1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
2. Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, Hunan 414006, P. R. China
3. College of Chemical Engineering and Environment, State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, P. R. China
4. Laboratory of Heavy Oil at Karamay, China University of Petroleum-Beijing at Karamay, Karamay 834000, P. R. China
5. Huizhou Research Institute, Sun Yat-sen University, Huizhou, Guangdong 516081, P. R. China