中国炼油与石油化工 ›› 2012, Vol. 14 ›› Issue (2): 55-59.

• Lubrication Research • 上一篇    下一篇

AlCl3/TiCl4为催化剂聚合制取聚α烯烃润滑油基础油研究

于小桥1,沈本贤2,孙辉3,杨兰4,刘磊4,刘纪昌5   

  1. 1. Sinopec Lubricant Company
    2. 石油加工所
    3. 华东理工大学
    4. East China University of Science and Technology
    5. 华东理工大学石油加工所
  • 收稿日期:2011-11-29 修回日期:2011-12-22 出版日期:2012-06-30 发布日期:2012-06-30
  • 通讯作者: 孙辉 E-mail:sunhui@ecust.edu.cn

Synthesis of poly alpha olefins used for lubricant base stocks on an AlCl3/TiCl4 catalyst

  • Received:2011-11-29 Revised:2011-12-22 Online:2012-06-30 Published:2012-06-30

摘要: 比较研究了α烯烃在AlCl3和AlCl3/TiCl4两种催化剂上的聚合反应性能,研究了1-辛烯、1-癸烯、1-十二烯、模拟混合烯烃(1-辛烯:1-癸烯:1-十二烯的质量比为30:40:30)以及石蜡裂解制备的烯烃共五种原料在AlCl3/TiCl4催化剂上的聚合反应性能。结果表明,AlCl3催化剂更易导致结焦反应的发生。随着原料α烯烃碳数的增加,低聚物的凝点增加且动力粘度下降。与三种单体烯烃相比,以混合烯烃和石蜡裂解制备的烯烃为原料时,低聚物具有更高的动力粘度。而石蜡裂解烯烃产品中的正构烷烃会导致低聚物的凝点升高。流程分析结果表明,以石蜡裂解烯烃为原料合成的低聚物的流程与以1-辛烯和1-癸烯为原料的低聚物的流程较为接近,而混合烯烃和1-十二烯聚合得到的产物具有相近的流程。

关键词: 聚α烯烃, AlCl3/TiCl4催化剂, AlCl3催化剂, 润滑油基础油, 聚合

Abstract: The oligomersation reactions on different catalysts were investigated and discussed. 1-Octene, 1-decene, 1-dodecene, a mixed olefins (with a mass ratio w(1-octene): w(1-decene):w(1-dodecene) of 30:40:30), and the product from paraffin cracking were oligomerized on an AlCl3/TiCl4 catalyst. The results indicate that the AlCl3 catalyst leads to severe coking reaction. With an increase in carbon number of alpha olefins, the freezing points of oligomers increase and the kinematic viscosities decline. The oligomers formed from the mixed olefins and the cracking product show higher kinematic viscosities. Normal paraffins in cracking product increase the freezing point of oligomer. Furthermore, distillation range of oligomer from the cracking product is close to those of oligomers from 1-octene and 1-decene while the oligomers from the mixed olefins and 1-dodecene have similar distillation ranges.

Key words: poly alpha olefins, AlCl3 catalyst, AlCl3/TiCl4 catalyst, lubricant base stocks, oligomerisation

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