Bis(2-(6-methylpyridin-2-yl)-benzimidazolyl)titanium dichloride and titanium bis(6-benzimidazolylpyridine-2-carboxylimidate): Synthesis, characterization, and their catalytic behaviors for ethylene polymerization
文献类型：期刊论文
| 作者 | Liu, Shaofeng1,2; Zuo, Weiwei1,2; Zhang, Shu1,2; Hao, Peng1,2; Wang, Deligeer1,2,3; Sun, Wen-Hua1,2
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| 刊名 | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
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| 出版日期 | 2008-05-15 |
| 卷号 | 46期号:10页码:3411-3423 |
| 关键词 | Catalysis Polyethylene 6-benzimidazolylpyridyl-2-carboxylimidate Titanium X-ray |
| ISSN号 | 0887-624X |
| DOI | 10.1002/pola.22694 |
| 英文摘要 | A series of 6-(benzimidazol-2-yl)-N-organylpyridine-2-carboxamide were synthesized and transformed into 6-benzimidazolylpyridine-2-carboxylimidate as dianionic tridentate ligands. Bis(2-(6-methylpyridin-2-yl)-benzimidazolyl)titanium dichloride (Cl) and titanium bis(6-benzimidazolylpyridine-2-carboxylimidate) (C2-C8) were synthesized in acceptable yields. These complexes were systematically characterized by elemental and NMR analyses. Crystallographic analysis revealed the distorted octahedral geometry around titanium in both complexes C1 and C4. Using MAO as cocatalyst, all complexes exhibited from good to high catalytic activities for ethylene polymerization. The neutral bis(6-benzimidazolylpyridine-2-carboxylimidate)titanium (C2-C8) showed high catalytic activities and good stability for prolonged reaction time and elevated reaction temperature; however, C1 showed a short lifetime in catalysis as being observed at very low activity after 5 min. The elevated reaction temperature enhanced the productivity of polyethylenes with low molecular weights, whereas the reaction with higher ethylene pressure resulted in better catalytic activity and resultant polyethylenes with higher molecular weights. At higher ratio of MAO to titanium precursor, the catalytic system generated better activity with producing polyethylenes with lower molecular weights. (C) 2008 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000256028600023 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/65717]  |
| 专题 | 化学研究所_工程塑料实验室 中国科学院化学研究所 |
| 通讯作者 | Sun, Wen-Hua |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Engn Plast, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China 3.Inner Mongolia Normal Univ, Dept Chem, Hohhot 010022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Shaofeng,Zuo, Weiwei,Zhang, Shu,et al. Bis(2-(6-methylpyridin-2-yl)-benzimidazolyl)titanium dichloride and titanium bis(6-benzimidazolylpyridine-2-carboxylimidate): Synthesis, characterization, and their catalytic behaviors for ethylene polymerization[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2008,46(10):3411-3423. |
| APA | Liu, Shaofeng,Zuo, Weiwei,Zhang, Shu,Hao, Peng,Wang, Deligeer,&Sun, Wen-Hua.(2008).Bis(2-(6-methylpyridin-2-yl)-benzimidazolyl)titanium dichloride and titanium bis(6-benzimidazolylpyridine-2-carboxylimidate): Synthesis, characterization, and their catalytic behaviors for ethylene polymerization.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,46(10),3411-3423. |
| MLA | Liu, Shaofeng,et al."Bis(2-(6-methylpyridin-2-yl)-benzimidazolyl)titanium dichloride and titanium bis(6-benzimidazolylpyridine-2-carboxylimidate): Synthesis, characterization, and their catalytic behaviors for ethylene polymerization".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 46.10(2008):3411-3423. |
入库方式： OAI收割
来源：化学研究所
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