1. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2. State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
3. Analytical Instrumentation Center, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030032, China
4. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of science, Dalian 116023, China
5. Chemical Engineering, University of Newcastle, Callaghan NSW 2308, Australia