1. College of Chemistry and Chemical Engineering
2. Taiyuan University of Technology
3. Taiyuan 030024
4. P. R. China
5. Department of Chemical and Petroleum Engineering
6. Key Laboratory of Coal Science and Technology (Taiyuan University of Technology)
7. Ministry of Education and Shanxi Province
8. People's Republic of China
9. The University of Wyoming
10. Laramie
11. USA