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。
A new type of catalyst using the polymerization of α-olefin to produce lubricating base oil was studied. In the protection of N_2,SiO_2/γ-Al_2O_3 been chloridized by Cl_2 is used as catalyst.Under the best reaction conditions,the effects of SiO_2/γ-Al_ 2O_3 mole ratio, volumic ratio of N_2 and Cl_2, 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: SiO_2/γ-Al_2O_3 mole ratio is 1,volumic ratio of N_2 and Cl_2 is 0.2, chloridizing temperature is 500 ℃ and chloridizing time>4 h. Because of adding SiO_2, this catalyst has not only kept AlCl_3's unusually high activation to olefin-polymerization, but also overcome the strong caustic and much violent response of AlCl_3's deficiency. Through comparing with important evaluations, such as bromine number and kinetic viscosity, the catalyst is appraised.
出处
《辽宁石油化工大学学报》
CAS
2004年第3期32-34,共3页
Journal of Liaoning Petrochemical University
