Huazhong University of Science and Technology, affiliation not provided to SSRN, affiliation not provided to SSRN, Huazhong University of Science and Technology, Huazhong University of Science and Technology - State Key Laboratory of Coal Combustion, Nanjing Agricultural University (NAU), Huazhong University of Science and Technology, Huazhong University of Science and Technology and Huazhong University of Science and Technology