EFFECTS OF AMINO GROUPS AND MICROSTRUCTURE OF ORGANIC MESOPOROUS SILICA SUPPORTED METALLOCENE CATALYSTS ON ETHYLENE POLYMERIZATION
文献类型：期刊论文
| 作者 | Cheng, Wen-xi1,2; Tang, Tao1 |
| 刊名 | CHINESE JOURNAL OF POLYMER SCIENCE
 |
| 出版日期 | 2010 |
| 卷号 | 28期号:1页码:93-100 |
| 关键词 | Organic Mesoporous Silicas Supported Metallocene Catalysts Polyethylene Bimodal Molecular Weight Distribution |
| ISSN号 | 0256-7679 |
| DOI | 10.1007/s10118-010-8204-0 |
| 英文摘要 | Mesoporous silica (MS), 3-aminopropyltriethoxysilane (APTES) modified mesoporous silica (AMS), bis(3-trimethoxysilylpropyl)amine modified mesoporous silica (BAMS) and APTES modified solid spherical silica (AS) were prepared and used to immobilize metallocene catalysts for ethylene polymerization. Gel permeation chromatography results showed that polyethylenes (PEs) catalyzed by AMS (or BAMS) supported metallocene catalysts at the molar ratios of Al/Zr = 100, 300 and 500 were of bimodal molecular weight distribution (BMWD); while PEs catalyzed by the above catalysts at the molar ratios of Al/Zr >= 800 were of monomodal molecular weight distribution (MMWD). However, MS (or AS) supported metallocene catalysts could only produce PEs with MMWD in spite of the molar ratio of Al/Zr. It was because that AMS (or BAMS) supported catalysts possessed two active sites for ethylene polymerization at low molar ratios of Al/Zr due to the combination effects of mesopore geometrical constraint and amino groups of the supports, which was confirmed by X-ray photoelectron spectroscopy. This brings forward a novel and easy method for the synthesis of polyolefin with BMWD. |
| 语种 | 英语 |
| WOS记录号 | WOS:000279111200012 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/69525]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Tang, Tao |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China 2.Henan Univ Technol, Coll Mat Sci & Engn, Zhengzhou 450007, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Wen-xi,Tang, Tao. EFFECTS OF AMINO GROUPS AND MICROSTRUCTURE OF ORGANIC MESOPOROUS SILICA SUPPORTED METALLOCENE CATALYSTS ON ETHYLENE POLYMERIZATION[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2010,28(1):93-100. |
| APA | Cheng, Wen-xi,&Tang, Tao.(2010).EFFECTS OF AMINO GROUPS AND MICROSTRUCTURE OF ORGANIC MESOPOROUS SILICA SUPPORTED METALLOCENE CATALYSTS ON ETHYLENE POLYMERIZATION.CHINESE JOURNAL OF POLYMER SCIENCE,28(1),93-100. |
| MLA | Cheng, Wen-xi,et al."EFFECTS OF AMINO GROUPS AND MICROSTRUCTURE OF ORGANIC MESOPOROUS SILICA SUPPORTED METALLOCENE CATALYSTS ON ETHYLENE POLYMERIZATION".CHINESE JOURNAL OF POLYMER SCIENCE 28.1(2010):93-100. |
入库方式： OAI收割
来源：化学研究所
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