1. The
Biorefinery Research and Engineering Center, Institute of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, People’s Republic of China
2. University of Chinese Academy of Sciences, Beijing 100049, People’ Republic of China
3. Institute
of Coal Chemistry, Chinese Academy of Sciences, 27 South Taoyuan Road, Taiyuan 030001, People’s Republic of China