| 稀土三元催化剂对二氧化碳/环氧化合物共聚反应的催化机理研究 |
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| 引用本文： | 闵加栋,张亚明,陈玉岩,王献红,赵晓江,王佛松. 稀土三元催化剂对二氧化碳/环氧化合物共聚反应的催化机理研究[J]. 高分子学报, 2009, 0(3): 233-237. DOI: 10.3724/SP.J.1105.2009.00233 |
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| 作者姓名： | 闵加栋 张亚明 陈玉岩 王献红 赵晓江 王佛松 |
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| 作者单位： | 1. 中国科学院长春应用化学研究所,高分子物理与化学国家重点实验室,长春,130022;中国科学院研究生院,北京,100039
2. 中国科学院长春应用化学研究所,高分子物理与化学国家重点实验室,长春,130022 |
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| 摘 要： | 采用X射线光电子能谱(XPS)技术研究了二氧化碳与环氧丙烷共聚反应的稀土三元催化剂,探讨了中心金属的X射线光电子能谱与催化活性间的关系,指出稀土三元催化剂的活性中心在于配位活化后的锌氧键,稀土盐通过与烷氧基锌形成双金属桥键,改变了活性中心的电子云分布,从而提高了反应活性.
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| 关 键 词： | 二氧化碳 共聚 稀土 X射线光电子能谱 机理 |
| 收稿时间： | 2008-06-10 |
CATALYTIC MECHANISM OF TERNARY RARE-EARTH-MATAL COORDINATION CATALYSTS IN THE COPOLYMERIZATION OF CARBON DIOXIDE AND EPOXIDE |
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| MIN Jiadong,ZHANG Yaming,CHEN Yuyan,WANG Xianhong,ZHAO Xiaojiang,WANG Fosong. CATALYTIC MECHANISM OF TERNARY RARE-EARTH-MATAL COORDINATION CATALYSTS IN THE COPOLYMERIZATION OF CARBON DIOXIDE AND EPOXIDE[J]. Acta Polymerica Sinica, 2009, 0(3): 233-237. DOI: 10.3724/SP.J.1105.2009.00233 |
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| Authors: | MIN Jiadong ZHANG Yaming CHEN Yuyan WANG Xianhong ZHAO Xiaojiang WANG Fosong |
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| Affiliation: | 1;2;~1 Polymer Material and Engineering Laboratory;Changchun Insititute of Applied Chemistry;Chinese Academy of Sciences;Changchun 130022;~2 Graduate School of Chinese Academy of Science;Beijing 100039 |
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| Abstract: | Ternary rare earth metal coordination catalysts prepared from Y(CCl_3COO)_3,glycerin,and ZnEt_2 were confirmed to be effective for the copolymerization of carbon dioxide and various epoxides.Whereas their precise modification was hampered by the lack of insight into active centers.Here an X-ray photoelectron spectroscopy(XPS) technique was employed to study the interaction of various components,especially the central metal atoms in these catalysts.Copolymerization experiments with typical conditions were al... |
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| Keywords: | Carbon dioxide Copolymerization Rare-earth-metal XPS Mechanism |
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