| MK_(101)催化剂受热结构及活性变化 |
| |
| 引用本文： | 何刚.MK_(101)催化剂受热结构及活性变化[J].材料工程,2010(2). |
| |
| 作者姓名： | 何刚 |
| |
| 作者单位： | 南京信息工程大学,环境科学与工程学院,南京,210044 |
| |
| 基金项目： | 南京信息工程大学基金资助项目(20080314);;国家自然科学基金资助项目(50573032) |
| |
| 摘 要： | 采用化学分析、电子能谱仪、X射线衍射仪和吸附仪等方法,对由热产生的甲醇催化剂MK101的结构和活性变化进行研究。结果表明:实验室高温加热可使催化剂晶粒度增大,比表面积下降31%,平均孔径增大21%,孔容下降22.2%;工业使用的催化剂晶粒度增大,比表面积下降38.2%~56.4%,平均孔径增大21%,孔容下降51.4%~57.9%。实验室强热实验后的催化剂与工业使用后的催化剂在结构和活性变化的趋势上相同,比表面积减小和催化活性降低。实验室耐热实验对催化剂小孔径影响小,对大孔径影响大,并生成更多的大孔;而工业使用后的催化剂,对小孔的影响大,对大孔径影响小,使大量小孔变大,小孔的比率明显减小;伴随的结果是催化剂的活性下降和丧失。
|
| 关 键 词： | 甲醇催化剂 受热 结构 活性 |
The Changes of MK_(101) Catalyst Structure and Activity Leaded by Heat |
| |
| HE Gang.The Changes of MK_(101) Catalyst Structure and Activity Leaded by Heat[J].Journal of Materials Engineering,2010(2). |
| |
| Authors: | HE Gang |
| |
| Affiliation: | College of Environmental Science and Engineering;Nanjing University of Information Science and Technology;Nanjing 210044;China |
| |
| Abstract: | The chemical analysis,electron spectroscopy,X-ray diffraction,absorption instrument and so on,be used to research MK101 methanol catalyst structure and activity.The results showed that: Laboratory catalyst heated to high temperatures can increase the grain size,decreased specific surface area 31%,increased average pore diameter 21%,decreased pore volume 22.2%;industrial catalyst after use also increased the grain size,decreased specific surface area 38.2%-56.4%,increased average pore diameter 21%,decreased ... |
| |
| Keywords: | methanol catalyst heated structure activity |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
