.5% 的 α-蒎烯转化率和 94.4% 的主产物选择性. 固载化 AlCl3 催化剂的高活性与其强酸性有关.

关键词: 固载化, 三氯化铝, α-蒎烯, 异构化, 硅胶, 氧化铝

Abstract: Immobilized AlCl3 catalysts supported on γ-Al2O3 and SiO2 were prepared by a two-step vapor method and their catalytic activities were evaluated by the liquid phase isomerization of α-pinene for the first time. The results showed that the immobilized AlCl3 catalyst gave excellent catalytic performance for the isomerization of α-pinene. The AlCl3/SiO2 catalyst gave 98.4% conversion of α-pinene and 93.7% selectivity for the main products such as camphene, limonene, and terpinolene at a reaction temperature of 40 °C. The AlCl3/γ-Al2O3 catalyst gave much higher activity, 95.5% conversion of α-pinene and 94.4% selectivity for the main products even at temperatures as low as 30 °C. The excellent catalytic performance of the immobilized AlCl3 catalysts is due to their strong acidity.

Key words: immobilization, aluminum chloride, α-pinene, isomerization, silica, alumina