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Denisenko YG, Molokeev MS, Jiang X, Sedykh AE, Aleksandrovsky AS, Oreshonkov AS, Roginskii EM, Zhernakov MA, Heuler D, Seuffert M, Lin Z, Andreev OV, Müller-Buschbaum K. Negative Thermal Expansion in the Polymorphic Modification of Double Sulfate β-AEu(SO 4) 2 (A-Rb +, Cs +). Inorg Chem 2023. [PMID: 37490422 DOI: 10.1021/acs.inorgchem.3c01624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
New polymorphic modifications of double sulfates β-AEu(SO4)2 (A-Rb+, Cs+) were obtained by the hydrothermal method, the structure of which differs significantly from the monoclinic modifications obtained earlier by solid-state methods. According to single-crystal diffraction data, it was found that the compounds crystallize in the orthorhombic system, space group Pnna, with parameters β-RbEu(SO4)2: a = 9.4667(4) Å, b = 13.0786(5) Å, c = 5.3760(2) Å, V = 665.61(5) Å3; β-CsEu(SO4)2: a = 9.5278(5) Å, b = 13.8385(7) Å, c = 5.3783(3) Å, V = 709.13(7) Å3. The asymmetric part of the unit cell contains one-half Rb+/Cs+ ion, one-half Eu3+ ion, both in special sites, and one SO42- ion. Both compounds exhibit nonlinear negative thermal expansion. According to the X-ray structural analysis and theoretical calculations, the polarizing effect of the alkali metal ion has a decisive influence on the demonstration of this phenomenon. Experimental indirect band gaps of β-Rb and β-Cs are 4.05 and 4.11 eV, respectively, while the direct band gaps are 4.48 and 4.54 eV, respectively. The best agreement with theoretical calculations is obtained using the ABINIT package employing PAW pseudopotentials with hybrid PBE0 functional, while norm-conserving pseudopotentials used in the frame of CASTEP code and LCAO approach in the Crystal package gave worse agreement. The properties of alkali ions also significantly affect the luminescent properties of the compounds, which leads to a strong temperature dependence of the intensity of the 5D0 → 7F4 transition in β-CsEu(SO4)2 in contrast to much weaker dependence of this kind in β-RbEu(SO4)2.
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Affiliation(s)
- Yuriy G Denisenko
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
- Regional Center ″New Generation″, Physics and Mathematics School of the Tyumen Region, Tyumen 625051, Russia
- Department of Science and Innovation, Tyumen State University, Tyumen 625003, Russia
| | - Maxim S Molokeev
- Laboratory of Crystal Physics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
- Department of Engineering Physics and Radioelectronic, Siberian Federal University, Krasnoyarsk 660041, Russia
- Department of Physics, Far Eastern State Transport University, Khabarovsk 680021, Russia
| | - Xingxing Jiang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Alexander E Sedykh
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
| | - Aleksandr S Aleksandrovsky
- Laboratory of Coherent Optics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
- Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk 660041, Russia
| | - Aleksandr S Oreshonkov
- Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
- School of Engineering and Construction, Siberian Federal University, Krasnoyarsk 660041, Russia
| | - Evgenii M Roginskii
- Solid State Spectroscopy Department, Ioffe Institute, St. Petersburg 194021, Russia
| | - Maksim A Zhernakov
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
- Chemistry Institute, Kazan Federal University, Kazan 420008, Russia
| | - Dominik Heuler
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
| | - Marcel Seuffert
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
| | - Zheshuai Lin
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Oleg V Andreev
- Department of Inorganic and Physical Chemistry, Tyumen State University, Tyumen 625003, Russia
- Laboratory of the Chemistry of Rare Earth Compounds, Institute of Solid State Chemistry, UB RAS, Yekaterinburg 620137, Russia
| | - Klaus Müller-Buschbaum
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Gießen, Heinrich-Buff-Ring 17, Gießen 35392, Germany
- Center for Materials Research (LaMa), Justus-Liebig-University of Giessen, Gießen 35392, Germany
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2
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Le Gal A, Julbe A, Abanades S. Thermochemical Activity of Single- and Dual-Phase Oxide Compounds Based on Ceria, Ferrites, and Perovskites for Two-Step Synthetic Fuel Production. Molecules 2023; 28:molecules28114327. [PMID: 37298803 DOI: 10.3390/molecules28114327] [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: 04/20/2023] [Revised: 05/12/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
This study focuses on the generation of solar thermochemical fuel (hydrogen, syngas) from CO2 and H2O molecules via two-step thermochemical cycles involving intermediate oxygen-carrier redox materials. Different classes of redox-active compounds based on ferrite, fluorite, and perovskite oxide structures are investigated, including their synthesis and characterization associated with experimental performance assessment in two-step redox cycles. Their redox activity is investigated by focusing on their ability to perform the splitting of CO2 during thermochemical cycles while quantifying fuel yields, production rates, and performance stability. The shaping of materials as reticulated foam structures is then evaluated to highlight the effect of morphology on reactivity. A series of single-phase materials including spinel ferrite, fluorite, and perovskite formulations are first investigated and compared to state-of-the-art materials. NiFe2O4 foam exhibits a CO2-splitting activity similar to its powder analog after reduction at 1400 °C, surpassing the performance of ceria but with much slower oxidation kinetics. On the other hand, although identified as high-performing materials in other studies, Ce0.9Fe0.1O2, Ca0.5Ce0.5MnO3, Ce0.2Sr1.8MnO4, and Sm0.6Ca0.4Mn0.8Al0.2O3 are not found to be attractive candidates in this work (compared with La0.5Sr0.5Mn0.9Mg0.1O3). In the second part, characterizations and performance evaluation of dual-phase materials (ceria/ferrite and ceria/perovskite composites) are performed and compared to single-phase materials to assess a potential synergistic effect on fuel production. The ceria/ferrite composite does not provide any enhanced redox activity. In contrast, ceria/perovskite dual-phase compounds in the form of powders and foams are found to enhance the CO2-splitting performance compared to ceria.
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Affiliation(s)
- Alex Le Gal
- Processes, Materials and Solar Energy Laboratory (PROMES-CNRS), 7 Rue du Four Solaire, 66120 Odeillo Font-Romeu, France
| | - Anne Julbe
- Institut Européen des Membranes (IEM), CNRS, ENSCM, University of Montpellier, Place Eugène Bataillon, 34095 Montpellier, France
| | - Stéphane Abanades
- Processes, Materials and Solar Energy Laboratory (PROMES-CNRS), 7 Rue du Four Solaire, 66120 Odeillo Font-Romeu, France
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3
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Yoshida H, Koide T, Uemura T, Kuzuhara Y, Ohyama J, Machida M. Ce-modified Rh Overlayer for a Three-Way Catalytic Converter with Oxygen Storage/Release Capability. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.04.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Wang Y, Zhong S, Wen X, Zhang Q. Synthesis of Y2O2SO4 submicron spheres and photoluminescence behaviour with Tb3+ doping. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2021.109099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Controlled synthesis and photoluminescence behaviors of Lu2O2SO4:Eu3+ and Lu2O2S:Eu3+ phosphors. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Gryboś J, Fedyna M, Legutko P, Leszczyński B, Janas J, Wach A, Szlachetko J, Yu X, Kotarba A, Zhao Z, Sojka Z. Mechanistic Insights into Oxygen Dynamics in Soot Combustion over Cryptomelane Catalysts in Tight and Loose Contact Modes via 18O 2/ 16O 2 Isotopic Variable Composition Measurements – A Hot Ring Model of the Catalyst Operation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Joanna Gryboś
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Monika Fedyna
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Piotr Legutko
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Bartosz Leszczyński
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Łojasiewicza 11, Krakow 30-348, Poland
| | - Janusz Janas
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Anna Wach
- Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego, 152, Krakow 31-342, Poland
| | - Jakub Szlachetko
- Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego, 152, Krakow 31-342, Poland
| | - Xuehua Yu
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, Liaoning, China
| | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
| | - Zhen Zhao
- Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, Liaoning, China
| | - Zbigniew Sojka
- Faculty of Chemistry, Jagiellonian University, ul. Gronostajowa 2, Krakow 30-387, Poland
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7
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Sakamaki A, Ogihara H, Yoshida-Hirahara M, Kurokawa H. Precursor accumulation on nanocarbons for the synthesis of LaCoO 3 nanoparticles as electrocatalysts for oxygen evolution reaction. RSC Adv 2021; 11:20313-20321. [PMID: 35479911 PMCID: PMC9034031 DOI: 10.1039/d1ra03762e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 06/02/2021] [Indexed: 01/03/2023] Open
Abstract
Oxygen evolution reaction (OER) is a key step in energy storage devices. Lanthanum cobaltite (LaCoO3) perovskite is an active catalyst for OER in alkaline solutions, and it is expected to be a low-cost alternative to the state-of-the-art catalysts (IrO2 and RuO2) because transition metals are abundant and inexpensive. For efficient catalysis with LaCoO3, nanosized LaCoO3 with a high surface area is desirable for increasing the number of catalytically active sites. In this study, we developed a novel synthetic route for LaCoO3 nanoparticles by accumulating the precursor molecules over nanocarbons. This precursor accumulation (PA) method for LaCoO3 nanoparticle synthesis is simple and involves the following steps: (1) a commercially available carbon powder is soaked in a solution of the nitrate salts of lanthanum and cobalt and (2) the sample is dried and calcined in air. The LaCoO3 nanoparticles prepared by the PA method have a high specific surface area (12 m2 g−1), comparable to that of conventional LaCoO3 nanoparticles. The morphology of the LaCoO3 nanoparticles is affected by the nanocarbon type, and LaCoO3 nanoparticles with diameters of less than 100 nm were obtained when carbon black (Ketjen black) was used as the support. Further, the sulfur impurities in nanocarbons significantly influence the formation of the perovskite structure. The prepared LaCoO3 nanoparticles show excellent OER activity owing to their high surface area and perovskite structure. The Tafel slope of these LaCoO3 nanoparticles is as low as that of the previously reported active LaCoO3 catalyst. The results strongly suggest that the PA method provides nanosized LaCoO3 without requiring the precise control of chemical reactions, harsh conditions, and/or special apparatus, indicating that it is promising for producing active OER catalysts at a large scale. A simple synthetic process for LaCoO3 nanoparticles based on the accumulation of precursors on nanocarbon supports was presented. The LaCoO3 nanoparticles showed excellent OER activity owing to their high surface area and perovskite structure.![]()
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Affiliation(s)
- Aoi Sakamaki
- Graduate School of Science and Engineering, Saitama University 255 Shimo-Okubo, Sakura-ku Saitama 338-8570 Japan
| | - Hitoshi Ogihara
- Graduate School of Science and Engineering, Saitama University 255 Shimo-Okubo, Sakura-ku Saitama 338-8570 Japan
| | - Miru Yoshida-Hirahara
- Graduate School of Science and Engineering, Saitama University 255 Shimo-Okubo, Sakura-ku Saitama 338-8570 Japan
| | - Hideki Kurokawa
- Graduate School of Science and Engineering, Saitama University 255 Shimo-Okubo, Sakura-ku Saitama 338-8570 Japan
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8
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Denisenko YG, Sedykh AE, Molokeev MS, Oreshonkov AS, Aleksandrovsky AS, Krylov AS, Khritokhin NA, Sal’nikova EI, Andreev OV, Müller-Buschbaum K. Crystal and electronic structure, thermochemical and photophysical properties of europium-silver sulfate monohydrate AgEu(SO4)2·H2O. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121898] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Bork AH, Carrillo AJ, Hood ZD, Yildiz B, Rupp JLM. Oxygen Exchange in Dual-Phase La 0.65Sr 0.35MnO 3-CeO 2 Composites for Solar Thermochemical Fuel Production. ACS APPLIED MATERIALS & INTERFACES 2020; 12:32622-32632. [PMID: 32551512 DOI: 10.1021/acsami.0c04276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Increasing the capacity and kinetics of oxygen exchange in solid oxides is important to improve the performance of numerous energy-related materials, especially those for the solar-to-fuel technology. Dual-phase metal oxide composites of La0.65Sr0.35MnO3-x%CeO2, with x = 0, 5, 10, 20, 50, and 100, have been experimentally investigated for oxygen exchange and CO2 splitting via thermochemical redox reactions. The prepared metal oxide powders were tested in a temperature range from 1000 to 1400 °C under isothermal and two-step cycling conditions relevant for solar thermochemical fuel production. We reveal synergetic oxygen exchange of the dual-phase composite La0.65Sr0.35MnO3-CeO2 compared to its individual components. The enhanced oxygen exchange in the composite has a beneficial effect on the rate of oxygen release and the total CO produced by CO2 splitting, while it has an adverse effect on the maximum rate of CO evolution. Ex situ Raman and XRD analyses are used to shed light on the relative oxygen content during thermochemical cycling. Based on the relative oxygen content in both phases, we discuss possible mechanisms that can explain the observed behavior. Overall, the presented findings highlight the beneficial effects of dual-phase composites in enhancing the oxygen exchange capacity of redox materials for renewable fuel production.
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Affiliation(s)
- Alexander H Bork
- Electrochemical Materials Laboratory, Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Laboratory for Electrochemical Interfaces, Department of Materials Science & Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Alfonso J Carrillo
- Electrochemical Materials Laboratory, Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Zachary D Hood
- Electrochemical Materials Laboratory, Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Bilge Yildiz
- Laboratory for Electrochemical Interfaces, Department of Materials Science & Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Laboratory for Electrochemical Interfaces, Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jennifer L M Rupp
- Electrochemical Materials Laboratory, Department of Materials Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Electrochemical Materials Laboratory, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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10
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Denisenko YG, Sal’nikova EI, Basova SA, Molokeev MS, Krylov AS, Aleksandrovsky AS, Oreshonkov AS, Atuchin VV, Volkova SS, Khritokhin NA, Andreev OV. Synthesis of Samarium OxysulfateSm 2O 2SO 4 in the High-Temperature Oxidation Reaction and Its Structural, Thermal and Luminescent Properties. Molecules 2020; 25:molecules25061330. [PMID: 32183320 PMCID: PMC7144115 DOI: 10.3390/molecules25061330] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/10/2020] [Accepted: 03/10/2020] [Indexed: 12/03/2022] Open
Abstract
The oxidation process of samariumoxysulfide was studied in the temperature range of 500–1000 °C. Our DTA investigation allowed for establishing the main thermodynamic (∆Hºexp = −654.6 kJ/mol) and kinetic characteristics of the process (Ea = 244 kJ/mol, A = 2 × 1010). The enthalpy value of samarium oxysulfate (ΔHºf (Sm2O2SO4(monocl)) = −2294.0 kJ/mol) formation was calculated. The calculated process enthalpy value coincides with the value determined in the experiment. It was established that samarium oxysulfate crystallizes in the monoclinic symmetry class and its crystal structure belongs to space group C2/c with unit cell parameters a = 13.7442 (2), b = 4.20178 (4) and c = 8.16711 (8)Å, β = 107.224 (1)°, V = 450.498 (9)Å3, Z = 4. The main elements of the crystalline structure are obtained and the cation coordination environment is analyzed in detail. Vibrational spectroscopy methods confirmed the structural model adequacy. The Sm2O2SO4luminescence spectra exhibit three main bands easily assignable to the transitions from 4G5/2 state to 6H5/2, 6H7/2, and 6H9/2 multiplets.
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Affiliation(s)
- Yu. G. Denisenko
- Department of General and Special Chemistry, Industrial University of Tyumen, 625000 Tyumen, Russia;
| | - E. I. Sal’nikova
- Institute of Chemistry, Tyumen State University, 625003 Tyumen, Russia; (E.I.S.); (S.A.B.); (N.A.K.); (O.V.A.)
- Department of General Chemistry, Northen Trans-Ural Agricultural University, 625003 Tyumen, Russia
| | - S. A. Basova
- Institute of Chemistry, Tyumen State University, 625003 Tyumen, Russia; (E.I.S.); (S.A.B.); (N.A.K.); (O.V.A.)
| | - M. S. Molokeev
- Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia;
- School of Engineering Physics and Radioelectronics, Siberian Federal University, 660041 Krasnoyarsk, Russia
- Department of Physics, Far Eastern State Transport University, Khabarovsk 680021, Russia
| | - A. S. Krylov
- Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia; (A.S.K.); (A.S.O.)
| | - A. S. Aleksandrovsky
- Laboratory of Coherent Optics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia;
- Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, 660041 Krasnoyarsk, Russia
| | - A. S. Oreshonkov
- Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia; (A.S.K.); (A.S.O.)
- School of Engineering and Construction, Siberian Federal University, 660041 Krasnoyarsk, Russia
| | - V. V. Atuchin
- Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, 630090 Novosibirsk, Russia
- Laboratory of Semiconductor and Dielectric Materials, Novosibirsk State University, 630090 Novosibirsk, Russia
- Research and Development Department, Kemerovo State University, 650000 Kemerovo, Russia
- Correspondence:
| | - S. S. Volkova
- Research Resource Center “Natural Resource Management and Physico-Chemical Research”, Tyumen State University, 625003 Tyumen, Russia;
| | - N. A. Khritokhin
- Institute of Chemistry, Tyumen State University, 625003 Tyumen, Russia; (E.I.S.); (S.A.B.); (N.A.K.); (O.V.A.)
| | - O. V. Andreev
- Institute of Chemistry, Tyumen State University, 625003 Tyumen, Russia; (E.I.S.); (S.A.B.); (N.A.K.); (O.V.A.)
- Laboratory of the chemistry of rare earth compounds, Institute of Solid State Chemistry, UB RAS, 620137 Ekaterinburg, Russia
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Denisenko YG, Molokeev MS, Krylov AS, Aleksandrovsky AS, Oreshonkov AS, Atuchin VV, Azarapin NO, Plyusnin PE, Sal’nikova EI, Andreev OV. High-temperature oxidation of europium (II) sulfide. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.05.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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12
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Denisenko YG, Azarapin NO, Khritokhin NA, Andreev OV, Volkova SS. Europium Oxysulfate Eu2O2SO4 Crystal Structure. RUSS J INORG CHEM+ 2019. [DOI: 10.1134/s0036023619010042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Performance and Stability of Metal (Co, Mn, Cu)-Promoted La2O2SO4 Oxygen Carrier for Chemical Looping Combustion of Methane. Catalysts 2019. [DOI: 10.3390/catal9020147] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Oxygen carrier materials based on La2O2SO4 and promoted by small amounts (1% wt.) of transition metals, namely Co, Mn and Cu, have been synthesized and characterized by means of X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), Temperature-programmed reduction/oxidation (TPR/TPO) and thermogravimetry-mass-Fourier transform infrared spectrometry (TG-MS-FTIR) experiments under alternating feeds in order to investigate their potential use for the Chemical Looping Combustion process using either hydrogen or methane as the fuel. The chemical looping reactivity is based on the reversible redox cycle of sulfur from S6+ in La2O2SO4 to S2− in La2O2S and entails a large oxygen storage capacity, but it generally requires high temperatures to proceed, challenging material stability and durability. Herein we demonstrate a remarkable improvement of lattice oxygen availability and activity during the reduction step obtained by cost-effective metal doping in the order Co > Mn > Cu. Notably, the addition of Co or Mn has shown a significant beneficial effect to prevent the decomposition of the oxysulfate releasing SO2, which is identified as the main cause of progressive deactivation for the unpromoted La2O2SO4.
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Lee SW, Jeong JR, Ra CS, Sohn Y. Hydrothermal Synthesis and Characterization of Sm 2
O 2
SO 4
Nanoplates. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sung Woo Lee
- Center for Research Facilities & Department of Materials Science and Engineering; Chungnam National University; Daejeon 34134 Republic of Korea
| | - Jong-Ryul Jeong
- Department of Materials Science and Engineering and Graduate School of Energy Science and Technology; Chungnam National University; Daejeon 34134 Republic of Korea
| | - Choon Sup Ra
- Department of Chemistry; Yeungnam University; Gyeongsan 38541 Republic of Korea
| | - Youngku Sohn
- Department of Chemistry; Yeungnam University; Gyeongsan 38541 Republic of Korea
- Department of Chemistry; Chungnam National University; Daejeon 34134 Republic of Korea
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Machida M, Ueno M, Omura T, Kurusu S, Hinokuma S, Nanba T, Shinozaki O, Furutani H. CeO2-Grafted Mn–Fe Oxide Composites as Alternative Oxygen-Storage Materials for Three-Way Catalysts: Laboratory and Chassis Dynamometer Tests. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04468] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masato Machida
- Department
of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo, Kumamoto 860-8555, Japan
| | - Mana Ueno
- Department
of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo, Kumamoto 860-8555, Japan
| | - Takeshi Omura
- Department
of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo, Kumamoto 860-8555, Japan
| | - Sae Kurusu
- Department
of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo, Kumamoto 860-8555, Japan
| | - Satoshi Hinokuma
- Department
of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo, Kumamoto 860-8555, Japan
| | - Tetsuya Nanba
- Research
Center for New Fuels and Vehicle Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8564, Japan
| | - Osamu Shinozaki
- Research
Center for New Fuels and Vehicle Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8564, Japan
| | - Hirohide Furutani
- Research
Center for New Fuels and Vehicle Technology, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8564, Japan
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