In situ copolymerization of ethylene to linear low-density polyethylene (LLDPE) with calcosilicate (CAS-1) supported dual-functional catalytic system
文献类型：期刊论文
| 作者 | Xu, Hong; Guo, Cun-Yue; Zhang, Mingge; Yang, Hai-Jian; Dong, Jinxiang; Yuan, Guoqing |
| 刊名 | CATALYSIS COMMUNICATIONS
 |
| 出版日期 | 2007-12-01 |
| 卷号 | 8期号:12页码:2143-2149 |
| 关键词 | In Situ Copolymerization Ethylene Cas-1 Support Dual-functional Catalyst |
| ISSN号 | 1566-7367 |
| DOI | 10.1016/j.catcom.2007.04.030 |
| 英文摘要 | Calcosilicate (CAS-1) was used for the first time as an effective carrier for simultaneous immobilization of a dual-functional catalytic system consisted of iron-based bis(imino) pyridyl complex (O) and zirconocene compound (C) to form heterogeneous catalyst precursor (CAS-1/O/C). The alpha-olefins formed form O-catalyzed ethylene oligomerization copolymerized in situ with ethylene to linear low-density polyethylene (LLDPE) under the catalysis of C in CAS-1/O/C upon addition of cocatalysts as described hereafter. Instead of methyl-aluminoxane (MAO), triethylaluminum (TEA) was employed to activate the copolymerization reaction with high catalytic activities and smooth kinetic process. Experimental results reflected that the selectivity for lower alpha-olefins was improved due to the confinement effect of the layered structures of CAS-1, hence greatly increasing the incorporation rate of alpha-olefins into LLDPE main chains and the branching degree accordingly during the in situ copolymerization of alpha-olefins and ethylene. The layered structure of CAS-1 endowed the resultant LLDPE with improved thermal stability in addition to higher molecular weights (M-n). (c) 2007 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000251208900053 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62505]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Guo, Cun-Yue |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Lab New Mat, Beijing 100080, Peoples R China 2.Taiyuan Univ Technol, Res Inst Special Chem, Taiyuan 030024, Peoples R China 3.So Cent Univ Natl, Coll Chem & Mat Sci, Key Lab Catalys & Mat Sci, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Hong,Guo, Cun-Yue,Zhang, Mingge,et al. In situ copolymerization of ethylene to linear low-density polyethylene (LLDPE) with calcosilicate (CAS-1) supported dual-functional catalytic system[J]. CATALYSIS COMMUNICATIONS,2007,8(12):2143-2149. |
| APA | Xu, Hong,Guo, Cun-Yue,Zhang, Mingge,Yang, Hai-Jian,Dong, Jinxiang,&Yuan, Guoqing.(2007).In situ copolymerization of ethylene to linear low-density polyethylene (LLDPE) with calcosilicate (CAS-1) supported dual-functional catalytic system.CATALYSIS COMMUNICATIONS,8(12),2143-2149. |
| MLA | Xu, Hong,et al."In situ copolymerization of ethylene to linear low-density polyethylene (LLDPE) with calcosilicate (CAS-1) supported dual-functional catalytic system".CATALYSIS COMMUNICATIONS 8.12(2007):2143-2149. |
入库方式： OAI收割
来源：化学研究所
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