| 载体化双邻香草醛类苯亚胺钛四齿配体催化剂的制备及其催化性能 |
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| 引用本文： | 李三喜,张文涛,梁兵,张文政.载体化双邻香草醛类苯亚胺钛四齿配体催化剂的制备及其催化性能[J].沈阳化工学院学报,2009,23(1):34-38. |
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| 作者姓名： | 李三喜 张文涛 梁兵 张文政 |
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| 作者单位： | 1. 沈阳工业大学理学院,辽宁,沈阳,110178
2. 沈阳化工学院材料科学与工程学院,辽宁,沈阳,110142 |
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| 基金项目： | 辽宁省科学技术基金，辽宁省教育厅资助项目 |
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| 摘 要： | 以邻香草醛和4，4＇-二氨基二苯醚为原料合成的双邻香草醛（二苯醚）苯亚胺配体与四氯化钛反应制备双邻香草醛（二苯醚）苯亚胺钛络合物，并以SiO2-PEG复合物为载体制备载体化新型四齿配体烯烃聚合催化剂，考察PEG改性对SiO2的影响及载体催化剂的聚合性能．结果表明，改性后可将PEG链接到SiO2载体表面；在50℃、Al／Ti摩尔比为1500时，催化剂活性最高，达到3．21×10^5g／（mol·h），Al／Ti摩尔比为1000时，聚合物相对分子质量达到最大值4．01×10^5．
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| 关 键 词： | 四齿配体 催化剂 载体化 乙烯聚合 |
Preparation of Novel Supported [di (o-vanillin-4,4'-diaminodiphenyl ether] Tetradentate Titanium Catalyst and Its Polymerization of Ethylene |
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| LI San-xi,ZHANG Wen-tao,LIANG Bing,ZHANG Wen-zheng.Preparation of Novel Supported [di (o-vanillin-4,4'-diaminodiphenyl ether] Tetradentate Titanium Catalyst and Its Polymerization of Ethylene[J].Journal of Shenyang Institute of Chemical Technolgy,2009,23(1):34-38. |
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| Authors: | LI San-xi ZHANG Wen-tao LIANG Bing ZHANG Wen-zheng |
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| Affiliation: | LI San-xi, ZHANG Wen-tao, LIANG Bing, ZHANG Wen-zheng (1. Shenyang University of Technology, Shenyang 110178, China; 2. Shenyang University of Chemical Technology, Shenyang 110142, China) |
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| Abstract: | A novel supported di （ o-vanillin-4,4＇-diaminodiphenyl ether] tetradentate titanium catalyst was prepared by immobilization of the tetradentate titanium complex on surface modified SiO2 particles by PEG. IR and TG analysis demonstrated that the PEG molecule is chemically linked to the SiO2 surface. Ethylene polymerization showed that the SiO2 supported di（ o-vanillin-4,4＇-diaminodiphenyl ether] tetradentate titanium catalyst had a very high catalytic activity compared to the original tetradentate titanium complex. Optimum ethylene polymerization activity up to 3.21 × 10^6 g/（ mol·h） can be obtained at the polymerization temperature of 50 ℃ and Al/Ti molar ratio of 1500. The molecular weight of polyethylene product up to 105 can conveniently be reached by this supported catalyst. |
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| Keywords: | tetradentate ligand catalyst immobilization ethylene polymerization |
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