Synthesis of low viscosity poly-alpha-olefins lubricant base oil from boron trifluoride/acetic acid catalyzed 1-decene

doi:10.16085/j.issn.1000-6613.2017-1782

Abstract

Abstract: In this paper, we prpared low viscosity poly-alpha-olefin base oil from 1-decene with BF₃/acetic acid as the catalyst. We investigated the effects of reaction temperature, reaction pressure, reaction time, BF₃/acetic acid complex dosage and the recycle of BF₃/acetic acid complex on the performance of PAO products. Experimental results showed that when the reaction was taken place at temperature of 30℃, pressure of 0.2MPa, and with reaction time of 2h, and the mass ratio of fresh BF₃/acetic acid complex to 1-decene of 1:100, the conversion rate of 1-decene was > 99.4%, and the yield of PAO was > 95.7%, The kinematic viscosity of the obtained product at 100℃ was 4.33mm²/s, and the viscosity index was 134, the pour point was -53℃. The recycling of BF₃/acetic acid complex can effectively reduce the production costs and the pollution emissions, but the catalytic activity was decreased. However, when some fresh BF₃/acetic acid complex were added into the recycled ones, the composition and PAO performance of the products were almost the same as those produced with fresh complexes.

Key words: 1-decene, poly-alpha-olefins, boron trifluoride, polymerization, catalyst, recovery

摘要： 开展了BF₃/乙酸络合物催化1-癸烯合成低黏度聚α-烯烃润滑油基础油的实验研究，考察了反应温度、压力、时间、催化剂用量和催化剂回用工艺对反应产物组成和聚α-烯烃（PAO）产品性能的影响，结果表明：在反应温度为30℃、反应压力为0.2MPa、反应时间为2h、新鲜BF₃/乙酸络合物与1-癸烯的质量比为1∶100的条件下，1-癸烯转化率大于99.4%，PAO收率大于95.7%，产品的100℃运动黏度为4.33mm²/s，黏度指数为134，倾点为–53℃；采用BF₃/乙酸络合物回用工艺可有效降低生产成本，减少污染排放，但回收络合物的催化活性有所下降，向催化体系补充部分新鲜络合物后，产物组成及PAO性能与采用新鲜络合物时基本一致。

关键词: 1-癸烯, 聚&alpha, -烯烃, 三氟化硼, 聚合, 催化剂, 回收

CLC Number:

O643.3

CHU Hongling, MA Kecun, WANG Sihan, XU Xianming, WANG Libo, HUO Hongliang. Synthesis of low viscosity poly-alpha-olefins lubricant base oil from boron trifluoride/acetic acid catalyzed 1-decene[J]. Chemical Industry and Engineering Progress, 2018, 37(08): 3016-3020.

褚洪岭, 马克存, 王斯晗, 徐显明, 王力搏, 霍宏亮. BF₃/乙酸催化1-癸烯合成低黏度聚α-烯烃润滑油基础油[J]. 化工进展, 2018, 37(08): 3016-3020.

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