Designing supported ZnNi catalysts for the removal of oxygen from bio-liquids and aromatics from diesel

C. V. Loricera; P. Castaño; A. Infantes-Molina; I. Hita; A. Gutiérrez; J. M. Arandes; J. L.G. Fierro; B. Pawelec

doi:10.1039/c2gc35901d

Designing supported ZnNi catalysts for the removal of oxygen from bio-liquids and aromatics from diesel

C. V. Loricera, P. Castaño, A. Infantes-Molina, I. Hita, A. Gutiérrez, J. M. Arandes, J. L.G. Fierro, B. Pawelec

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Abstract

This work describes the effect of the support (TiO2, hybrid 2TiO2-SiO2, SBA-15 and SBA-15 decorated with TiO 2 particles) on the catalytic activity of ZnNi catalysts in the gas-phase hydrodeoxygenation (HDO or O-removal) of phenol and the liquid-phase hydrodearomatization (HDA) of synthetic diesel. These reactions are representative of the two major challenges of the hydrotreating unit embedded in a sustainable refinery: (i) decreasing oxygen content of bio-oils (produced in the pyrolysis of lignocellulosic biomass); and (ii) decreasing aromatics content in diesel. The fresh and deactivated catalysts were characterized by XRD, N2 adsorption-desorption, TPR, MS/TPD-NH3, XPS, SEM, HRTEM and coke combustion. Under steady-state conditions, the ZnNi catalyst supported on SBA-15 decorated with TiO2 particles displayed the highest activity in the hydrodeoxygenation of phenol (selectivity toward deoxygenated products > 95%) whereas the ZnNi/SBA-15 catalyst displayed the highest activity in the hydrodearomatization of synthetic diesel. It has been shown that dispersion of the active ingredient is favoured on the SBA-15 substrate. The relationship between structure and activity demonstrated that HDO and HDA reactions require optimized metal dispersion and acid function, metal dispersion being more important for HDA than for HDO reactions. © 2012 The Royal Society of Chemistry.

Original language	English (US)
Journal	Green Chemistry
Volume	14
Issue number	10
DOIs	https://doi.org/10.1039/c2gc35901d
State	Published - Oct 1 2012
Externally published	Yes

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@article{a0d6783be803450aaafe39145484acf2,

title = "Designing supported ZnNi catalysts for the removal of oxygen from bio-liquids and aromatics from diesel",

abstract = "This work describes the effect of the support (TiO2, hybrid 2TiO2-SiO2, SBA-15 and SBA-15 decorated with TiO 2 particles) on the catalytic activity of ZnNi catalysts in the gas-phase hydrodeoxygenation (HDO or O-removal) of phenol and the liquid-phase hydrodearomatization (HDA) of synthetic diesel. These reactions are representative of the two major challenges of the hydrotreating unit embedded in a sustainable refinery: (i) decreasing oxygen content of bio-oils (produced in the pyrolysis of lignocellulosic biomass); and (ii) decreasing aromatics content in diesel. The fresh and deactivated catalysts were characterized by XRD, N2 adsorption-desorption, TPR, MS/TPD-NH3, XPS, SEM, HRTEM and coke combustion. Under steady-state conditions, the ZnNi catalyst supported on SBA-15 decorated with TiO2 particles displayed the highest activity in the hydrodeoxygenation of phenol (selectivity toward deoxygenated products > 95%) whereas the ZnNi/SBA-15 catalyst displayed the highest activity in the hydrodearomatization of synthetic diesel. It has been shown that dispersion of the active ingredient is favoured on the SBA-15 substrate. The relationship between structure and activity demonstrated that HDO and HDA reactions require optimized metal dispersion and acid function, metal dispersion being more important for HDA than for HDO reactions. {\textcopyright} 2012 The Royal Society of Chemistry.",

author = "Loricera, {C. V.} and P. Casta{\~n}o and A. Infantes-Molina and I. Hita and A. Guti{\'e}rrez and Arandes, {J. M.} and Fierro, {J. L.G.} and B. Pawelec",

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AU - Loricera, C. V.

AU - Castaño, P.

AU - Infantes-Molina, A.

AU - Hita, I.

AU - Gutiérrez, A.

AU - Arandes, J. M.

AU - Fierro, J. L.G.

AU - Pawelec, B.

N1 - Generated from Scopus record by KAUST IRTS on 2019-08-08

PY - 2012/10/1

Y1 - 2012/10/1

N2 - This work describes the effect of the support (TiO2, hybrid 2TiO2-SiO2, SBA-15 and SBA-15 decorated with TiO 2 particles) on the catalytic activity of ZnNi catalysts in the gas-phase hydrodeoxygenation (HDO or O-removal) of phenol and the liquid-phase hydrodearomatization (HDA) of synthetic diesel. These reactions are representative of the two major challenges of the hydrotreating unit embedded in a sustainable refinery: (i) decreasing oxygen content of bio-oils (produced in the pyrolysis of lignocellulosic biomass); and (ii) decreasing aromatics content in diesel. The fresh and deactivated catalysts were characterized by XRD, N2 adsorption-desorption, TPR, MS/TPD-NH3, XPS, SEM, HRTEM and coke combustion. Under steady-state conditions, the ZnNi catalyst supported on SBA-15 decorated with TiO2 particles displayed the highest activity in the hydrodeoxygenation of phenol (selectivity toward deoxygenated products > 95%) whereas the ZnNi/SBA-15 catalyst displayed the highest activity in the hydrodearomatization of synthetic diesel. It has been shown that dispersion of the active ingredient is favoured on the SBA-15 substrate. The relationship between structure and activity demonstrated that HDO and HDA reactions require optimized metal dispersion and acid function, metal dispersion being more important for HDA than for HDO reactions. © 2012 The Royal Society of Chemistry.

AB - This work describes the effect of the support (TiO2, hybrid 2TiO2-SiO2, SBA-15 and SBA-15 decorated with TiO 2 particles) on the catalytic activity of ZnNi catalysts in the gas-phase hydrodeoxygenation (HDO or O-removal) of phenol and the liquid-phase hydrodearomatization (HDA) of synthetic diesel. These reactions are representative of the two major challenges of the hydrotreating unit embedded in a sustainable refinery: (i) decreasing oxygen content of bio-oils (produced in the pyrolysis of lignocellulosic biomass); and (ii) decreasing aromatics content in diesel. The fresh and deactivated catalysts were characterized by XRD, N2 adsorption-desorption, TPR, MS/TPD-NH3, XPS, SEM, HRTEM and coke combustion. Under steady-state conditions, the ZnNi catalyst supported on SBA-15 decorated with TiO2 particles displayed the highest activity in the hydrodeoxygenation of phenol (selectivity toward deoxygenated products > 95%) whereas the ZnNi/SBA-15 catalyst displayed the highest activity in the hydrodearomatization of synthetic diesel. It has been shown that dispersion of the active ingredient is favoured on the SBA-15 substrate. The relationship between structure and activity demonstrated that HDO and HDA reactions require optimized metal dispersion and acid function, metal dispersion being more important for HDA than for HDO reactions. © 2012 The Royal Society of Chemistry.

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DO - 10.1039/c2gc35901d

M3 - Article

SN - 1463-9262

VL - 14

JO - Green Chemistry

JF - Green Chemistry

IS - 10

ER -

Designing supported ZnNi catalysts for the removal of oxygen from bio-liquids and aromatics from diesel

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