1. School
of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
2. State
Key Laboratory Cultivation Base for Gas Geology and Gas Control, School
of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
3. College
of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China