| 含磷配体改性Mo催化剂催化丁二烯聚合的动力学研究 |
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| 引用本文： | 丛悦鑫,李迎,徐玲,华静.含磷配体改性Mo催化剂催化丁二烯聚合的动力学研究[J].弹性体,2013,23(1):1-4. |
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| 作者姓名： | 丛悦鑫 李迎 徐玲 华静 |
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| 作者单位： | 1. 中国石油化工股份有限公司齐鲁分公司橡胶厂,山东淄博,255438
2. 青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛,266042 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 利用磷酸三苯酯（TPP）和五氯化钼（MoCls）配位得到主催化剂（MoTPP），与苯酚取代的三异丁基铝（A1）组成催化体系（MoTPP—A1）催化制备1，2-聚丁二烯（1，2-PB）橡胶。通过对Morpp—A1体系的动力学实验求得反应速率常数、反应活化能等。结果表明，含rrPP体系在聚合反应初期属快引发、逐步增长、无终止的聚合反应体系，聚合速率对单体浓度呈一级动力学关系，表观活化能为Ea-44．5kJ／mol，与辛醇取代的MoCl5-A1体系（E=51．7kJ／m01）相比，前者的聚合活性高。
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| 关 键 词： | 1，2-聚丁二烯 磷酸三苯酯 钼化合物 配位聚合 |
Study on kinetics of butadiene polymerization by molybdenum-base catalyst with triphenyl phosphite as ligand |
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| Cong Yuexin
,
Li Ying
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Xu Ling
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Hua Jing.Study on kinetics of butadiene polymerization by molybdenum-base catalyst with triphenyl phosphite as ligand[J].China Elastomerics,2013,23(1):1-4. |
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| Authors: | Cong Yuexin Li Ying Xu Ling Hua Jing |
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| Affiliation: | 1.Rubber Complex of Qilu Branch Co.,SINOPEC,Zibo 255438,China;2.Key laboratory of Rubber-Plastic,Ministry of Education,Qingdao University of Science and Technology,Qingdao 266042,China) |
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| Abstract: | Polymeric kinetics of butadiene initiated with triphenyl phosphate（P）as a ligand to mod- ify MoCls-AI（OPh）（i-Bu）2 （MoP-A1）catalyst system were investigated. The kinetics constants such as reaction rate（K）and activation energy（Ea）, had also been derived. The results showed that the charac- ter of this polymerization rate was rapid initiation rate, step propagation and no termination at the ini- tial reaction stage of this polymerization. The rate of polymeriztion was found to be first order with re- spect to monomer concentration and the apparent activation energy was 44. 5 kJ/mol. The result showed that the polymerization activity of MOTpp-A1 catalyst system had been improved compared with that of MoC13 （OCsH17）2-A1 catalyst system. |
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| Keywords: | 1 2-polybutadiene triphenyl phosphate molybdenum-base catalyst coordination poly-merization |
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