1. State Key Laboratory of Material Processing and Die and Mould Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan Hubei 430074 China
2. State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 China
3. National Energy Center for Coal to Clean Fuels Synfuels China Co., Ltd. Huairou District Beijing 101400 China