351
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Lin Y, Wu Z, Wen J, Poeppelmeier KR, Marks LD. Imaging the atomic surface structures of CeO2 nanoparticles. NANO LETTERS 2014; 14:191-6. [PMID: 24295383 DOI: 10.1021/nl403713b] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Atomic surface structures of CeO2 nanoparticles are under debate owing to the lack of clear experimental determination of the oxygen atom positions. In this study, with oxygen atoms clearly observed using aberration-corrected high-resolution electron microscopy, we determined the atomic structures of the (100), (110), and (111) surfaces of CeO2 nanocubes. The predominantly exposed (100) surface has a mixture of Ce, O, and reduced CeO terminations, underscoring the complex structures of this polar surface that previously was often oversimplified. The (110) surface shows "sawtooth-like" (111) nanofacets and flat CeO2-x terminations with oxygen vacancies. The (111) surface has an O termination. These findings can be extended to the surfaces of differently shaped CeO2 nanoparticles and provide insight about face-selective catalysis.
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Affiliation(s)
- Yuyuan Lin
- Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois 60208, United States
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352
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Syu CY, Yang HW, Hsu FH, Wang JH. The chemical origin and catalytic activity of coinage metals: from oxidation to dehydrogenation. Phys Chem Chem Phys 2014; 16:7481-90. [DOI: 10.1039/c3cp55477e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electronegative adspecies on inactive coinage metals can dramatically enhance their catalytic activity for oxidation as well as dehydrogenation reactions.
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Affiliation(s)
- Cih-Ying Syu
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Republic of China
| | - Hao-Wen Yang
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Republic of China
| | - Fu-Hsing Hsu
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Republic of China
| | - Jeng-Han Wang
- Department of Chemistry
- National Taiwan Normal University
- Taipei, Republic of China
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353
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Liu B, Huang T, Zhang Z, Wang Z, Zhang Y, Li J. The effect of the alkali additive on the highly active Ru/C catalyst for water gas shift reaction. Catal Sci Technol 2014. [DOI: 10.1039/c3cy00721a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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354
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On the importance of metal–oxide interface sites for the water–gas shift reaction over Pt/CeO2 catalysts. J Catal 2014. [DOI: 10.1016/j.jcat.2013.10.012] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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355
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Kouva S, Andersin J, Honkala K, Lehtonen J, Lefferts L, Kanervo J. Water and carbon oxides on monoclinic zirconia: experimental and computational insights. Phys Chem Chem Phys 2014; 16:20650-64. [DOI: 10.1039/c4cp02742f] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Formates form via gas-phase or linearly adsorbed CO and decompose either reversibly to CO or reductively to CO2 and H2.
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Affiliation(s)
- Sonja Kouva
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- 00076 Aalto, Finland
| | - Jenni Andersin
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- 40014 Jyväskylä, Finland
| | - Karoliina Honkala
- Department of Chemistry
- Nanoscience Center
- University of Jyväskylä
- 40014 Jyväskylä, Finland
| | - Juha Lehtonen
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- 00076 Aalto, Finland
| | - Leon Lefferts
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- 00076 Aalto, Finland
- Faculty of Science & Technology
- University of Twente
| | - Jaana Kanervo
- Department of Biotechnology and Chemical Technology
- Aalto University School of Chemical Technology
- 00076 Aalto, Finland
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356
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357
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Rh–Fe/Ca–Al2O3: A Unique Catalyst for CO-Free Hydrogen Production in Low Temperature Ethanol Steam Reforming. Top Catal 2013. [DOI: 10.1007/s11244-013-0221-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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358
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Gabrovska M, Idakiev V, Tenchev K, Nikolova D, Edreva-Kardjieva R, Crisan D. Catalytic performance of Ni-Al layered double hydroxides in CO purification processes. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2013. [DOI: 10.1134/s0036024413130098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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359
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Seenivasan H, Tiwari AK. Water dissociation on Ni(100) and Ni(111): Effect of surface temperature on reactivity. J Chem Phys 2013; 139:174707. [DOI: 10.1063/1.4827641] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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360
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Lin J, Wang A, Qiao B, Liu X, Yang X, Wang X, Liang J, Li J, Liu J, Zhang T. Remarkable Performance of Ir1/FeOx Single-Atom Catalyst in Water Gas Shift Reaction. J Am Chem Soc 2013; 135:15314-7. [DOI: 10.1021/ja408574m] [Citation(s) in RCA: 689] [Impact Index Per Article: 62.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Jian Lin
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Aiqin Wang
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Botao Qiao
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiaoyan Liu
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiaofeng Yang
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xiaodong Wang
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Jinxia Liang
- Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jun Li
- Department
of Chemistry, Tsinghua University, Beijing 100084, China
| | - Jingyue Liu
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
- Department
of Physics, Arizona State University, Tempe, Arizona 85287, United States
| | - Tao Zhang
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical
Physics, Chinese Academy of Sciences, Dalian 116023, China
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361
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Hua Q, Cao T, Bao H, Jiang Z, Huang W. Crystal-plane-controlled surface chemistry and catalytic performance of surfactant-free Cu2 O nanocrystals. CHEMSUSCHEM 2013; 6:1966-1972. [PMID: 24106201 DOI: 10.1002/cssc.201300376] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 07/23/2013] [Indexed: 06/02/2023]
Abstract
Surfactant-free Cu2 O nanocrystals, including cubes exposing {100} crystal planes, octahedra exposing {111} crystal planes, and rhombic dodecahedra exposing {110} crystal planes, were used as model catalysts to study the effect of the crystal plane on the surface chemistry and catalytic performance for CO oxidation of Cu2 O nanocrystals. The catalytic performance follows the order of octahedra rhombic dodecahedra>cubes; this suggests that Cu2 O(111) is most active in catalyzing CO oxidation among Cu2 O (111), (110), and (100) surfaces. CO temperature-programmed reduction results demonstrate that Cu2 O octahedra are the most easily reduced of the Cu2 O cubes, octahedra, and rhombic dodecahedra. Diffuse reflectance FTIR spectra show that CO chemisorption on Cu2 O nanocrystals depends on their shape and the chemisorption temperature. CO chemisorption is strongest on rhombic dodecahedra at 30°C, but at 150°C on octahedra. Both the reducibility and chemisorption ability of various Cu2 O nanocrystals toward CO are consistent with their catalytic performance in CO oxidation. The observed surface chemistry and catalytic performance in CO oxidation of various Cu2 O nanocrystals can be well correlated with their exposed crystal plane and surface composition/structure. Cu2 O octahedra expose the {111} crystal plane with coordinated, unsaturated Cu(I) sites, and thus, are most active in chemisorbing CO and catalyzing CO oxidation. These results nicely demonstrate the crystal-plane-controlled surface chemistry and catalytic performance of oxide catalysts.
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Affiliation(s)
- Qing Hua
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Chemical Physics, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026 (P.R. China)
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362
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Gao Y, Wang W, Chang S, Huang W. Morphology Effect of CeO2Support in the Preparation, Metal-Support Interaction, and Catalytic Performance of Pt/CeO2Catalysts. ChemCatChem 2013. [DOI: 10.1002/cctc.201300709] [Citation(s) in RCA: 154] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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363
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Kim HY, Liu P. Tuning the Catalytic Selectivity of Copper Using TiO2: Water-Gas Shift versus CO Oxidation. ChemCatChem 2013. [DOI: 10.1002/cctc.201300449] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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364
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Gökaliler F, Önsan ZI, Aksoylu AE. Power-law type rate expression for WGS reaction over Au–Re/CeO2 catalyst under realistic fuel processor conditions. CATAL COMMUN 2013. [DOI: 10.1016/j.catcom.2013.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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365
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Hellström M, Jorner K, Bryngelsson M, Huber SE, Kullgren J, Frauenheim T, Broqvist P. An SCC-DFTB Repulsive Potential for Various ZnO Polymorphs and the ZnO-Water System. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2013; 117:17004-17015. [PMID: 23991228 PMCID: PMC3753033 DOI: 10.1021/jp404095x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/17/2013] [Indexed: 05/30/2023]
Abstract
We have developed an efficient scheme for the generation of accurate repulsive potentials for self-consistent charge density-functional-based tight-binding calculations, which involves energy-volume scans of bulk polymorphs with different coordination numbers. The scheme was used to generate an optimized parameter set for various ZnO polymorphs. The new potential was subsequently tested for ZnO bulk, surface, and nanowire systems as well as for water adsorption on the low-index wurtzite (101̅0) and (112̅0) surfaces. By comparison to results obtained at the density functional level of theory, we show that the newly generated repulsive potential is highly transferable and capable of capturing most of the relevant chemistry of ZnO and the ZnO/water interface.
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Affiliation(s)
- Matti Hellström
- Department of Chemistry, The
Ångström Laboratory, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden
| | - Kjell Jorner
- Department of Chemistry, The
Ångström Laboratory, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden
| | - Maria Bryngelsson
- Department of Chemistry, The
Ångström Laboratory, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden
| | - Stefan E. Huber
- Department of Chemistry, The
Ångström Laboratory, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden
- Institute of Ion Physics and
Applied Physics, University of Innsbruck, Technikerstrasse 25, AT-6020 Innsbruck, Austria
| | - Jolla Kullgren
- Department of Chemistry, The
Ångström Laboratory, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden
| | - Thomas Frauenheim
- Bremen Center for Computational
Materials Science, University of Bremen, Am Fallturm 1, DE-28359 Bremen, Germany
| | - Peter Broqvist
- Department of Chemistry, The
Ångström Laboratory, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden
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366
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Senanayake SD, Stacchiola D, Rodriguez JA. Unique properties of ceria nanoparticles supported on metals: novel inverse ceria/copper catalysts for CO oxidation and the water-gas shift reaction. Acc Chem Res 2013; 46:1702-11. [PMID: 23286528 DOI: 10.1021/ar300231p] [Citation(s) in RCA: 164] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Oxides play a central role in important industrial processes, including applications such as the production of renewable energy, remediation of environmental pollutants, and the synthesis of fine chemicals. They were originally used as catalyst supports and were thought to be chemically inert, but now they are used to build catalysts tailored toward improved selectivity and activity in chemical reactions. Many studies have compared the morphological, electronic, and chemical properties of oxide materials with those of unoxidized metals. Researchers know much less about the properties of oxides at the nanoscale, which display distinct behavior from their bulk counterparts. More is known about metal nanoparticles. Inverse-model catalysts, composed of oxide nanoparticles supported on metal or oxide substrates instead of the reverse (oxides supporting metal nanoparticles), are excellent tools for systematically testing the properties of novel catalytic oxide materials. Inverse models are prepared in situ and can be studied with a variety of surface science tools (e.g. scanning tunneling microscopy, X-ray photoemission spectroscopy, ultraviolet photoemission spectroscopy, low-energy electron microscopy) and theoretical tools (e.g. density functional theory). Meanwhile, their catalytic activity can be tested simultaneously in a reactor. This approach makes it possible to identify specific functions or structures that affect catalyst performance or reaction selectivity. Insights gained from these tests help to tailor powder systems, with the primary objective of rational design (experimental and theoretical) of catalysts for specific chemical reactions. This Account describes the properties of inverse catalysts composed of CeOx nanoparticles supported on Cu(111) or CuOx/Cu(111) as determined through the methods described above. Ceria is an important material for redox chemistry because of its interchangeable oxidation states (Ce⁴⁺ and Ce³⁺). Cu(111), meanwhile, is a standard catalyst for reactions such as CO oxidation and the water-gas shift (WGS). This metal serves as an ideal replacement for other noble metals that are neither abundant nor cost effective. To prepare the inverse system we deposited nanoparticles (2-20 nm) of cerium oxide onto the Cu(111) surface. During this process, the Cu(111) surface grows an oxide layer that is characteristic of Cu₂O (Cu¹⁺). This oxide can influence the growth of ceria nanoparticles. Evidence suggests triangular-shaped CeO₂(111) grows on Cu₂O(111) surfaces while rectangular CeO₂(100) grows on Cu₄O₃(111) surfaces. We used the CeOx/Cu₂O/Cu(111) inverse system to study two catalytic processes: the WGS (CO + H₂O → CO₂ + H₂) and CO oxidation (2CO + O₂ → 2CO₂). We discovered that the addition of small amounts of ceria nanoparticles can activate the Cu(111) surface and achieve remarkable enhancement of catalytic activity in the investigated reactions. In the case of the WGS, the CeOx nanoparticle facilitated this process by acting at the interface with Cu to dissociate water. In the CO oxidation case, an enhancement in the dissociation of O₂ by the nanoparticles was a key factor. The strong interaction between CeOx nanoparticles and Cu(111) when preoxidized and reduced in CO resulted in a massive surface reconstruction of the copper substrate with the introduction of microterraces that covered 25-35% of the surface. This constitutes a new mechanism for surface reconstruction not observed before. These microterraces helped to facilitate a further enhancement of activity towards the WGS by opening an additional channel for the dissociation of water. In summary, inverse catalysts of CeOx/Cu(111) and CeO₂/Cu₂O/Cu(111) demonstrate the versatility of a model system to obtain insightful knowledge of catalytic processes. These systems will continue to offer a unique opportunity to probe key catalytic components and elucidate the relationship between structure and reactivity of novel materials and reactions in the future.
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Affiliation(s)
- Sanjaya D. Senanayake
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11789, United States
| | - Dario Stacchiola
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11789, United States
| | - Jose A. Rodriguez
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11789, United States
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367
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Wang G, Schaidle JA, Katz MB, Li Y, Pan X, Thompson LT. Alumina supported Pt–Mo2C catalysts for the water–gas shift reaction. J Catal 2013. [DOI: 10.1016/j.jcat.2013.04.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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368
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Huang W. Crystal Plane-Dependent Surface Reactivity and Catalytic Property of Oxide Catalysts Studied with Oxide Nanocrystal Model Catalysts. Top Catal 2013. [DOI: 10.1007/s11244-013-0139-6] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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369
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Effect of Molybdenum on the Sulfur-Tolerance of Cerium–Cobalt Mixed Oxide Water–Gas Shift Catalysts. Top Catal 2013. [DOI: 10.1007/s11244-013-0125-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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370
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371
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WITHDRAWN: Study of Cu–Mn/SiO2 catalyst prepared from a novel precursor, [Cu(H2O)6][Mn(dipic)2]·2H2O/SiO2, for water gas shift reaction. J IND ENG CHEM 2013. [DOI: 10.1016/j.jiec.2013.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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372
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Nie S, Starodub E, Monti M, Siegel DA, Vergara L, El Gabaly F, Bartelt NC, de la Figuera J, McCarty KF. Insight into Magnetite’s Redox Catalysis from Observing Surface Morphology during Oxidation. J Am Chem Soc 2013; 135:10091-8. [DOI: 10.1021/ja402599t] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Shu Nie
- Sandia National Laboratories, Livermore, California 94550, United States
| | - Elena Starodub
- Sandia National Laboratories, Livermore, California 94550, United States
| | - Matteo Monti
- Instituto de Química-Física “Rocasolano”, CSIC, Madrid 28006, Spain
| | - David A. Siegel
- Sandia National Laboratories, Livermore, California 94550, United States
| | - Lucía Vergara
- Instituto de Química-Física “Rocasolano”, CSIC, Madrid 28006, Spain
| | - Farid El Gabaly
- Sandia National Laboratories, Livermore, California 94550, United States
| | - Norman C. Bartelt
- Sandia National Laboratories, Livermore, California 94550, United States
| | | | - Kevin F. McCarty
- Sandia National Laboratories, Livermore, California 94550, United States
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373
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Wang L, Tahvildar Khazaneh M, Widmann D, Behm R. TAP reactor studies of the oxidizing capability of CO2 on a Au/CeO2 catalyst – A first step toward identifying a redox mechanism in the Reverse Water–Gas Shift reaction. J Catal 2013. [DOI: 10.1016/j.jcat.2013.02.021] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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374
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Zhang S, Shan JJ, Zhu Y, Frenkel AI, Patlolla A, Huang W, Yoon SJ, Wang L, Yoshida H, Takeda S, Tao FF. WGS catalysis and in situ studies of CoO(1-x), PtCo(n)/Co3O4, and Pt(m)Co(m')/CoO(1-x) nanorod catalysts. J Am Chem Soc 2013; 135:8283-93. [PMID: 23611190 DOI: 10.1021/ja401967y] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Water-gas shift (WGS) reactions on Co3O4 nanorods and Co3O4 nanorods anchoring singly dispersed Pt atoms were explored through building correlation of catalytic performance to surface chemistry of catalysts during catalysis using X-ray absorption spectroscopy, ambient pressure X-ray photoelectron spectroscopy (AP-XPS), and environmental TEM. The active phase of pure Co3O4 during WGS is nonstoichiometric cobalt monoxide with about 20% oxygen vacancies, CoO0.80. The apparent activation energy (Ea) in the temperature range of 180-240 °C is 91.0 ± 10.5 kJ mol(-1). Co3O4 nanorods anchoring Pt atoms (Pt/Co3O4) are active for WGS with a low Ea of 50.1 ± 5.0 kJ mol(-1) in the temperature range of 150-200 °C. The active surface of this catalyst is singly dispersed Pt1Co(n) nanoclusters anchored on Co3O4 (Pt1/Co3O4), evidenced by in situ studies of extended X-ray absorption fine structure spectroscopy. In the temperature range of 200-300 °C, catalytic in situ studies suggested the formation of Pt(m)Co(m') nanoclusters along with the reduction of Co3O4 substrate to CoO(1-x). The new catalyst, Pt(m)Co(m')/CoO(1-x) is active for WGS with a very low Ea of 24.8 ± 3.1 kJ mol(-1) in the temperature range of 300-350 °C. The high activity could result from a synergy of Pt(m)Co(m') nanoclusters and surface oxygen vacancies of CoO(1-x).
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Affiliation(s)
- Shiran Zhang
- Department of Chemistry and Biochemistry, University of Notre Dame , Notre Dame, Indiana 46556, United States
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375
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Baranak M, Gürünlü B, Sarıoğlan A, Ataç Ö, Atakül H. Low acidity ZSM-5 supported iron catalysts for Fischer–Tropsch synthesis. Catal Today 2013. [DOI: 10.1016/j.cattod.2012.04.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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376
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High-Temperature Water Gas Shift Reaction Over Fe/Al/Cu Oxide Based Catalysts Using Simulated Waste-Derived Synthesis Gas. Catal Letters 2013. [DOI: 10.1007/s10562-013-0981-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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377
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Study on factors controlling catalytic activity for low-temperature water–gas-shift reaction on Cu-based catalysts. Catal Today 2013. [DOI: 10.1016/j.cattod.2012.03.064] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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378
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Cunha A, Wu YJ, Santos J, Rodrigues A. Sorption enhanced steam reforming of ethanol on hydrotalcite-like compounds impregnated with active copper. Chem Eng Res Des 2013. [DOI: 10.1016/j.cherd.2012.09.015] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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379
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Yamamuro K, Tamura S, Watanabe R, Sekine Y. Hydrogen Production by Water Gas Shift Reaction Over Pd–K Impregnated Co Oxide Catalyst. Catal Letters 2013. [DOI: 10.1007/s10562-013-0974-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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380
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Xu L, Wu Z, Jin Y, Ma Y, Huang W. Reaction mechanism of WGS and PROX reactions catalyzed by Pt/oxide catalysts revealed by an FeO(111)/Pt(111) inverse model catalyst. Phys Chem Chem Phys 2013; 15:12068-74. [DOI: 10.1039/c3cp50292a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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381
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Subramanian V, Gnanakumar ES, Jeong DW, Han WB, Gopinath CS, Roh HS. A rationally designed CuFe2O4–mesoporous Al2O3 composite towards stable performance of high temperature water–gas shift reaction. Chem Commun (Camb) 2013; 49:11257-9. [DOI: 10.1039/c3cc43699c] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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382
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Neveux L, Chiche D, Pérez-Pellitero J, Favergeon L, Gay AS, Pijolat M. New insight into the ZnO sulfidation reaction: mechanism and kinetics modeling of the ZnS outward growth. Phys Chem Chem Phys 2013; 15:1532-45. [DOI: 10.1039/c2cp42988h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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383
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Reina TR, Ivanova S, Idakiev V, Delgado JJ, Ivanov I, Tabakova T, Centeno MA, Odriozola JA. Impact of Ce–Fe synergism on the catalytic behaviour of Au/CeO2–FeOx/Al2O3for pure H2production. Catal Sci Technol 2013. [DOI: 10.1039/c2cy20537h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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384
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385
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Martis V, Oldman R, Anderson R, Fowles M, Hyde T, Smith R, Nikitenko S, Bras W, Sankar G. Structure and speciation of chromium ions in chromium doped Fe2O3catalysts. Phys Chem Chem Phys 2013; 15:168-75. [DOI: 10.1039/c2cp43307a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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386
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Zhang C, Zhu W, Li S, Wu G, Ma X, Wang X, Gong J. Sintering-resistant Ni-based reforming catalysts obtained via the nanoconfinement effect. Chem Commun (Camb) 2013; 49:9383-5. [DOI: 10.1039/c3cc43895c] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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387
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A General Overview of Scientific Production in China, Japan and Korea of the Water-Gas Shift (WGS) Process. INFORMATION 2012. [DOI: 10.3390/info3040771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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388
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Stamatakis M, Vlachos DG. Unraveling the Complexity of Catalytic Reactions via Kinetic Monte Carlo Simulation: Current Status and Frontiers. ACS Catal 2012. [DOI: 10.1021/cs3005709] [Citation(s) in RCA: 159] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michail Stamatakis
- Department of Chemical Engineering, University College London, Torrington Place, London
WC1E 7JE, U.K
| | - Dionisios G. Vlachos
- Department
of Chemical and Biomolecular
Engineering, Center for Catalytic Science and Technology, University of Delaware, 150 Academy Street, Newark,
Delaware 19716, United States
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389
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Qayyum E, Castillo VA, Warrington K, Barakat MA, Kuhn JN. Methanol oxidation over silica-supported Pt and Ag nanoparticles: Toward selective production of hydrogen and carbon dioxide. CATAL COMMUN 2012. [DOI: 10.1016/j.catcom.2012.08.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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390
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Harlacher T, Scholz M, Melin T, Wessling M. Optimizing Argon Recovery: Membrane Separation of Carbon Monoxide at High Concentrations via the Water Gas Shift. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301485q] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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391
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Cunha AF, Wu YJ, Santos JC, Rodrigues AE. Steam Reforming of Ethanol on Copper Catalysts Derived from Hydrotalcite-like Materials. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301645f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. F. Cunha
- Laboratory of Separation and
Reaction Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, 4200-465, Porto,
Portugal
| | - Y. J. Wu
- Laboratory of Separation and
Reaction Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, 4200-465, Porto,
Portugal
| | - J. C. Santos
- Laboratory of Separation and
Reaction Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, 4200-465, Porto,
Portugal
| | - A. E. Rodrigues
- Laboratory of Separation and
Reaction Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s/n, 4200-465, Porto,
Portugal
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392
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Wu Z, Li M, Mullins DR, Overbury SH. Probing the Surface Sites of CeO2 Nanocrystals with Well-Defined Surface Planes via Methanol Adsorption and Desorption. ACS Catal 2012. [DOI: 10.1021/cs300467p] [Citation(s) in RCA: 136] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zili Wu
- Chemical
Science Division, ‡Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee
37831, United States
| | - Meijun Li
- Chemical
Science Division, ‡Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee
37831, United States
| | - David R. Mullins
- Chemical
Science Division, ‡Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee
37831, United States
| | - Steven H. Overbury
- Chemical
Science Division, ‡Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee
37831, United States
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393
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394
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Kinetics modeling and main reaction schemes for the supercritical water gasification of methanol. J Supercrit Fluids 2012. [DOI: 10.1016/j.supflu.2012.05.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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395
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Karimi E, Teixeira IF, Ribeiro LP, Gomez A, Lago RM, Penner G, Kycia SW, Schlaf M. Ketonization and deoxygenation of alkanoic acids and conversion of levulinic acid to hydrocarbons using a Red Mud bauxite mining waste as the catalyst. Catal Today 2012. [DOI: 10.1016/j.cattod.2011.11.028] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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396
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Synthesis of a Novel Nano-Sized Pt/ZnO Catalyst for Water Gas Shift Reaction in Medium Temperature Application. Catal Letters 2012. [DOI: 10.1007/s10562-012-0868-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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397
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Xu W, Si R, Senanayake SD, Llorca J, Idriss H, Stacchiola D, Hanson JC, Rodriguez JA. In situ studies of CeO2-supported Pt, Ru, and Pt–Ru alloy catalysts for the water–gas shift reaction: Active phases and reaction intermediates. J Catal 2012. [DOI: 10.1016/j.jcat.2012.04.013] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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398
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Frauhiger BE, Ondisco MT, White PS, Templeton JL. Seeking a Mechanistic Analogue of the Water–Gas Shift Reaction: Carboxamido Ligand Formation and Isocyanate Elimination from Complexes Containing the Tp′PtMe Fragment. J Am Chem Soc 2012; 134:8902-10. [DOI: 10.1021/ja301213j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bryan E. Frauhiger
- W.R. Kenan Laboratory, Department of Chemistry, University of North at Chapel Hill Chapel Hill, North
Carolina 27599-3290, United States
| | - Matthew T. Ondisco
- W.R. Kenan Laboratory, Department of Chemistry, University of North at Chapel Hill Chapel Hill, North
Carolina 27599-3290, United States
| | - Peter S. White
- W.R. Kenan Laboratory, Department of Chemistry, University of North at Chapel Hill Chapel Hill, North
Carolina 27599-3290, United States
| | - Joseph L. Templeton
- W.R. Kenan Laboratory, Department of Chemistry, University of North at Chapel Hill Chapel Hill, North
Carolina 27599-3290, United States
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399
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Abstract
Our aim in this review is to assess key recent findings that point to atomically dispersed noble metals as catalytic sites on solid supports, which may be viewed as ligands bonded to the metal. Both zeolites and open metal oxide supports are considered; the former offer the advantages of uniform, crystalline structures to facilitate fundamental understanding, and the latter offer numerous advantages in applications. The notion of strong interactions between metals and supports has resurfaced in the recent literature to explain how subnanometer clusters and even atoms of noble metals such as platinum and gold survive under often harsh reaction conditions on some supports, such as ceria and perovskites. Individual cations of platinum, palladium, rhodium, or other metals anchored to supports through M-O bonds can be formed on these supports in configurations that are stable and catalytically active for several reactions illustrated here, notably, oxidation and reduction. The development of effective synthesis methods and the identification of suitable stabilizers and promoters are expected to lead to the increasing application of atomically dispersed noble metal catalysts for practical processes characterized by efficient resource utilization and cost savings.
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400
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Wei H, Gomez C, Meyer RJ. A Comparative Density Functional Theory Study of Water Gas Shift Over PdZn(111) and NiZn(111). Top Catal 2012. [DOI: 10.1007/s11244-012-9799-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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