1. College
of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, People’s Republic of China
2. State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, People’s Republic of China
3. Key
Laboratory of Coal Science and Technology, Taiyuan University of Technology, Ministry of Education and Shanxi Province, Taiyuan 030024, Shanxi, People’s Republic of China