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Zhou C, Liccardo G, Hoffman AS, Oh J, Holmes SE, Vailionis A, Bare SR, Cargnello M. Understanding and Harnessing Nanoscale Immiscibility in Ru-In Alloys for Selective CO 2 Hydrogenation. J Am Chem Soc 2024; 146:19986-19997. [PMID: 38985019 DOI: 10.1021/jacs.4c03652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Bimetallic alloys made from immiscible elements are characterized by their tendency to segregate on the macroscopic scale, but their behavior is known to change at the nanoscale. Here, we demonstrate that in the Ru-In system, In atoms preferentially decorate the surface of 6 nm Ru nanoparticles, forming Ru-In superficial immiscible alloys. This surface decoration dramatically affects the catalytic performance of the system, even at small atomic fractions of In added to Ru. The interfaces between Ru and In enabled unexplored methanol productivity from CO2 hydrogenation, which outperformed not only the individual constituents but also ordered RuIn3 intermetallic alloys. Our work highlights that the formation of superficial immiscible alloys could offer new insights into the understanding and design of heterogeneous catalysts.
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Affiliation(s)
- Chengshuang Zhou
- Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, Stanford, California 94305, United States
| | - Gennaro Liccardo
- Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, Stanford, California 94305, United States
| | - Adam S Hoffman
- SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Jinwon Oh
- Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, United States
| | - Sarah E Holmes
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Arturas Vailionis
- Stanford Nano Shared Facilities, Stanford University, Stanford, California 94305, United States
- Department of Physics, Kaunas University of Technology, LT-51368 Kaunas, Lithuania
| | - Simon R Bare
- SSRL, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Matteo Cargnello
- Department of Chemical Engineering and SUNCAT Center for Interface Science and Catalysis, Stanford University, Stanford, California 94305, United States
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Goodarzi F, Kock M, Mielby J, Kegnæs S. CO2 methanation using metals nanoparticles supported on high surface area MgO. J CO2 UTIL 2023. [DOI: 10.1016/j.jcou.2023.102396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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3
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Tarifa P, Megías-Sayago C, Cazaña F, González-Martín M, Latorre N, Romeo E, Delgado JJ, Monzón A. Highly Active Ce- and Mg-Promoted Ni Catalysts Supported on Cellulose-Derived Carbon for Low-Temperature CO 2 Methanation. ENERGY & FUELS : AN AMERICAN CHEMICAL SOCIETY JOURNAL 2021; 35:17212-17224. [PMID: 35663907 PMCID: PMC9161724 DOI: 10.1021/acs.energyfuels.1c01682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/23/2021] [Indexed: 06/15/2023]
Abstract
The CO2 methanation performance of Mg- and/or Ce-promoted Ni catalysts supported on cellulose-derived carbon (CDC) was investigated. The samples, prepared by biomorphic mineralization techniques, exhibit pore distributions correlated to the particle sizes, revealing a direct effect of the metal content in the textural properties of the samples. The catalytic performance, evaluated as CO2 conversion and CH4 selectivity, reveals that Ce is a better promoter than Mg, reaching higher conversion values in all of the studied temperature range (150-500 °C). In the interval of 350-400 °C, Ni-Mg-Ce/CDC attains the maximum yield to methane, 80%, reaching near 100% CH4 selectivity. Ce-promoted catalysts were highly active at low temperatures (175 °C), achieving 54% CO2 conversion with near 100% CH4 selectivity. Furthermore, the large potential stability of the Ni-Mg-Ce/CDC catalyst during consecutive cycles of reaction opens a promising route for the optimization of the Sabatier process using this type of catalyst.
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Affiliation(s)
- Pilar Tarifa
- Department
of Chemical and Environmental Engineering, Instituto de Nanociencia
y Materiales de Aragón (INMA), Consejo
Superior de Investigaciones Científicas (CSIC)−University
of Zaragoza, E-50018 Zaragoza, Spain
| | - Cristina Megías-Sayago
- Department
of Chemical and Environmental Engineering, Instituto de Nanociencia
y Materiales de Aragón (INMA), Consejo
Superior de Investigaciones Científicas (CSIC)−University
of Zaragoza, E-50018 Zaragoza, Spain
| | - Fernando Cazaña
- Department
of Chemical and Environmental Engineering, Instituto de Nanociencia
y Materiales de Aragón (INMA), Consejo
Superior de Investigaciones Científicas (CSIC)−University
of Zaragoza, E-50018 Zaragoza, Spain
| | - Miguel González-Martín
- Department
of Chemical and Environmental Engineering, Instituto de Nanociencia
y Materiales de Aragón (INMA), Consejo
Superior de Investigaciones Científicas (CSIC)−University
of Zaragoza, E-50018 Zaragoza, Spain
| | - Nieves Latorre
- Department
of Chemical and Environmental Engineering, Instituto de Nanociencia
y Materiales de Aragón (INMA), Consejo
Superior de Investigaciones Científicas (CSIC)−University
of Zaragoza, E-50018 Zaragoza, Spain
| | - Eva Romeo
- Department
of Chemical and Environmental Engineering, Instituto de Nanociencia
y Materiales de Aragón (INMA), Consejo
Superior de Investigaciones Científicas (CSIC)−University
of Zaragoza, E-50018 Zaragoza, Spain
| | - Juan José Delgado
- Department
of Materials Science, Metallurgical Engineering and Inorganic Chemistry, University of Cádiz, E-11510 Puerto
Real, Spain
| | - Antonio Monzón
- Department
of Chemical and Environmental Engineering, Instituto de Nanociencia
y Materiales de Aragón (INMA), Consejo
Superior de Investigaciones Científicas (CSIC)−University
of Zaragoza, E-50018 Zaragoza, Spain
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Kokka A, Petala A, Panagiotopoulou P. Support Effects on the Activity of Ni Catalysts for the Propane Steam Reforming Reaction. NANOMATERIALS 2021; 11:nano11081948. [PMID: 34443775 PMCID: PMC8400253 DOI: 10.3390/nano11081948] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/19/2021] [Accepted: 07/27/2021] [Indexed: 11/30/2022]
Abstract
The catalytic performance of supported Ni catalysts for the propane steam reforming reaction was investigated with respect to the nature of the support. It was found that Ni is much more active when supported on ZrO2 or YSZ compared to TiO2, whereas Al2O3− and CeO2-supported catalysts exhibit intermediate performance. The turnover frequency (TOF) of C3H8 conversion increases by more than one order of magnitude in the order Ni/TiO2 < Ni/CeO2 < Ni/Al2O3 < Ni/YSZ < Ni/ZrO2, accompanied by a parallel increase of the selectivity toward the intermediate methane produced. In situ FTIR experiments indicate that CHx species produced via the dissociative adsorption of propane are the key reaction intermediates, with their hydrogenation to CH4 and/or conversion to formates and, eventually, to CO, being favored over the most active Ni/ZrO2 catalyst. Long term stability test showed that Ni/ZrO2 exhibits excellent stability for more than 30 h on stream and thus, it can be considered as a suitable catalyst for the production of H2 via propane steam reforming.
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Affiliation(s)
- Aliki Kokka
- School of Chemical and Environmental Engineering, Technical University of Crete, 73100 Chania, Greece;
| | - Athanasia Petala
- Department of Chemical Engineering, University of Patras, 26504 Patras, Greece;
| | - Paraskevi Panagiotopoulou
- School of Chemical and Environmental Engineering, Technical University of Crete, 73100 Chania, Greece;
- Correspondence: ; Tel.: +30-28210-37770
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