| 镧助剂对铜硅催化剂结构及其甘油氢解性能影响研究 |
| |
| 引用本文： | 左建良,黄志威,崔芳,陈静,夏春谷.镧助剂对铜硅催化剂结构及其甘油氢解性能影响研究[J].分子催化,2010,24(3). |
| |
| 作者姓名： | 左建良 黄志威 崔芳 陈静 夏春谷 |
| |
| 作者单位： | 1. 中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000;中国科学院研究生院,北京,100049
2. 中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃,兰州,730000 |
| |
| 摘 要： | 在沉淀凝胶法制备的Cu/SiO2催化剂中采用浸渍法添加La助剂,制备了一系列不同La含量的Cu-La2O3/SiO2催化剂,利用BET、XRD、TPR、XPS和TEM对催化剂进行了系统表征,并在高压反应釜中对其进行了甘油氢解制备1,2-丙二醇活性评价,研究了La含量对催化剂高温热稳定性及甘油氢解活性的影响.结果表明:适量La的引入能明显抑制催化剂的高温烧结,维持催化剂的大比表面及活性组分的高分散,提高催化剂的结构稳定性;同时对减少反应过程中活性组分的流失也有很好的效果.铜镧之间存在着协同作用,经高温焙烧后得到加强,对Cu/SiO2催化剂的甘油氢解活性有很好的促进作用.
|
| 关 键 词： | 助剂 甘油氢解 |
| 收稿时间： | 3/1/2010 12:00:00 AM |
| 修稿时间： | 2010/4/27 0:00:00 |
Structure and Activity Effect of La on Cu/SiO2 Catalyst for Hydrogenolysis of Glycerol |
| |
| ZUO Jian-liang,HUANG Zhi-wei,CUI Fang,CHEN Jing,XIA Chun-gu.Structure and Activity Effect of La on Cu/SiO2 Catalyst for Hydrogenolysis of Glycerol[J].Journal of Molecular Catalysis (China),2010,24(3). |
| |
| Authors: | ZUO Jian-liang HUANG Zhi-wei CUI Fang CHEN Jing XIA Chun-gu |
| |
| Institution: | ZUO Jian-liang1,2,HUANG Zhi-wei1,CUI Fang1,CHEN Jing1,XIA Chun-gu1 (1. State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China,2. Graduate UniVersity of Chinese Academy of Sciences,Beijing 100039,China) |
| |
| Abstract: | A series of Cu-La2O3/SiO2 catalysts with different la loading was synthesized by impregantion of the mother Cu/SiO2 catalyst prepared by pricipitate-gel method. The physical and chemical properties of the catalysts were investigated by the techniques of N2 adsorption-desorption,X-ray diffraction (XRD),temperature-programmed reduction (TPR),and X-ray photoelectron spectroscopy (XPS) and Transmission electron microscopy(TEM). The catalytic performance for hydrogenolysis of glycerol was studied in a stainless ... |
| |
| Keywords: | La Cu/SiO2 |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《分子催化》浏览原始摘要信息 |
| 点击此处可从《分子催化》下载免费的PDF全文 |
|
