balloon (1 atm H2). For hydrodeoxygenation of vanillin, 200 μmol (30.43 mg) of vanillin and 5 mg of catalyst were dispersed in 5 mL of ethanol in a vessel tube and the reaction was performed at room temperature with a stirring speed of 300 rpm. Over the course of the reaction, the conversion of reactant and the selectivity of product were analyzed by a gas chromatograph (GC, GC-2014C) with an HP5 column (30 m × 250 mm × 0.25 μm) and an FID detector. Besides, the products were further confirmed by GC-MS.