Support effect on Ni-based mono- and bimetallic catalysts in CO2 hydrogenation

Jihao Wang; Shilong Chen; Pierfrancesco Ticali; Paulina Summa; Simon Mai; Katarzyna Skorupska; Malte Behrens

doi:10.1039/D4NR02025A

Support effect on Ni-based mono- and bimetallic catalysts in CO₂ hydrogenation†

Jihao Wang,^a Shilong Chen,

*^a Pierfrancesco Ticali,

^a Paulina Summa,^b Simon Mai,^a Katarzyna Skorupska

^b and Malte Behrens

*^a

Author affiliations

* Corresponding authors

^a Institute of Inorganic Chemistry, Kiel University, Max-Eyth-Str. 2, 24118 Kiel, Germany
E-mail: schen@ac.uni-kiel.de, mbehrens@ac.uni-kiel.de

^b Department of Inorganic Chemistry, Fritz-Haber-Institute of the Max-Planck-Society, Faradayweg 4-6, 14195 Berlin, Germany

Abstract

Aiming at a comprehensive understanding of support effects on Ni-based bimetallic catalyst for CO₂ hydrogenation, spectroscopy (DRIFTS) with CO as a probe molecule and temperature-programmed techniques were used to investigate the impact of different supports (MgO, CeO₂, ZrO₂) on Ni- and Ni,Fe catalysts. Kinetic parameters revealed that the higher selectivity to methanation for Ni and Ni,Fe supported on the reducible oxides (CeO₂, ZrO₂) is due to the inhibition of reverse water-gas shift reaction (RWGS) by hydrogen. A promoting effect of Fe on Ni was only observed on MgO-supported catalysts. In situ DRIFTS with CO adsorption showed different electronic properties of Ni sites with partially reduced oxide (i.e. ZrO₂ and CeO₂). H₂-TPR and CO₂-TPD confirmed the significant role of metal-support interaction (MSI) in CeO₂-supported catalysts for CO₂ activation. The MSI between Ni/Ni,Fe and reducible supports are crucial for catalytic performance, ultimately leading to the higher activity and stability in CO₂ hydrogenation.

This article is part of the themed collection: Nanocatalysis

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Article information

DOI: https://doi.org/10.1039/D4NR02025A
Article type: Paper
Submitted: 10 Maijs 2024
Accepted: 12 Aug. 2024
First published: 15 Aug. 2024
This article is Open Access

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Nanoscale, 2024,16, 17378-17392

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Support effect on Ni-based mono- and bimetallic catalysts in CO₂ hydrogenation

J. Wang, S. Chen, P. Ticali, P. Summa, S. Mai, K. Skorupska and M. Behrens, Nanoscale, 2024, 16, 17378 DOI: 10.1039/D4NR02025A

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