1. College of New Energy and Materials, China University of Petroleum, Beijing 102249, China
2. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
3. School of Minerals Processing & Bioengineering, Central South University, Hunan, China
4. School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao 066004, P. R. China
5. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
6. Beijing Key Lab of Fine Ceramics, Tsinghua University, Beijing 100084, China