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

Berenguer, A, Bennett, J, Hunns, J, Moreno, I, Coronado, J, Lee, A, Pizarro, P, Wilson, K and Serrano, D 2018, 'Catalytic hydrodeoxygenation of m-cresol over Ni2P/hierarchical ZSM-5', Catalysis Today, vol. 304, pp. 72-79.


Document type: Journal Article
Collection: Journal Articles

Title Catalytic hydrodeoxygenation of m-cresol over Ni2P/hierarchical ZSM-5
Author(s) Berenguer, A
Bennett, J
Hunns, J
Moreno, I
Coronado, J
Lee, A
Pizarro, P
Wilson, K
Serrano, D
Year 2018
Journal name Catalysis Today
Volume number 304
Start page 72
End page 79
Total pages 8
Publisher Elsevier
Abstract Bifunctional catalysts comprising Ni 2 P 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 Ni 2 P/h-ZSM-5 catalysts by XRD, TEM, DRIFTS, TPR, porosimetry and propylamine temperature-programmed desorption reveal that Ni 2 P incorporation modifies the zeolite textural properties through pore blockage of the mesopores by phosphide nanoparticles, but has negligible impact of the micropore network. Ni 2 P nanoparticles introduce new, strong Lewis acid sites, whose density is proportional to the Ni 2 P loading, accompanied by new Brönsted acid sites attributed to the presence of P-OH moieties. Ni 2 P/h-ZSM-5 is ultraselective ( > 97%) for m-cresol HDO to methylcyclohexane, significantly outperforming a reference Ni 2 P/SiO 2 catalyst and highlighting the synergy between metal phosphide and solid acid support. m-Cresol conversion was proportional to Ni 2 P loading reaching 80 and 91% for 5 and 10 wt% Ni respectively. Turnover frequencies for m-cresol HDO are a strong function of Ni 2 P dispersion, evidencing a structure sensitivity, with optimum activity observed for 4 nm particles.
Subject Catalysis and Mechanisms of Reactions
Keyword(s) Hierarchical ZSM-5
Hydrodeoxygenation
m-cresol
Nickel phosphide
DOI - identifier 10.1016/j.cattod.2017.08.032
Copyright notice © 2017 Elsevier B.V.
ISSN 0920-5861
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