1. State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Xinjiang University, Urumqi 830046, PR China
2. Research Institute of PetroChina Dushanzi Petrochemical Company, Dushanzi 833699, PR China
3. Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai 200237, PR China