Catalytic hydrodeoxygenation of m-cresol over Ni2P/hierarchical ZSM-5

Berenguer, Antonio, Bennett, James A., Hunns, James, Moreno, Inés, Coronado, Juan M., Lee, Adam F., Pizarro, Patricia, Wilson, Karen and Serrano, David P. (2017). Catalytic hydrodeoxygenation of m-cresol over Ni2P/hierarchical ZSM-5. Catalysis Today, in pre ,

Abstract

Bifunctional catalysts comprising Ni2P supported over a hierarchical ZSM-5 zeolite (h-ZSM-5) were synthesized and applied to the hydrodeoxygenation (HDO) of m-cresol, a model pyrolysis bio-oil compound. Surface and bulk characterization of Ni2P/h-ZSM-5 catalysts by XRD, TEM, DRIFTS, TPR, porosimetry and propylamine temperature-programmed desorption reveal that Ni2P incorporation modifies the zeolite textural properties through pore blockage of the mesopores by phosphide nanoparticles, but has negligible impact of the micropore network. Ni2P nanoparticles introduce new, strong Lewis acid sites, whose density is proportional to the Ni2P loading, accompanied by new Brönsted acid sites attributed to the presence of Psingle bondOH moieties. Ni2P/h-ZSM-5 is ultraselective (>97%) for m-cresol HDO to methylcyclohexane, significantly outperforming a reference Ni2P/SiO2 catalyst and highlighting the synergy between metal phosphide and solid acid support. m-Cresol conversion was proportional to Ni2P loading reaching 80 and 91% for 5 and 10 wt% Ni respectively. Turnover frequencies for m-cresol HDO are a strong function of Ni2P dispersion, evidencing a structure sensitivity, with optimum activity observed for 4 nm particles.

Publication DOI: https://doi.org/10.1016/j.cattod.2017.08.032
Divisions: Engineering & Applied Sciences
Engineering & Applied Sciences > Chemical engineering & applied chemistry
Engineering & Applied Sciences > European Bioenergy Research Institute (EBRI)
Additional Information: © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ Funding: Spanish Ministry of Economy and Competitiveness (CTQ2014-60209-R); Regional Government of Madrid (S2013/MAE-2882); EPSRC (EP/K036548/2 and EP/N009924/1).
Uncontrolled Keywords: hydrodeoxygenation,m-cresol,nickel phosphide,hierarchical ZSM-5,Catalysis,Chemistry(all)
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Online Date: 2017-08-24
Authors: Berenguer, Antonio
Bennett, James A.
Hunns, James
Moreno, Inés
Coronado, Juan M.
Lee, Adam F. ( 0000-0002-2153-1391)
Pizarro, Patricia
Wilson, Karen ( 0000-0003-4873-708X)
Serrano, David P.

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