Investigation on the composition of soluble portions from the extraction residue of Hanglaiwan subbituminous coal by thermal dissolution and alkanolyses

Yong Gao, Xian‐Yong Wei, Yanjun Li, Jinjun Bai, Yu-Hong Kang, Guang‐Hui Liu, Xiangrong Ma, Xiao Li, Cuiying Lu, Hongcun Bai, Zhi‐Min Zong