1. Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province
2. Taiyuan University of Technology
3. Taiyuan
4. PR China
5. State Key Laboratory of Coal Conversion
6. Institute of Coal Chemistry, Chinese Academy of Sciences
7. Taiyuan 030001
8. Department of Chemical Technology
9. Faculty of Science
10. Chulalongkorn University
11. Bangkok 10330
12. Thailand
13. Department of Applied Chemistry
14. School of Engineering
15. University of Toyama
16. Toyama 930-8555
17. Japan