1. College
of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, People’s Republic of China
2. Department
of Chemical and Petroleum Engineering, University of Wyoming, 1000 E. University
Avenue, Laramie, Wyoming 82071, United States
3. Key
Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education
and Shanxi Province, Taiyuan, Shanxi 030024, People’s Republic of China