1. Institute of Computer & Chemical Engineering, College of Chemical Engineering, Qingdao University of Science and Technology, No. 53 Zhengzhou Rd., Shibei District, Qingdao, Shandong, SD 532, China
2. Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China