| 应用光电子能谱对一种负载型非茂催化剂结构的表征 |
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| 引用本文： | 程薇,赵伟,许学翔,景振华. 应用光电子能谱对一种负载型非茂催化剂结构的表征[J]. 化工进展, 2005, 24(8): 881-884 |
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| 作者姓名： | 程薇 赵伟 许学翔 景振华 |
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| 作者单位： | 石油化工科学研究院,北京,100083;石油化工科学研究院,北京,100083;石油化工科学研究院,北京,100083;石油化工科学研究院,北京,100083 |
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| 摘 要： | 通过吡啶吸附红外光谱和光电子能谱对负载型非茂催化剂CpTi（dbm）Cl2的载体和催化剂的结构进行了表征，发现MgCl2／高岭土双载体表面存在大量强L酸中心；经双载体负载后的CpTi（dbm）Cl2中Ti 2p的电子结合能增加了0．6～0．65eV。分析结果表明，Mg对Ti的电子效应以及载体中MAO对CpTi（dbm）Cl2的预活化作用是促使负载后活性提高的重要原因。
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| 关 键 词： | 非茂 负载 催化剂 乙烯 聚合 表征 |
| 文章编号： | 1000-6613（2005）08-0881-04 |
| 收稿时间： | 2005-04-08 |
| 修稿时间： | 2005-06-06 |
Characterization of Supported Non-Metallocene Catalyst with XPS |
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| Cheng Wei,Zhao Wei,Xu Xuexiang,Jing Zhenhua. Characterization of Supported Non-Metallocene Catalyst with XPS[J]. Chemical Industry and Engineering Progress, 2005, 24(8): 881-884 |
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| Authors: | Cheng Wei Zhao Wei Xu Xuexiang Jing Zhenhua |
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| Abstract: | The structures of supported CpTi(dbm)Cl_2 and the supports were characterized with pyridine adsorptiondesorption IR and XPS. It was discovered that there were a lot of strong Lewis acid on the surface of the MgCl_2/kaolin bisupport and the binding energy of Ti 2p in (CpTi)(dbm)Cl_2 was increased by 0.6~0.65 eV after it was supported on the bisupport. The (analysis) result showed that both the (electron) effect of Mg on Ti and the preactivation of CpTi(dbm)Cl_2 by MAO in the bisupport (contributed) a lot to the increase of activity after the catalyst was supported. |
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| Keywords: | non- metallocene supported ethylene polymerization catalyst characterization |
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