1. Laboratory of Basic Research in Biomass Conversion and Utilization, University of Science and Technology of China, Hefei, Anhui 230026, PR China
2. Institute of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui 230031, PR China
3. School of Chemical Engineering and Technology, Tianjin University, Tianjin, Hebei 300350, PR China
4. National & Local Joint Engineering Research Center of Precision Coal Mining, Anhui University of Science and Technology, Huainan, Anhui 232001, China