| 钴基费-托合成催化剂上CO、H2的吸附行为 |
| |
| 引用本文： | 陈建刚,相宏伟,董庆年,王秀芝,孙予罕.钴基费-托合成催化剂上CO、H2的吸附行为[J].物理化学学报,2001,17(2):161-164. |
| |
| 作者姓名： | 陈建刚 相宏伟 董庆年 王秀芝 孙予罕 |
| |
| 作者单位： | The State Key Labortory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001 |
| |
| 基金项目： | 国家重点基础研究发展规划资助项目(G199022402) |
| |
| 摘 要： | 采用程序升温脱附及FT IR技术考察了CO、H2在钴基催化剂上的吸附行为.H2 TPD表明,Co/SiO2催化剂有两类脱附氢,引入锆助剂后,低温脱附氢量明显增加,高温吸附氢量下降.CO TPD及吸附态CO的红外光谱表明锆助剂使CO在钴催化剂上的吸附强度减弱,但其吸附量增大.钴基催化剂的费 托合成反应性能可以用吸附态物种的变化来解释.
|
| 关 键 词： | 费-托合成 钴基催化剂 锆助剂 表面吸附物种 红外光谱 |
| 收稿时间： | 2000-06-12 |
| 修稿时间： | 2000年6月12日 |
H2 or CO
Chemsorption on Co-based Catalysts for F-T Synthesis |
| |
| Chen Jian-Gang.H2 or CO
Chemsorption on Co-based Catalysts for F-T Synthesis[J].Acta Physico-Chimica Sinica,2001,17(2):161-164. |
| |
| Authors: | Chen Jian-Gang |
| |
| Institution: | The State Key Labortory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001 |
| |
| Abstract: | Both Co/SiO2 and Co/ZrO2/SiO2 catalysts for F T synthesis were characterized by temperature programmed desorption (TPD) and FT IR spectra.H2 TPD evidenced that there were two H2 desorption peaks over Co/SiO2 catalyst and that the amount of H2 adsorption decreased upon introduction of ZrO2.CO TPD and CO IR showed that addition of ZrO2 weakened the intensity of CO adsorption but increased the amount of adsorbed CO.In F T synthesis,ZrO2 promoter enhanced the formation of heavy hydrocarbons in addition to keeping high activity.Such a shift of product array to heavier hydrocarbon was related to the increase of surface H2/CO ratio. |
| |
| Keywords: | F-T synthesis Co-based catalysts ZrO2 promoter Surface adsorption FT-IR spectra |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
| 点击此处可从《物理化学学报》下载免费的PDF全文 |
