1
|
Yang Q, Surin I, Geiger J, Eliasson H, Agrachev M, Kondratenko VA, Zanina A, Krumeich F, Jeschke G, Erni R, Kondratenko EV, López N, Pérez-Ramírez J. Lattice-Stabilized Chromium Atoms on Ceria for N 2O Synthesis. ACS Catal 2023; 13:15977-15990. [PMID: 38125976 PMCID: PMC10728900 DOI: 10.1021/acscatal.3c04463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023]
Abstract
The development of selective catalysts for direct conversion of ammonia into nitrous oxide, N2O, will circumvent the conventional five-step manufacturing process and enable its wider utilization in oxidation catalysis. Deviating from commonly accepted catalyst design principles for this reaction, reliant on manganese oxide, we herein report an efficient system comprised of isolated chromium atoms (1 wt %) stabilized in the ceria lattice by coprecipitation. The latter, in contrast to a simple impregnation approach, ensures firm metal anchoring and results in stable and selective N2O production over 100 h on stream up to 79% N2O selectivity at full NH3 conversion. Raman, electron paramagnetic resonance, and in situ UV-vis spectroscopies reveal that chromium incorporation enhances the density of oxygen vacancies and the rate of their generation and healing. Accordingly, temporal analysis of products, kinetic studies, and atomistic simulations show lattice oxygen of ceria to directly participate in the reaction, establishing the cocatalytic role of the carrier. Coupled with the dynamic restructuring of chromium sites to stabilize intermediates of N2O formation, these factors enable catalytic performance on par with or exceeding benchmark systems. These findings demonstrate how nanoscale engineering can elevate a previously overlooked metal into a highly competitive catalyst for selective ammonia oxidation to N2O, paving the way toward industrial implementation.
Collapse
Affiliation(s)
- Qingxin Yang
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland
| | - Ivan Surin
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland
| | - Julian Geiger
- Institute
of Chemical Research of Catalonia (ICIQ-CERCA), Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Henrik Eliasson
- Electron
Microscopy Center, Empa - Swiss Federal
Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Mikhail Agrachev
- Laboratory
of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Vita A. Kondratenko
- Advanced
Methods for Applied Catalysis, Leibniz-Institut
für Katalyse e. V., Albert Einstein-Str. 29a, 18059 Rostock, Germany
| | - Anna Zanina
- Advanced
Methods for Applied Catalysis, Leibniz-Institut
für Katalyse e. V., Albert Einstein-Str. 29a, 18059 Rostock, Germany
| | - Frank Krumeich
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland
| | - Gunnar Jeschke
- Laboratory
of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Rolf Erni
- Electron
Microscopy Center, Empa - Swiss Federal
Laboratories for Materials Science and Technology, Überlandstrasse 129, 8600 Dübendorf, Switzerland
| | - Evgenii V. Kondratenko
- Advanced
Methods for Applied Catalysis, Leibniz-Institut
für Katalyse e. V., Albert Einstein-Str. 29a, 18059 Rostock, Germany
| | - Núria López
- Institute
of Chemical Research of Catalonia (ICIQ-CERCA), Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Javier Pérez-Ramírez
- Institute
for Chemical and Bioengineering, Department of Chemistry and Applied
Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland
| |
Collapse
|
2
|
Ben Yaacov A, Falling LJ, Ben David R, Attia S, Andrés MA, Nemšák S, Eren B. Oxidation and Reduction of Polycrystalline Cerium Oxide Thin Films in Hydrogen. J Phys Chem Lett 2023; 14:7354-7360. [PMID: 37561999 PMCID: PMC10461297 DOI: 10.1021/acs.jpclett.3c01662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 08/04/2023] [Indexed: 08/12/2023]
Abstract
This study investigates the oxidation state of ceria thin films' surface and subsurface under 100 mTorr hydrogen using ambient pressure X-ray photoelectron spectroscopy. We examine the influence of the initial oxidation state and sample temperature (25-450 °C) on the interaction with hydrogen. Our findings reveal that the oxidation state during hydrogen interaction involves a complex interplay between oxidizing hydride formation, reducing thermal reduction, and reducing formation of hydroxyls followed by water desorption. In all studied conditions, the subsurface exhibits a higher degree of oxidation compared to the surface, with a more subtle difference for the reduced sample. The reduced samples are significantly hydroxylated and covered with molecular water at 25 °C. We also investigate the impact of water vapor impurities in hydrogen. We find that although 1 × 10-6 Torr water vapor oxidizes ceria, it is probably not the primary driver behind the oxidation of reduced ceria in the presence of hydrogen.
Collapse
Affiliation(s)
- Adva Ben Yaacov
- Department
of Chemical and Biological Physics, Weizmann
Institute of Science, 234 Herzl Street, 76100 Rehovot, Israel
| | - Lorenz J. Falling
- Advanced
Light Source, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
- Materials
Science Division, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
| | - Roey Ben David
- Department
of Chemical and Biological Physics, Weizmann
Institute of Science, 234 Herzl Street, 76100 Rehovot, Israel
| | - Smadar Attia
- Nuclear
Research Centre—Negev, Beer-Sheva 84190, Israel
| | - Miguel A. Andrés
- Department
of Chemical and Biological Physics, Weizmann
Institute of Science, 234 Herzl Street, 76100 Rehovot, Israel
| | - Slavomír Nemšák
- Advanced
Light Source, Lawrence Berkeley National
Laboratory, Berkeley, California 94720, United States
- Department
of Physics and Astronomy, University of
California, Davis, California 95616, United States
| | - Baran Eren
- Department
of Chemical and Biological Physics, Weizmann
Institute of Science, 234 Herzl Street, 76100 Rehovot, Israel
| |
Collapse
|
3
|
Zhang X, Zhu L, Hou Q, Guan J, Lu Y, Keal TW, Buckeridge J, Catlow CRA, Sokol AA. Toward a Consistent Prediction of Defect Chemistry in CeO 2. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:207-227. [PMID: 36644213 PMCID: PMC9835833 DOI: 10.1021/acs.chemmater.2c03019] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/25/2022] [Indexed: 05/10/2023]
Abstract
Polarizable shell-model potentials are widely used for atomic-scale modeling of charged defects in solids using the Mott-Littleton approach and hybrid Quantum Mechanical/Molecular Mechanical (QM/MM) embedded-cluster techniques. However, at the pure MM level of theory, the calculated defect energetics may not satisfy the requirement of quantitative predictions and are limited to only certain charged states. Here, we proposed a novel interatomic potential development scheme that unifies the predictions of all relevant charged defects in CeO2 based on the Mott-Littleton approach and QM/MM electronic-structure calculations. The predicted formation energies of oxygen vacancies accompanied by different excess electron localization patterns at the MM level of theory reach the accuracy of density functional theory (DFT) calculations using hybrid functionals. The new potential also accurately reproduces a wide range of physical properties of CeO2, showing excellent agreement with experimental and other computational studies. These findings provide opportunities for accurate large-scale modeling of the partial reduction and nonstoichiometry in CeO2, as well as a prototype for developing robust interatomic potentials for other defective crystals.
Collapse
Affiliation(s)
- Xingfan Zhang
- Kathleen
Lonsdale Materials Chemistry, Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
| | - Lei Zhu
- Kathleen
Lonsdale Materials Chemistry, Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
| | - Qing Hou
- Kathleen
Lonsdale Materials Chemistry, Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
- Institute
of Photonic Chips, University of Shanghai
for Science and Technology, Shanghai200093, China
| | - Jingcheng Guan
- Kathleen
Lonsdale Materials Chemistry, Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
| | - You Lu
- Scientific
Computing Department, STFC Daresbury Laboratory, Warrington, CheshireWA4 4AD, United Kingdom
| | - Thomas W. Keal
- Scientific
Computing Department, STFC Daresbury Laboratory, Warrington, CheshireWA4 4AD, United Kingdom
| | - John Buckeridge
- School
of Engineering, London South Bank University, LondonSE1 OAA, United Kingdom
| | - C. Richard A. Catlow
- Kathleen
Lonsdale Materials Chemistry, Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
- School
of Chemistry, Cardiff University, Park Place, CardiffCF10 1AT, United
Kingdom
| | - Alexey A. Sokol
- Kathleen
Lonsdale Materials Chemistry, Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
| |
Collapse
|
4
|
Kulal N, Bhat SS, Hugar V, Mallannavar CN, Lee SC, Bhattacharjee S, Vetrivel R, Shanbhag GV. Integrated DFT and experimental study on Co3O4/CeO2 catalyst for direct synthesis of dimethyl carbonate from CO2. J CO2 UTIL 2023. [DOI: 10.1016/j.jcou.2022.102323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
5
|
Luches P, Ganduglia-Pirovano MV. Preface to the JPCM special issue on physical and chemical properties of reducible oxides. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:420301. [PMID: 35975932 DOI: 10.1088/1361-648x/ac877f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Affiliation(s)
- Paola Luches
- Istituto Nanoscienze, Consiglio Nazionale delle Ricerche, Via G. Campi 213/a, 41125 Modena, Italy
| | | |
Collapse
|
6
|
Vecchietti J, Pérez-Bailac P, Lustemberg PG, Fornero EL, Pascual L, Bosco MV, Martínez-Arias A, Ganduglia-Pirovano MV, Bonivardi AL. Shape-Controlled Pathways in the Hydrogen Production from Ethanol Steam Reforming over Ceria Nanoparticles. ACS Catal 2022; 12:10482-10498. [PMID: 36033370 PMCID: PMC9396663 DOI: 10.1021/acscatal.2c02117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/26/2022] [Indexed: 11/29/2022]
Abstract
![]()
The ethanol surface reaction over CeO2 nanooctahedra
(NO) and nanocubes (NC), which mainly expose (111) and (100) surfaces,
respectively, was studied by means of infrared spectroscopy (TPSR-IR),
mass spectrometry (TPSR-MS), and density functional theory (DFT) calculations.
TPSR-MS results show that the production of H2 is 2.4 times
higher on CeO2-NC than on CeO2-NO, which is
rationalized starting from the different types of adsorbed ethoxy
species controlled by the shape of the ceria particles. Over the CeO2(111) surface, monodentate type I and II ethoxy species with
the alkyl chain perpendicular or parallel to the surface, respectively,
were identified. Meanwhile, on the CeO2(100) surface, bidentate
and monodentate type III ethoxy species on the checkerboard O-terminated
surface and on a pyramid of the reconstructed (100) surface, respectively,
are found. The more labile surface ethoxy species on each ceria nanoshape,
which are the monodentate type I or III ethoxy on CeO2-NO
and CeO2-NC, respectively, react on the surface to give
acetate species that decompose to CO2 and CH4, while H2 is formed via the recombination of hydroxyl
species. In addition, the more stable monodentate type II and bidentate
ethoxy species on CeO2-NO and CeO2-NC, respectively,
give an ethylenedioxy intermediate, the binding of which is facet-dependent.
On the (111) facet, the less strongly bound ethylenedioxy desorbs
as ethylene, whereas on the (100) facet, the more strongly bound intermediate
also produces CO2 and H2 via formate species.
Thus, on the (100) facet, an additional pathway toward H2 formation is found. ESR activity measurements show an enhanced H2 production on the nanocubes.
Collapse
Affiliation(s)
- Julia Vecchietti
- Instituto de Desarrollo Tecnológico para la Industria Química, UNL-CONICET, Güemes 3450, 3000 Santa Fe, Argentina
| | - Patricia Pérez-Bailac
- Instituto de Catálisis y Petroleoquímica, CSIC, C/Marie Curie 2, 28049 Madrid, Spain
- PhD Programme in Applied Chemistry, Doctoral School, Universidad Autónoma de Madrid, C/Francisco Tomas y Valiente 2, 28049 Madrid, Spain
| | - Pablo G. Lustemberg
- Instituto de Catálisis y Petroleoquímica, CSIC, C/Marie Curie 2, 28049 Madrid, Spain
- Instituto de Física Rosario (IFIR), CONICET-UNR, Bv. 27 de Febrero 210bis, 2000EZP Rosario, Santa Fe, Argentina
| | - Esteban L. Fornero
- Instituto de Desarrollo Tecnológico para la Industria Química, UNL-CONICET, Güemes 3450, 3000 Santa Fe, Argentina
| | - Laura Pascual
- Instituto de Catálisis y Petroleoquímica, CSIC, C/Marie Curie 2, 28049 Madrid, Spain
| | - Marta V. Bosco
- Instituto de Desarrollo Tecnológico para la Industria Química, UNL-CONICET, Güemes 3450, 3000 Santa Fe, Argentina
| | - Arturo Martínez-Arias
- Instituto de Catálisis y Petroleoquímica, CSIC, C/Marie Curie 2, 28049 Madrid, Spain
| | | | - Adrian L. Bonivardi
- Instituto de Desarrollo Tecnológico para la Industria Química, UNL-CONICET, Güemes 3450, 3000 Santa Fe, Argentina
- Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santiago del Estero 2829, 3000 Santa Fe, Argentina
| |
Collapse
|
7
|
Lorber K, Zavašnik J, Arčon I, Huš M, Teržan J, Likozar B, Djinović P. CO 2 Activation over Nanoshaped CeO 2 Decorated with Nickel for Low-Temperature Methane Dry Reforming. ACS APPLIED MATERIALS & INTERFACES 2022; 14:31862-31878. [PMID: 35801412 PMCID: PMC9305712 DOI: 10.1021/acsami.2c05221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Dry reforming of methane (DRM) is a promising way to convert methane and carbon dioxide into H2 and CO (syngas). CeO2 nanorods, nanocubes, and nanospheres were decorated with 1-4 wt % Ni. The materials were structurally characterized using TEM and in situ XANES/EXAFS. The CO2 activation was analyzed by DFT and temperature-programmed techniques combined with MS-DRIFTS. Synthesized CeO2 morphologies expose {111} and {100} terminating facets, varying the strength of the CO2 interaction and redox properties, which influence the CO2 activation. Temperature-programmed CO2 DRIFTS analysis revealed that under hydrogen-lean conditions mono- and bidentate carbonates are hydrogenated to formate intermediates, which decompose to H2O and CO. In excess hydrogen, methane is the preferred reaction product. The CeO2 cubes favor the formation of a polydentate carbonate species, which is an inert spectator during DRM at 500 °C. Polydentate covers a considerable fraction of ceria's surface, resulting in less-abundant surface sites for CO2 dissociation.
Collapse
Affiliation(s)
- Kristijan Lorber
- National
Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
- University
of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia
| | - Janez Zavašnik
- Jožef
Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Iztok Arčon
- University
of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia
- Jožef
Stefan Institute, Jamova cesta 39, SI-1000 Ljubljana, Slovenia
| | - Matej Huš
- National
Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
- Association
for Technical Culture (ZOTKS), Zaloška 65, 1000 Ljubljana, Slovenia
| | - Janvit Teržan
- National
Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Blaž Likozar
- National
Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
| | - Petar Djinović
- National
Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
- University
of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia
| |
Collapse
|