AlCl3-季戊四醇络合催化剂催化1-辛烯齐聚工艺

摘要

Poly-alpha-olefins are high quality lubricants base oil. Using aluminum chloride-pentaerythritol complex as the catalyst,the oligomerization of 1-octylene was studied. The effects of molar fractions of the catalyst, molar ratio of the pentaerythritol/ AlCl3, reaction temperature and reaction time on the yield of poly-alpha-olefins and the selectivity to polymer were investigated. The results showed that poly-alpha-olefins yield of 93, 4% was attained under the optimal process condition of synthetic lubricant as follows; using 1-octylene as the raw material, A1Cl3 molar fraction 2% ,pentaerythritol/AlC13 molar ratio 0.5 .reaction temperature 50 ℃ , reaction time 4 h. The product of poly-alpha-olefins was mainly consisted of tri-niers and tetrarners, which were the ideal lube components and had better selectivity.%聚α-烯烃是高品质的润滑油基础油.使用AlCl3-季戊四醇络合催化剂,对1-辛烯齐聚反应进行研究,考察催化剂物质的量分数、季戊四醇与AlCl3物质的量比、反应温度和反应时间对聚烯烃收率及不同聚合物选择性的影响.结果表明,1-辛烯齐聚合成聚α-烯烃最佳工艺条件:AlCl3物质的量分数为2％,季戊四醇与AlCl3物质的量比为0.5,反应温度为50℃,反应时间为4h,聚烯烃收率约为93.4％,合成的聚α-烯烃产品中润滑油的理想组分三聚体和四聚体选择性较好.