| 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].中国新闻周刊,2009(2). |
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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： | 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 中国科学院研究生院 |
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| 基金项目： | 国家自然科学基金(基金号20634040)资助项目 |
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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 |
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].China Newsweek,2009(2). |
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| Authors: | MIN Jiadong ; ; ZHANG Yaming ; CHEN Yuyan ; WANG Xianhong ; ZHAO Xiaojiang ; WANG Fosong |
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| Institution: | 1(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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