1. State
Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, People’s Republic of China
2. University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3. State
Key Laboratory Breeding Base of Coal Science and Technology Co-founded
by Shanxi Province and the Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan, Shanxi 030024, People’s Republic of China