CF_3SO_3H催化混合α-烯烃齐聚制备低黏度油的研究

SYNTHESIS OF LOW VISCOSITY OIL FROM OLIGOMERIZATION OF MIXED α-OLEFINS CATALYZED BY CF_3SO_3H

以三氟甲磺酸(CF3SO3H)为催化剂,1-己烯、1-癸烯、1-十二碳烯为原料进行齐聚反应合成低黏度PAO,考察了催化剂用量、反应温度、反应时间及烯烃原料组成对PAO收率及性能的影响。结果表明:在反应温度为40℃、反应时间为3h、催化剂与原料摩尔比为0.36的条件下,合成PAO的100℃运动黏度为4.83mm2/s、凝点为-30℃、黏度指数为140,PAO收率在70%以上,其性能能够满足高质量的PAO合成润滑油基础油的要求。

Poly-alpha-olefins synthetic oil （PAO） was one of the most widely used synthetic lubri- cants at present. The oligomerization of C6, C10, C12 α-olefins was studied with CF3SO3 H as catalyst. The effects of process conditions including catalyst dosage, feed composition, reaction temperature and reaction time, on the PAO yield and the performance of synthetic lubricant were studied. Results showed that under the conditions of catalyst/feed molar ratio of 0.36, reaction temperature of 40℃ and reaction time of 3 h, PAO with low viscosity （100 ℃ kinematic viscosity of 4.83 mm2/s）, low condensa- tion point （--30℃） and high viscosity index （140） was synthesized with a yield of above 70%, and its performance well met the requirements of base oil for high quality PAO synthetic lubricants.