Ni based catalysts promoted with cerium used in the steam reforming of toluene for hydrogen production

Jihane Abou Rached; Christelle El Hayek; Eliane Dahdah; Cédric Gennequin; Samer Aouad; Haingomalala Lucette Tidahy; Jane Estephane; Bilal Nsouli; Antoine Aboukaïs; Edmond Abi-Aad

doi:10.1016/j.ijhydene.2016.10.053

Ni based catalysts promoted with cerium used in the steam reforming of toluene for hydrogen production

Jihane Abou Rached, Christelle El Hayek, Eliane Dahdah, Cédric Gennequin, Samer Aouad, Haingomalala Lucette Tidahy, Jane Estephane, Bilal Nsouli, Antoine Aboukaïs, Edmond Abi-Aad

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Ni_xMg_6−xAl_1.8Ce_0.2 (with 0 ≤ x ≤ 6) mixed oxides catalysts were prepared by hydrotalcite route. All the oxides were calcined at 800 °C and characterized by different physico-chemical methods. The catalysts are then reduced before their use in the steam reforming of toluene. The XRD and TG/DTA confirmed the formation of the hydrotalcite structure for the non-calcined samples. The N₂ adsorption/desorption results revealed that all catalysts correspond to mesoporous materials. The study by temperature programmed reduction (H₂-TPR) showed that the reducibility of the catalysts is influenced by the nickel content. The CO₂-TPD results showed that the catalyst with high magnesium content present the highest basicity. The Ni₂Mg₄Al_1.8Ce_0.2 shows the best toluene conversion among all the catalysts and it was then compared to a non-promoted catalyst. The spent catalysts were characterized by TPO, TG/DTA and XRD and they didn't reveal any coke formation.

Original language	English (US)
Pages (from-to)	12829-12840
Number of pages	12
Journal	International Journal of Hydrogen Energy
Volume	42
Issue number	17
DOIs	https://doi.org/10.1016/j.ijhydene.2016.10.053
State	Published - Apr 27 2017

Keywords

Basicity
Hydrogen
Hydrotalcite
Nickel
Steam reforming
Toluene

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

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10.1016/j.ijhydene.2016.10.053

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@article{704113f50b8541f0a1eedfabfcc2b227,

title = "Ni based catalysts promoted with cerium used in the steam reforming of toluene for hydrogen production",

abstract = "NixMg6−xAl1.8Ce0.2 (with 0 ≤ x ≤ 6) mixed oxides catalysts were prepared by hydrotalcite route. All the oxides were calcined at 800 °C and characterized by different physico-chemical methods. The catalysts are then reduced before their use in the steam reforming of toluene. The XRD and TG/DTA confirmed the formation of the hydrotalcite structure for the non-calcined samples. The N2 adsorption/desorption results revealed that all catalysts correspond to mesoporous materials. The study by temperature programmed reduction (H2-TPR) showed that the reducibility of the catalysts is influenced by the nickel content. The CO2-TPD results showed that the catalyst with high magnesium content present the highest basicity. The Ni2Mg4Al1.8Ce0.2 shows the best toluene conversion among all the catalysts and it was then compared to a non-promoted catalyst. The spent catalysts were characterized by TPO, TG/DTA and XRD and they didn't reveal any coke formation.",

keywords = "Basicity, Hydrogen, Hydrotalcite, Nickel, Steam reforming, Toluene",

author = "{Abou Rached}, Jihane and {El Hayek}, Christelle and Eliane Dahdah and C{\'e}dric Gennequin and Samer Aouad and Tidahy, {Haingomalala Lucette} and Jane Estephane and Bilal Nsouli and Antoine Abouka{\"i}s and Edmond Abi-Aad",

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year = "2017",

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day = "27",

doi = "10.1016/j.ijhydene.2016.10.053",

language = "English (US)",

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TY - JOUR

T1 - Ni based catalysts promoted with cerium used in the steam reforming of toluene for hydrogen production

AU - Abou Rached, Jihane

AU - El Hayek, Christelle

AU - Dahdah, Eliane

AU - Gennequin, Cédric

AU - Aouad, Samer

AU - Tidahy, Haingomalala Lucette

AU - Estephane, Jane

AU - Nsouli, Bilal

AU - Aboukaïs, Antoine

AU - Abi-Aad, Edmond

PY - 2017/4/27

Y1 - 2017/4/27

N2 - NixMg6−xAl1.8Ce0.2 (with 0 ≤ x ≤ 6) mixed oxides catalysts were prepared by hydrotalcite route. All the oxides were calcined at 800 °C and characterized by different physico-chemical methods. The catalysts are then reduced before their use in the steam reforming of toluene. The XRD and TG/DTA confirmed the formation of the hydrotalcite structure for the non-calcined samples. The N2 adsorption/desorption results revealed that all catalysts correspond to mesoporous materials. The study by temperature programmed reduction (H2-TPR) showed that the reducibility of the catalysts is influenced by the nickel content. The CO2-TPD results showed that the catalyst with high magnesium content present the highest basicity. The Ni2Mg4Al1.8Ce0.2 shows the best toluene conversion among all the catalysts and it was then compared to a non-promoted catalyst. The spent catalysts were characterized by TPO, TG/DTA and XRD and they didn't reveal any coke formation.

AB - NixMg6−xAl1.8Ce0.2 (with 0 ≤ x ≤ 6) mixed oxides catalysts were prepared by hydrotalcite route. All the oxides were calcined at 800 °C and characterized by different physico-chemical methods. The catalysts are then reduced before their use in the steam reforming of toluene. The XRD and TG/DTA confirmed the formation of the hydrotalcite structure for the non-calcined samples. The N2 adsorption/desorption results revealed that all catalysts correspond to mesoporous materials. The study by temperature programmed reduction (H2-TPR) showed that the reducibility of the catalysts is influenced by the nickel content. The CO2-TPD results showed that the catalyst with high magnesium content present the highest basicity. The Ni2Mg4Al1.8Ce0.2 shows the best toluene conversion among all the catalysts and it was then compared to a non-promoted catalyst. The spent catalysts were characterized by TPO, TG/DTA and XRD and they didn't reveal any coke formation.

KW - Basicity

KW - Hydrogen

KW - Hydrotalcite

KW - Nickel

KW - Steam reforming

KW - Toluene

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JF - International Journal of Hydrogen Energy

IS - 17

ER -

Ni based catalysts promoted with cerium used in the steam reforming of toluene for hydrogen production

Abstract

Keywords

ASJC Scopus subject areas

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