【摘要】 研究了新型α-烯烃聚合制润滑油基础油的催化剂。在N2保护下,用Cl2氯化SiO2/γ-Al2O3作为催化剂。在最佳实验条件下,考察SiO2和γ-Al2O3的摩尔比,Cl2和N2的体积比,氯化温度和氯化时间对催化剂催化性能的影响。以产品的运动粘度(20℃)的大小为标准进行评价。结果表明,该催化剂的制备最佳条件为:SiO2和γ-Al2O3的摩尔比为1,Cl2和N2体积比为0.2,500℃氯化4h。由于加入了SiO2,催化剂不仅保留了AlCl3对烯烃聚合反应表现出的较高的活性,而且克服了单独使用AlCl3时的强腐蚀性和反应过于剧烈等方面的不足。通过合成油的运动粘度和溴价等重要评价指标对催化剂进行了评价。更多还原

【Abstract】 A new type of catalyst using the polymerization of α-olefin to produce lubricating base oil was studied. In the protection of N₂,SiO₂/γ-Al₂O₃ been chloridized by Cl₂ is used as catalyst.Under the best reaction conditions,the effects of SiO₂/γ-Al 2O₃ mole ratio, volumic ratio of N₂ and Cl₂, chlordizing temperature and time on the performance of catalysts were researched.Kinetic viscosity was used as criterion to appraise catalysts. Results show that the optimal chloridizing conditions are as follows: SiO₂/γ-Al₂O₃ mole ratio is 1,volumic ratio of N₂ and Cl₂ is 0.2, chloridizing temperature is 500 ℃ and chloridizing time>4 h. Because of adding SiO₂, this catalyst has not only kept AlCl₃’s unusually high activation to olefin-polymerization, but also overcome the strong caustic and much violent response of AlCl₃’s deficiency. Through comparing with important evaluations, such as bromine number and kinetic viscosity, the catalyst is appraised.更多还原