1. Key Laboratory of Coal Processing and Efficient Utilization, China University of Mining & Technology, Xuzhou221116, Jiangsu, China
2. Shanxi Key Laboratory of Low Metamorphic Coal Clean Utilization, School of Chemistry and Chemical Engineering, Yulin University, Yulin719000, Shanxi, China
3. Cosychem Technology (Tianjin) Co., Ltd., Tianjin300450, China