The effects of several parameters on the yields and properties
of BCO obtained from EFB by hydro-/solvothermolysis were
studied. The highest yields of phenol and guaiacol were obtained
at 350 ◦C, while the highest yields of catechol and syringol were
obtained at 400 ◦C. The inorganic matter in EFB can act as a
base catalyst to enhance the yield of BCO and monomeric compounds