Influence of the initial state of ZrO2 on genesis, activity and stability of Ni/ZrO2 catalysts for steam reforming of glycerol

Sh O. Omarov; D. A. Sladkovskiy; K. D. Martinson; M. Peurla; A. Aho; D. Yu Murzin; V. I. Popkov

doi:10.1016/j.apcata.2021.118098

Influence of the initial state of ZrO₂ on genesis, activity and stability of Ni/ZrO₂ catalysts for steam reforming of glycerol

Sh O. Omarov, D. A. Sladkovskiy, K. D. Martinson, M. Peurla, A. Aho, D. Yu Murzin^*, V. I. Popkov

^*Corresponding author for this work

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

22 Citations (Scopus)

Abstract

The effect of the initial state of ZrO₂ on properties of Ni/ZrO₂ catalysts for hydrogen production in steam reforming of glycerol was investigated. The catalysts were synthesized by impregnating the supports obtained by varying the treatment temperature of ZrO₂‧nH₂O and introducing Y₂O₃ as a promoter. All materials were characterized by thermal analysis, X-ray diffraction, N₂ physisorption, scanning electron microscopy, H₂-TPR, NH₃-TPD and transmission electron microscopy. The mutual influence of NiO and ZrO₂ on the genesis of the phase composition, pore structure and reducibility was demonstrated. Different catalytic behavior is explained by influence of the initial form of the support on the size, morphology of Ni particles, and the support thermal stability. The initial activity of Ni/ZrO₂is proportional to the monoclinic phase content. The catalysts based on tetragonal ZrO₂ displayed the best stability. For the first time, the presence of the aldol condensation products in glycerol steam reforming was demonstrated.

Original language	English
Article number	118098
Journal	Applied Catalysis A: General
Volume	616
DOIs	https://doi.org/10.1016/j.apcata.2021.118098
Publication status	Published - 25 Apr 2021
MoE publication type	A1 Journal article-refereed

Keywords

Activity
Glycerol
Nickel
Stability
Steam reforming
Zirconia

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title = "Influence of the initial state of ZrO2 on genesis, activity and stability of Ni/ZrO2 catalysts for steam reforming of glycerol",

abstract = "The effect of the initial state of ZrO2 on properties of Ni/ZrO2 catalysts for hydrogen production in steam reforming of glycerol was investigated. The catalysts were synthesized by impregnating the supports obtained by varying the treatment temperature of ZrO2‧nH2O and introducing Y2O3 as a promoter. All materials were characterized by thermal analysis, X-ray diffraction, N2 physisorption, scanning electron microscopy, H2-TPR, NH3-TPD and transmission electron microscopy. The mutual influence of NiO and ZrO2 on the genesis of the phase composition, pore structure and reducibility was demonstrated. Different catalytic behavior is explained by influence of the initial form of the support on the size, morphology of Ni particles, and the support thermal stability. The initial activity of Ni/ZrO2is proportional to the monoclinic phase content. The catalysts based on tetragonal ZrO2 displayed the best stability. For the first time, the presence of the aldol condensation products in glycerol steam reforming was demonstrated.",

keywords = "Activity, Glycerol, Nickel, Stability, Steam reforming, Zirconia",

author = "Omarov, {Sh O.} and Sladkovskiy, {D. A.} and Martinson, {K. D.} and M. Peurla and A. Aho and Murzin, {D. Yu} and Popkov, {V. I.}",

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AU - Omarov, Sh O.

AU - Sladkovskiy, D. A.

AU - Martinson, K. D.

AU - Peurla, M.

AU - Aho, A.

AU - Murzin, D. Yu

AU - Popkov, V. I.

PY - 2021/4/25

Y1 - 2021/4/25

N2 - The effect of the initial state of ZrO2 on properties of Ni/ZrO2 catalysts for hydrogen production in steam reforming of glycerol was investigated. The catalysts were synthesized by impregnating the supports obtained by varying the treatment temperature of ZrO2‧nH2O and introducing Y2O3 as a promoter. All materials were characterized by thermal analysis, X-ray diffraction, N2 physisorption, scanning electron microscopy, H2-TPR, NH3-TPD and transmission electron microscopy. The mutual influence of NiO and ZrO2 on the genesis of the phase composition, pore structure and reducibility was demonstrated. Different catalytic behavior is explained by influence of the initial form of the support on the size, morphology of Ni particles, and the support thermal stability. The initial activity of Ni/ZrO2is proportional to the monoclinic phase content. The catalysts based on tetragonal ZrO2 displayed the best stability. For the first time, the presence of the aldol condensation products in glycerol steam reforming was demonstrated.

AB - The effect of the initial state of ZrO2 on properties of Ni/ZrO2 catalysts for hydrogen production in steam reforming of glycerol was investigated. The catalysts were synthesized by impregnating the supports obtained by varying the treatment temperature of ZrO2‧nH2O and introducing Y2O3 as a promoter. All materials were characterized by thermal analysis, X-ray diffraction, N2 physisorption, scanning electron microscopy, H2-TPR, NH3-TPD and transmission electron microscopy. The mutual influence of NiO and ZrO2 on the genesis of the phase composition, pore structure and reducibility was demonstrated. Different catalytic behavior is explained by influence of the initial form of the support on the size, morphology of Ni particles, and the support thermal stability. The initial activity of Ni/ZrO2is proportional to the monoclinic phase content. The catalysts based on tetragonal ZrO2 displayed the best stability. For the first time, the presence of the aldol condensation products in glycerol steam reforming was demonstrated.

KW - Activity

KW - Glycerol

KW - Nickel

KW - Stability

KW - Steam reforming

KW - Zirconia

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Influence of the initial state of ZrO₂ on genesis, activity and stability of Ni/ZrO₂ catalysts for steam reforming of glycerol

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Keywords

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