Experimental study on bio-oil upgrading over Pt/SO42-/ZrO2/SBA-15 catalyst in supercritical ethanol

- The effects of reaction conditions on bio-oil upgrading were studied.
- The physical properties and chemical compounds of upgraded bio-oil were analyzed.
- Higher initial hydrogen pressures can inhibit coke formation effectively.
- Rising mass ratio of bio-oil to ethanol is helpful for desired products formation.
- Rising temperature will increase the heating value of upgraded bio-oil.