1. Beijing Key Laboratory of Ionic Liquids Clean Process; Key Laboratory of Green Process and Engineering; State Key Laboratory of Multiphase Complex Systems; Institute of Process Engineering; Chinese Academy of Sciences; Beijing 100190 P. R. China
2. School of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing 100049 P. R. China
3. School of Chemical and Environmental Engineering; China University of Mining & Technology-Beijing; Beijing 100083 P. R. China