Decoupling study of volatile–char interaction during coal/biomass co-gasification based on a two-stage fixed bed reactor: Insight into the role of O-containing compound species

Meng Ma, Yonghui Bai, Juntao Wei, Xudong Song, Peng Lv, Jiaofei Wang, Weiguang Su, Qingang Xiong, Guangsuo Yu