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Hydrogen Production Mechanism in Low-Temperature Methanol Decomposition Catalyzed by Ni3Sn4 Intermetallic Compound: A Combined Operando and Density Functional Theory Investigation
Abstract
Hydrogen production from methanol decomposition to syngas (H2 + CO) is a promising alternative route for clean energy transition. One major challenge is related to the quest for stable, cost-effective, and selective catalysts operating below 400 °C. We illustrate an investigation of the surface reactivity of a Ni3Sn4 catalyst working at 250 °C, by combining density functional theory, operando X-ray absorption spectroscopy, and high-resolution transmission electron microscopy. We discovered that the catalytic reaction is driven by surface tin-oxide phases, which protects the underlying Ni atoms from irreversible chemical modifications, increasing the catalyst durability. Moreover, we found that Sn content plays a key role in enhancing the H2 selectivity, with respect to secondary products such as CO2. These findings open new perspectives for the engineering of scalable and low-cost catalysts for hydrogen production.
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Authors (12)
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Silvia Mauri
- University of Trieste
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Gianluca D'Olimpio
- University of L’Aquila
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Corneliu Ghica
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Luca Braglia
- University of Trieste
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Chia-Nung Kuo
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Marian Cosmin Istrate Dr
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Chin Shan Lue
- Nanjing Forestry University
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Luca Ottaviano
- University of L’Aquila
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Danil W. Boukhvalov
- Nanjing Forestry University
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Antonio Politano
- University of L’Aquila
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Piero Torelli
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Journal of Physical Chemistry Letters
no. 14,
pages 1334 - 1342,
ISSN: 1948-7185 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Mauri S., D'Olimpio G., Ghica C., Braglia L., Kuo C., Istrate M. C., Lue C. S., Ottaviano L., Klimczuk T., Boukhvalov D. W., Politano A., Torelli P.: Hydrogen Production Mechanism in Low-Temperature Methanol Decomposition Catalyzed by Ni3Sn4 Intermetallic Compound: A Combined Operando and Density Functional Theory Investigation// Journal of Physical Chemistry Letters -Vol. 14,iss. 5 (2023), s.1334-1342
- DOI:
- Digital Object Identifier (open in new tab) 10.1021/acs.jpclett.2c03471
- Sources of funding:
-
- COST_FREE
- Verified by:
- Gdańsk University of Technology
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