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Abstract Al2O3 supported Pt and Pd nanoparticle catalysts were prepared by impregnation-reduction method, and employed in the photocatalytic aqueous-phase reforming of ethylene glycol. Light illumination can decrease the reaction activation… Click to show full abstract
Abstract Al2O3 supported Pt and Pd nanoparticle catalysts were prepared by impregnation-reduction method, and employed in the photocatalytic aqueous-phase reforming of ethylene glycol. Light illumination can decrease the reaction activation energy remarkably. Pt/Al2O3 exhibits much higher H2 turnover frequency (TOF) and lower CO selectivity than Pd/Al2O3 catalyst. Their morphology and structure were characterized by XRD, TEM, UV-vis techniques. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) indicates light can promote the cleavage of O–H bonds of ethylene glycol molecule. DFT calculation suggests the lower CO selectivity over Pt/Al2O3 catalyst can be attributed to the low energy barriers of reaction in the step of CO+O→CO2.
Journal Title: Journal of Fuel Chemistry and Technology
Year Published: 2019
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