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Wolf M, de Oliveira AL, Taccardi N, Maisel S, Heller M, Khan Antara S, Søgaard A, Felfer P, Görling A, Haumann M, Wasserscheid P. Dry reforming of methane over gallium-based supported catalytically active liquid metal solutions. Commun Chem 2023; 6:224. [PMID: 37853170 PMCID: PMC10584823 DOI: 10.1038/s42004-023-01018-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 10/02/2023] [Indexed: 10/20/2023] Open
Abstract
Gallium-rich supported catalytically active liquid metal solutions (SCALMS) were recently introduced as a new way towards heterogeneous single atom catalysis. SCALMS were demonstrated to exhibit a certain resistance against coking during the dehydrogenation of alkanes using Ga-rich alloys of noble metals. Here, the conceptual catalytic application of SCALMS in dry reforming of methane (DRM) is tested with non-noble metal (Co, Cu, Fe, Ni) atoms in the gallium-rich liquid alloy. This study introduces SCALMS to high-temperature applications and an oxidative reaction environment. Most catalysts were shown to undergo severe oxidation during DRM, while Ga-Ni SCALMS retained a certain level of activity. This observation is explained by a kinetically controlled redox process, namely oxidation to gallium oxide species and re-reduction via H2 activation over Ni. Consequentially, this redox process can be shifted to the metallic side when using increasing concentrations of Ni in Ga, which strongly suppresses coke formation. Density-functional theory (DFT) based ab initio molecular dynamics (AIMD) simulations were performed to confirm the increased availability of Ni at the liquid alloy-gas interface. However, leaching of gallium via the formation of volatile oxidic species during the hypothesised redox cycles was identified indicating a critical instability of Ga-Ni SCALMS for prolonged test durations.
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Affiliation(s)
- Moritz Wolf
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058, Erlangen, Germany
- Forschungszentrum Jülich, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK 11), Cauerstr. 1, 91058, Erlangen, Germany
| | - Ana Luiza de Oliveira
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058, Erlangen, Germany
- Forschungszentrum Jülich, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK 11), Cauerstr. 1, 91058, Erlangen, Germany
| | - Nicola Taccardi
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058, Erlangen, Germany
| | - Sven Maisel
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Theoretische Chemie, Egerlandstr. 3, 91058, Erlangen, Germany
| | - Martina Heller
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften), Martensstr. 5, 91058, Erlangen, Germany
| | - Sharmin Khan Antara
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058, Erlangen, Germany
| | - Alexander Søgaard
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058, Erlangen, Germany
| | - Peter Felfer
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften), Martensstr. 5, 91058, Erlangen, Germany
| | - Andreas Görling
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Theoretische Chemie, Egerlandstr. 3, 91058, Erlangen, Germany
| | - Marco Haumann
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058, Erlangen, Germany
| | - Peter Wasserscheid
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik (CRT), Egerlandstr. 3, 91058, Erlangen, Germany.
- Forschungszentrum Jülich, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK 11), Cauerstr. 1, 91058, Erlangen, Germany.
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Simons JM, de Heer TJ, van de Poll RCJ, Muravev V, Kosinov N, Hensen EJM. Structure Sensitivity of CO 2 Hydrogenation on Ni Revisited. J Am Chem Soc 2023; 145:20289-20301. [PMID: 37677099 PMCID: PMC10515628 DOI: 10.1021/jacs.3c04284] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Indexed: 09/09/2023]
Abstract
Despite the large number of studies on the catalytic hydrogenation of CO2 to CO and hydrocarbons by metal nanoparticles, the nature of the active sites and the reaction mechanism have remained unresolved. This hampers the development of effective catalysts relevant to energy storage. By investigating the structure sensitivity of CO2 hydrogenation on a set of silica-supported Ni nanoparticle catalysts (2-12 nm), we found that the active sites responsible for the conversion of CO2 to CO are different from those for the subsequent hydrogenation of CO to CH4. While the former reaction step is weakly dependent on the nanoparticle size, the latter is strongly structure sensitive with particles below 5 nm losing their methanation activity. Operando X-ray diffraction and X-ray absorption spectroscopy results showed that significant oxidation or restructuring, which could be responsible for the observed differences in CO2 hydrogenation rates, was absent. Instead, the decreased methanation activity and the related higher CO selectivity on small nanoparticles was linked to a lower availability of step edges that are active for CO dissociation. Operando infrared spectroscopy coupled with (isotopic) transient experiments revealed the dynamics of surface species on the Ni surface during CO2 hydrogenation and demonstrated that direct dissociation of CO2 to CO is followed by the conversion of strongly bonded carbonyls to CH4. These findings provide essential insights into the much debated structure sensitivity of CO2 hydrogenation reactions and are key for the knowledge-driven design of highly active and selective catalysts.
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Affiliation(s)
- Jérôme
F. M. Simons
- Laboratory of Inorganic Materials and
Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Ton J. de Heer
- Laboratory of Inorganic Materials and
Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Rim C. J. van de Poll
- Laboratory of Inorganic Materials and
Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Valery Muravev
- Laboratory of Inorganic Materials and
Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Nikolay Kosinov
- Laboratory of Inorganic Materials and
Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials and
Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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Ádám AA, Ziegenheim S, Papp Á, Szabados M, Kónya Z, Kukovecz Á, Varga G. Nickel nanoparticles for liquid phase toluene oxidation – Phenomenon, opportunities and challenges. ChemCatChem 2022. [DOI: 10.1002/cctc.202200700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Adél Anna Ádám
- University of Szeged Faculty of Science and Informatics: Szegedi Tudomanyegyetem Termeszettudomanyi es Informatikai Kar Department of Organic Chemistry Dóm tér 8. 6720 Szeged HUNGARY
| | - Szilveszter Ziegenheim
- University of Szeged Faculty of Science and Informatics: Szegedi Tudomanyegyetem Termeszettudomanyi es Informatikai Kar Department of Organic Chemistry Dóm tér 8. 6720 Szeged HUNGARY
| | - Ádám Papp
- University of Szeged Faculty of Science and Informatics: Szegedi Tudomanyegyetem Termeszettudomanyi es Informatikai Kar Department of Organic Chemistry Dóm tér 8. 6720 Szeged HUNGARY
| | - Márton Szabados
- University of Szeged Faculty of Science and Informatics: Szegedi Tudomanyegyetem Termeszettudomanyi es Informatikai Kar Department of Organic Chemistry Dóm tér 8. 6720 Szeged HUNGARY
| | - Zoltán Kónya
- University of Szeged Faculty of Science and Informatics: Szegedi Tudomanyegyetem Termeszettudomanyi es Informatikai Kar Applied and Environmental Chemistry Department Rerrich Béla tér 1. 6720 Szeged HUNGARY
| | - Ákos Kukovecz
- University of Szeged Faculty of Science and Informatics: Szegedi Tudomanyegyetem Termeszettudomanyi es Informatikai Kar Applied and Environmental Chemistry Department Rerrich Béla tér 1. 6720 Szeged HUNGARY
| | - Gábor Varga
- Szegedi Tudományegyetem Természettudományi és Informatikai Karának: Szegedi Tudomanyegyetem Termeszettudomanyi es Informatikai Kar Department of Physical Chemistry and Materials Science Rerrich Béla sq. 1. 6720 Szeged HUNGARY
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