1. Northwest Institute of Eco‐Environment Resources Chinese Academy of Sciences Lanzhou 730000 P. R. China
2. Key Laboratory of Petroleum Resources Gansu Province Lanhzou 730000 China
3. State Key Laboratory of Fine Chemicals Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources School of Chemical Engineering Dalian University of Technology Dalian 116024 P. R. China
4. CAS Key Laboratory Nuclear Radiation & Nuclear Energy Technology and Multidisciplinary Initiative Center Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 P. R. China