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


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:
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
Additional Information: © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International 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)
Publication ISSN: 1873-4308
Last Modified: 26 Feb 2024 08:20
Date Deposited: 04 Sep 2017 11:15
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2018-04-15
Published Online Date: 2017-08-24
Accepted Date: 2017-08-14
Authors: Berenguer, Antonio
Bennett, James A.
Hunns, James
Moreno, Inés
Coronado, Juan M.
Lee, Adam F.
Pizarro, Patricia
Wilson, Karen (ORCID Profile 0000-0003-4873-708X)
Serrano, David P.

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