1. Provincial Key Laboratory of Oil & Gas Chemical Technology
2. College of Chemistry & Chemical Engineering
3. Northeast Petroleum University
4. 163318 Daqing
5. China
6. Hebei Jingzhi Technology Co., LTD
7. 061000 Cangzhou
8. State Key Laboratory of Heavy Oil Processing
9. China University of Petroleum (Beijing)
10. 102249 Beijing