ZrO2-Al2O3 and CeO2-Al2O3 were prepared by a co-precipitation method and selected as supports for Pt catalysts. The effects of CeO2 and ZrO2 on the surface area and Brønsted acidity of Pt/Al2O3 were studied. In the
hydrodeoxygenation (HDO) of p-cresol, the addition of ZrO2 promoted the direct deoxygenation activity on Pt/ZrO2-Al2O3 via Caromatic-O bond scission without benzene ring saturation. Pt/CeO2-Al2O3 exhibited higher deoxygenation extent than Pt/Al2O3 due to the fact that Brønsted acid
sites on the catalyst surface favored the adsorption of p-cresol. With the advantages of CeO2 and ZrO2 taken into consideration, CeO2-ZrO2-Al2O3 was prepared, leading to the highest HDO activity of Pt/CeO2-ZrO2-Al2O3. The deoxygenation extent for Pt/CeO2-ZrO2-Al2O3 was 48.4% and
14.5% higher than that for Pt/ZrO2-Al2O3 and Pt/CeO2-Al2O3, respectively.
Revised: November 18, 2016 |
Published: June 17, 2016
Citation
Wang W., K. Wu, P. Liu, L. Li, Y. Yang, and Y. Wang. 2016.Hydrodeoxygenation of p–cresol over Pt/Al2O3 catalyst promoted by ZrO2, CeO2 and CeO2–ZrO2.Industrial and Engineering Chemistry Research 55, no. 28:7598-7603.PNNL-SA-119534.doi:10.1021/acs.iecr.6b00515