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

被引：76

作者：

Berenguer, Antonio ^{[1
]}

Bennett, James A. ^{[2
]}

Hunns, James ^{[2
]}

Moreno, Ines ^{[1
,3
]}

Coronado, Juan M. ^{[1
]}

Lee, Adam F. ^{[2
]}

Pizarro, Patricia ^{[1
,3
]}

Wilson, Karen ^{[2
]}

Serrano, David P. ^{[1
,3
]}

机构：

[1] IMDEA Energy Inst, Thermochem Proc Unit, Avda Ramon La Sagra 3, Madrid 28935, Spain

[2] Aston Univ, European Bioenergy Res Inst, Birmingham B4 7ET, W Midlands, England

[3] Rey Juan Carlos Univ, ESCET, Chem & Environm Engn Grp, C Tulipan S-N, Madrid 28933, Spain

来源：

CATALYSIS TODAY | 2018年 / 304卷

基金：

英国工程与自然科学研究理事会;

关键词：

Hydrodeoxygenation; m-cresol; Nickel phosphide; Hierarchical ZSM-5; NICKEL PHOSPHIDE CATALYSTS; ORDERED MESOPOROUS MATERIALS; BIO-OIL HYDRODEOXYGENATION; LIGNIN MODEL COMPOUNDS; HIERARCHICAL ZEOLITES; MOLECULAR-SIEVES; FAST PYROLYSIS; ACTIVE-SITES; CO CATALYSTS; METAL;

D O I：

10.1016/j.cattod.2017.08.032

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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 Bronsted acid sites attributed to the presence of P-OH 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.

引用

页码：72 / 79

页数：8

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