| 铁化合物-Al(i-Bu)3卤化物系催化剂的ESR研究 |
| |
| 引用本文： | 沈琪,郭小光,詹瑞云,刘国智.铁化合物-Al(i-Bu)3卤化物系催化剂的ESR研究[J].化学学报,1987,45(12):1204-1206. |
| |
| 作者姓名： | 沈琪 郭小光 詹瑞云 刘国智 |
| |
| 作者单位： | 中国科学院长春应用化学研究所 |
| |
| 摘 要： | 用ESR法研究了Fe(naph)2-Al(i-Bu)3-烯丙基氯和Fe(acac)3-Al(i-Bu)3-AlEt2Cl两个反应体系.以了解这类含铁催化剂的催化机理.结果表明,不管它们的起始铁化合物中的铁离子是II价还是III价,由它们和Al(i-Bu)3及卤化物反应组成的活性催化剂,其活性中心铁离子均是II价.这一结果为进一步确定铁系催化剂活性中心的结构提供了重要依据.
|
| 关 键 词： | 卤化物 催化剂 三元体系 铝化合物 铁化合物 电子自旋共振 丁烷P |
ESR studies catalyst systems iron compounds - Al(i-Bu)3 - halide |
| |
| SHEN QI,GUO XIAOGUANG,ZHAN RUIYUAN,LIU GUOZHI.ESR studies catalyst systems iron compounds - Al(i-Bu)3 - halide[J].Acta Chimica Sinica,1987,45(12):1204-1206. |
| |
| Authors: | SHEN QI GUO XIAOGUANG ZHAN RUIYUAN LIU GUOZHI |
| |
| Abstract: | The ESR spectra of 2 novel Fe catalyst systems Fe(naph)2-Al(iso-Bu)3-allyl chloride and Fe(acac)3-Al(iso-Bu)3-AlEt2Cl (naph = naphthenate) used for the polymerisation of butadiene were measured. The valence states of Fe in the active species are divalent for both systems. Thus, by using Fe(acac)3 as the main catalyst, reduction from Fe3+ to Fe2+ occurs during the formation of the active catalyst, and a free radical formed during reduction is detected. Reactions among the 3 components are discussed. |
| |
| Keywords: | HALIDE CATALYST TERNARY SYSTEM ALUMINIUM COMPOUNDS IRON COMPOUNDS ELECTRON SPIN RESONANCE BUTANE P |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《化学学报》浏览原始摘要信息 |
| 点击此处可从《化学学报》下载免费的PDF全文 |
