1. Department of Chemistry
2. College of Sciences
3. Northeastern University
4. Shenyang
5. China
6. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
7. College of Chemistry
8. Jilin University
9. Changchun 130012
10. P. R. China
11. State Key Laboratory of Coal Conversion
12. Institute of Coal Chemistry, Chinese Academy of Sciences
13. Taiyuan