催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (5): 471-478.

• 研究论文 • 上一篇    

Re 组分及 ZrO2 载体制备方法对 Ru-Re/ZrO2催化丙三醇氢解反应的影响

马兰 1, 2, 贺德华 1   

  1. 1清华大学化学系有机光电子与分子工程教育部重点实验室, 北京 100084 2防化指挥工程学院三系, 北京 102205
  • 出版日期:2009-05-25 发布日期:2013-02-05

Effect of Rhenium Component and Preparation Methods of ZrO2 Support on Catalytic Performance of Ru-Re/ZrO2 for Glycerol Hydrogenolysis

MA Lan1,2, HE Dehua1,*   

  1. 1Innovative Catalysis Program, Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China 2Institute of Chemical Defence, Beijing 102205, China
  • Online:2009-05-25 Published:2013-02-05

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1406

被引次数

25

摘要： 分别采用沉淀法、水热合成法和不同气氛下焙烧的方式制备了 ZrO2 载体, 采用浸渍法负载 Ru 及 Ru-Re 组分制备了 Ru/ZrO2 和 Ru-Re/ZrO2 催化剂. 利用氮气吸附-脱附、X 射线衍射、透射电镜及程序升温还原等方法对样品的比表面积、孔容、平均孔径、晶体结构、形貌及还原特性等进行了表征. 考察了 Re 组分及 ZrO2 载体制备方法对催化剂在丙三醇氢解制丙二醇反应中的催化性能的影响. 结果表明, 不同方法制备的 ZrO2 载体对负载型 Ru 催化剂的催化性能有一定影响, 其中以沉淀法在空气中焙烧制得 ZrO2 负载活性组分后得到的催化剂的活性相对较低 (转化率 18.7%) , 而以沉淀法在氮气中焙烧以及水热合成法制备的 ZrO2 负载活性组分后得到的催化剂的活性相对较高 (转化率 25.8%) . Re 组分的引入对 Ru/ZrO2 系列催化剂的催化性能有明显的促进作用.

关键词: 钌, 铼, 氧化锆, 双组分催化剂, 丙三醇, 氢解, 促进作用

Abstract: ZrO2 supports were prepared by different methods, and Ru/ZrO2 and Ru-Re/ZrO2 catalysts were prepared using these ZrO2 supports. The influence of addition of Re species and preparation methods of the ZrO2 support on the catalytic performance of Ru/ZrO2 catalysts for glycerol hydrogenolysis was investigated. The results showed that the promoting effect of addition of Re on catalytic performance of Ru/ZrO2 was obvious, and preparation methods of the ZrO2 support had some influences on the catalyst activity.

Key words: ruthenium, rhenium, dioxide zirconium, bicomponent catalyst, glycerol, hydrogenolysis, promoting effect