催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (6): 695-700.

• 研究论文 • 上一篇    下一篇

高分散 Ru/MMT 催化剂的制备及其催化喹啉加氢性能

周丽梅1,2, 付海燕1, 李强1, 陈华1 , 李瑞祥1, 李贤均1   

  1. 1 四川大学化学学院有机金属络合催化研究所, 教育部绿色化学及技术重点实验室, 四川成都 6100642 西华师范大学化学化工学院, 四川南充 637002
  • 收稿日期:2010-06-25 出版日期:2010-06-25 发布日期:2013-12-05

Preparation of Highly Dispersed Ru/MMT Catalyst and Its Catalytic Activity for Quinoline Hydrogenation

ZHOU Limei1,2, FU Haiyan1, LI Qiang1, CHEN Hua1,*, LI Ruixiang1, LI Xianjun1   

  1. 1Key Laboratory of Green Chemistry and Technology of the Ministry of Education, Institute of Homogeneous Catalysis, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China2Department of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, Sichuan, China
  • Received:2010-06-25 Online:2010-06-25 Published:2013-12-05

PDF

1088

被引次数

42

摘要： 通过简单的离子交换法制备出高分散的蒙脱土 (MMT) 负载 Ru 催化剂, 采用 X 射线衍射、X 射线光电子能谱、程序升温还原和高分辨透射电子显微镜等手段对催化剂进行了表征. 结果表明, 金属 Ru 在蒙脱土层间高度分散, Ru 的平均粒径约 2 nm. 在喹啉加氢反应中, 该催化剂显示出很高的反应活性和选择性. 在 2 MPa 和 60 °C 的温和条件下, 以水为溶剂时, Ru/MMT 催化喹啉加氢生成 1,2,3,4-四氢喹啉的选择性高于 96.4%, 喹啉转化率达 99.2%. 当温度升高到 140 °C、压力增加到 3 MPa 时, 不需要补加催化剂就可以将喹啉一步加氢生成十氢喹啉, 选择性高达 98.1%.

关键词: 蒙脱土, 钌, 多相催化, 喹啉, 加氢, 1;2;3;4-四氢喹啉, 十氢喹啉

Abstract: A highly dispersed montmorillonite-supported Ru catalyst (Ru/MMT) was prepared by the ion-exchange method and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, temperature-programmed reduction, and high resolution transmission electron microscopy. The results showed that Ru was well dispersed on the montmorillonite interlayers, and the average size of Ru particles was about 2 nm. The catalyst exhibited high activity in the hydrogenation of quinoline under the mild reaction conditions (60 °C, 2 MPa H2, and H2O as solvent). The conversion of quinoline was 99.2% and the selectivity for 1,2,3,4-tetrahydroquinoline was 96.4%. When the temperature and hydrogen pressure were increased to 140 °C and 3 MPa, respectively, quinoline could be directly hydrogenated to decahydroquinoline with the selectivity up to 98.1%.

Key words: montmorillonite, ruthenium, heterogeneous catalysis, quinoline, hydrogenation, 1, 2, 3, 4-tetrahydroquinoline, decahydroquinoline