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Mauri S, D'Olimpio G, Ghica C, Braglia L, Kuo CN, Istrate MC, Lue CS, Ottaviano L, Klimczuk T, Boukhvalov DW, Politano A, Torelli P. Hydrogen Production Mechanism in Low-Temperature Methanol Decomposition Catalyzed by Ni 3Sn 4 Intermetallic Compound: A Combined Operando and Density Functional Theory Investigation. J Phys Chem Lett 2023; 14:1334-1342. [PMID: 36727689 DOI: 10.1021/acs.jpclett.2c03471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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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Affiliation(s)
- Silvia Mauri
- CNR─Istituto Officina dei Materiali, TASC, I-34149Trieste, Italy
- Department of Physics, University of Trieste, Via Valerio 2, 34127Trieste, Italy
| | - Gianluca D'Olimpio
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio, 67100L'Aquila, Italy
| | - Corneliu Ghica
- National Institute of Materials Physics, Atomistilor 405A, 077125Magurele, Romania
| | - Luca Braglia
- CNR─Istituto Officina dei Materiali, TASC, I-34149Trieste, Italy
| | - Chia-Nung Kuo
- Department of Physics, National Cheng Kung University, 1 Ta-Hsueh Road, Tainan70101, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials, Ministry of Science and Technology, Taipei10601, Taiwan
| | | | - Chin Shan Lue
- Department of Physics, National Cheng Kung University, 1 Ta-Hsueh Road, Tainan70101, Taiwan
- Taiwan Consortium of Emergent Crystalline Materials, Ministry of Science and Technology, Taipei10601, Taiwan
| | - Luca Ottaviano
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio, 67100L'Aquila, Italy
| | - Tomasz Klimczuk
- Department of Solid-State Physics, Gdansk University of Technology, 80-233Gdansk, Poland
| | - Danil W Boukhvalov
- College of Science, Institute of Materials Physics and Chemistry, Nanjing Forestry University, Nanjing210037, People's Republic of China
| | - Antonio Politano
- Department of Physical and Chemical Sciences, University of L'Aquila, Via Vetoio, 67100L'Aquila, Italy
| | - Piero Torelli
- CNR─Istituto Officina dei Materiali, TASC, I-34149Trieste, Italy
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Hernández-Fontes C, Araiza DG, Díaz G, Pfeiffer H. Insight into CO selective chemisorption from syngas mixtures through Li 2MnO 3; a new H 2 enrichment material. REACT CHEM ENG 2023. [DOI: 10.1039/d2re00382a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Li2MnO3 is able to selectively trap CO in the presence of H2 at high temperatures, favoring H2 enrichment from syngas flows.
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Affiliation(s)
- Carlos Hernández-Fontes
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, Del. Coyoacán, Ciudad de México, CP 04510, Mexico
| | - Daniel G. Araiza
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, Del. Coyoacán, Ciudad de México, CP 04510, Mexico
| | - Gabriela Díaz
- Instituto de Física, Departamento de Física Química, Universidad Nacional Autónoma de México, Ciudad de México, CP 04510, Mexico
| | - Heriberto Pfeiffer
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito exterior s/n, Ciudad Universitaria, Del. Coyoacán, Ciudad de México, CP 04510, Mexico
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Cobalt-Ceria Catalysts for the Methanol Decomposition: Insights in the Long-Term Stability and Methanol Interaction. Top Catal 2022. [DOI: 10.1007/s11244-022-01667-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Park SJ, Kang SH, Min HK, Choi YH, Lee JW. Depolymerization of polystyrene over Mgx-Aly-O catalysts derived from hydrotalcites: Effect of Mg/Al ratio on the basicity and catalytic performance. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111546] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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