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Elucidating the Role of Ni(Pd) in Ni(Pd)-Mo2C/Carbon Catalysts for the Hydrodeoxygenation of Dibenzofuran and Bio-Oil
- Source :
- Industrial & Engineering Chemistry Research; November 2022, Vol. 61 Issue: 43 p15866-15879, 14p
- Publication Year :
- 2022
-
Abstract
- Mo2C catalysts (10 wt %) promoted with Ni or Pd (1 wt %) and supported on activated biochar were synthesized by carbothermal hydrogen reduction and assessed for the hydrodeoxygenation (HDO) of dibenzofuran (DBF) as a model bio-oil reactant. Ni and Pd improved the activity of the Mo2C/ABC catalyst and shifted selectivity from direct deoxygenation products to hydrogenated products. The results correlated with an increased hydrogenation of O species adsorbed on the passivated catalysts at low temperature, indicative of a decrease in oxidation of the Mo2C and confirmed by X-ray photoelectron spectroscopy and temperature programmed oxidation–reduction analysis. Density functional theory calculations showed the increased horizontal adsorption of DBF and a reduced energy barrier for dissociative H2adsorption on the Ni(Pd)-promoted Mo2C surface. The high hydrogenation activity of the Ni- and Pd-Mo2C catalysts was also apparent during the HDO of an esterified bio-oil, significantly decreasing coke yield together with the phenol and ester content and the O/C ratio of the hydrotreated bio-oil.
Details
- Language :
- English
- ISSN :
- 08885885 and 15205045
- Volume :
- 61
- Issue :
- 43
- Database :
- Supplemental Index
- Journal :
- Industrial & Engineering Chemistry Research
- Publication Type :
- Periodical
- Accession number :
- ejs60987949
- Full Text :
- https://doi.org/10.1021/acs.iecr.2c02224