1. College of Chemistry & Chemical Engineering, Northeast Petroleum University, Daqing 163318, P.R. China
2. Provincial Key Laboratory of Oil & Gas Chemical Technology, Northeast Petroleum University, Daqing 163318, P.R. China
3. Shuguang Oil Production Plant, Petrochina Liaohe Oilfield Company, Panjin 124109, P.R. China
4. Daqing Petrochemical Research Center, Daqing 163318, P.R. China