1. State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
2. University of Chinese Academy of Sciences Beijing 100049 People's Republic of China
3. National Energy Center for Coal to LiquidsSynfuels China Technology Co., Ltd. Huairou District Beijing 101407 P. R. China
4. SynCat@BeijingSynfuels China Technology Co., Ltd. Huairou District Beijing 101407 P. R. China
5. Beijing Synchrotron Radiation Laboratory Institute of High Energy PhysicsChinese Academy of Sciences Beijing 100049 P. R. China