1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, RP China
2. Shandong Hengyuan Petrochemical Co., Ltd., Linyi 251500, RP China
3. College of Science, China University of Petroleum (East China), Qingdao 266580, RP China
4. Key Laboratory of Low Carbon Energy and Chemical Engineering of Shandong Province, Shandong University of Science and Technology, Qingdao 266580, RP China