Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands: Synthesis, Characterization, and Ethylene (Co)polymerization
文献类型：期刊论文
| 作者 | Han, Shuliang; Yao, Erdong; Qin, Wei; Zhang, Shaofei; Ma, Yuguo |
| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2012-05-22 |
| 卷号 | 45期号:10页码:4054-4059 |
| ISSN号 | 0024-9297 |
| DOI | 10.1021/ma300384w |
| 英文摘要 | A binuclear heteroligated titanium(IV) catalyst based on phenoxyimine ligands (FI2-Ti-2) with its crystal structure elucidated has been developed for the first time for olefin (co)polymerization. In ethylene polymerization, the activity of the binuclear catalyst FI2-Ti-2 can reach 3.0 X 106 g mol(-1) h(-1), and the polydispersity of the resulting polymers is narrow. In copolymerization of ethylene and other olefins, similar incorporation ratios for monoenes are obtained for FI2-Ti-2 and FI-Ti-1. However, the incorporation ratio of 1,5-hexadiene increases from 3.2% using FI-Ti-1 to 8.8% with FI2-Ti-2. In comparison, the binuclear monophenoxyimine catalyst, [FI2-Ti-2(THF)(2)], exhibits higher catalytic activity and incorporates more alpha-olefins than its mononuclear analogue [FI-Ti-1(THF)] in the copolymerization. These results are interpreted as consequences of two effects. First, the cooperativity between the two metal centers facilitates the coordination of olefin. Second, the substitutions near the active sites exert a steric effect by blocking and suppressing the binding of comonomers. |
| 语种 | 英语 |
| WOS记录号 | WOS:000304224700004 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43387]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Ma, Yuguo |
| 作者单位 | Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys, Minist Educ,Coll Chem, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Shuliang,Yao, Erdong,Qin, Wei,et al. Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands: Synthesis, Characterization, and Ethylene (Co)polymerization[J]. MACROMOLECULES,2012,45(10):4054-4059. |
| APA | Han, Shuliang,Yao, Erdong,Qin, Wei,Zhang, Shaofei,&Ma, Yuguo.(2012).Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands: Synthesis, Characterization, and Ethylene (Co)polymerization.MACROMOLECULES,45(10),4054-4059. |
| MLA | Han, Shuliang,et al."Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands: Synthesis, Characterization, and Ethylene (Co)polymerization".MACROMOLECULES 45.10(2012):4054-4059. |
入库方式： OAI收割
来源：化学研究所
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