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| 丙烯在镍离子高分散催化剂上反应过程的TPSR EPR XPS UV-DRS研究 | |
| 引用本文： | 罗继忠,菅盘铭,李轶,向松,王秋莹,寇元,张兵,余长春.丙烯在镍离子高分散催化剂上反应过程的TPSR EPR XPS UV-DRS研究[J].兰州大学学报(自然科学版),2000,36(2):59-66. |
| 作者姓名： | 罗继忠 菅盘铭 李轶 向松 王秋莹 寇元 张兵 余长春 |
| 作者单位： | 1. 兰州大学,化学化工学院,甘肃,兰州,730000 2. 扬州大学理学院 3. 中国科学院,兰州化学物理研究所,甘肃,兰州,730000 |
| 基金项目： | 厦门大学固体表面物理化学国家重点实验室!(9507)资助项目 |
| 摘 要： | 用ＴＰＳＲ法对丙烯在硫酸镍高分散型催化剂上反应过程进行考察；用ＮＨ３－ＴＰＤ法对ＮＨ３吸附中心进行跟踪，发现除强弱两类酸中心外，确有第三类活性中心，此第三类活性中心可能就是配位催化活性中心。 |
| 关 键 词： | 丙烯 TPSR EPR 齐聚反应 镍离子高分散催化剂 |
| 修稿时间： | 1998-11-12 |
Studies on the Reaction of Propylene in the Presenceof Highly Dispersed Ni2+ Catalysts by TPSR, EPR, XPS, UV-DRS |
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| Luo Jizhong,Jian Panming,Li Yi,Xiang Song,Wang Qiuying,Kou Yuan,Zhang Bing,Yu Changchun.Studies on the Reaction of Propylene in the Presenceof Highly Dispersed Ni2+ Catalysts by TPSR, EPR, XPS, UV-DRS[J].Journal of Lanzhou University(Natural Science),2000,36(2):59-66. | |
| Authors: | Luo Jizhong Jian Panming Li Yi Xiang Song Wang Qiuying Kou Yuan Zhang Bing Yu Changchun |
| Abstract: | The process of reaction of propylene in the presence of highly dispersed Ni 2 catalysts was observed. The adsorption sites of NH 3 were traced by the NH - 3 TPD technique. Along with the centers of strong and weak acids, a third active center was discovered that was possibly the center of coordination catalysis. The presence of active intermediate state of Ni was assured by EPR and XPS methods. It was found in the UV DRS spectra that new and ever changing peaks of adsorption emerged after the adsorption of propylene at various temperatures. Hence, the process of coordination catalysis was proved at least in part. |
| Keywords: | catalyst propylene oligomerization active center TPSR EPR XPS |
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