Poly-α-olefin(PAO)synthetic oil,a regular long-chain alkane produced from the catalytic polymerization of α-olefin,is a high-quality lubricating base oil with huge market potential.In this study,PAO synthesis based on the catalytic polymerization of 1-decene using the ionic liquid(IL)[Bmim]x[C2H5NH3]1-x[Al2Cl7]as the catalyst was studied.Compared with the conventional catalyst[Bmim][Al2Cl7],the obtained PAO product incorporates more trimers and tetramers of 1-decene and contains few double-bond end groups,demonstrating a better catalytic system for PAO-10 production.The apparent polymerization kinetics of 1-decene in this catalytic system were studied based on the 1-decene concentration,catalyst concentration,and reaction temperature.An apparent kinetic equation for PAO formation was determined,providing a promising strategy for PAO production using 1-decene polymerization.