1. College of Chemistry and Chemical Engineering
2. Southwest Petroleum University
3. Chengdu 610500
4. P. R. China
5. State Key Laboratory of Catalysis
6. Dalian Institute of Chemical Physics
7. Chinese Academy of Sciences
8. Dalian 116023
9. P.R. China
10. Beijing Synchrotron Radiation Facility
11. Institute of High Energy Physics
12. Beijing 100049
13. Shanghai Advanced Research Institute
14. Shanghai 201210