Stabilization of bio-oil from simulated pyrolysis oil using sulfided NiMo/Al2O3 catalyst

•Stabilization of simulated pyrolysis oil, comparing with (NiMo/Al2O3) and without catalyst.•NiMo/Al2O3 significantly reduced the solid formation, except during heating.•The removal of furan and sugar significantly reduced the solid formation.•Solids solved in DMSO showed macromolecules from sugar derivatives were found at 180 °C.•DMSO solubles mainly consisted of aliphatic compounds at 300 °C.