1
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Yin Y, Luo B, Li K, Moskowitz BM, Mosevizky Lis B, Wachs IE, Zhu M, Sun Y, Zhu T, Li X. Plasma-assisted manipulation of vanadia nanoclusters for efficient selective catalytic reduction of NO x. Nat Commun 2024; 15:3592. [PMID: 38678057 PMCID: PMC11055856 DOI: 10.1038/s41467-024-47878-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 04/09/2024] [Indexed: 04/29/2024] Open
Abstract
Supported nanoclusters (SNCs) with distinct geometric and electronic structures have garnered significant attention in the field of heterogeneous catalysis. However, their directed synthesis remains a challenge due to limited efficient approaches. This study presents a plasma-assisted treatment strategy to achieve supported metal oxide nanoclusters from a rapid transformation of monomeric dispersed metal oxides. As a case study, oligomeric vanadia-dominated surface sites were derived from the classic supported V2O5-WO3/TiO2 (VWT) catalyst and showed nearly an order of magnitude increase in turnover frequency (TOF) value via an H2-plasma treatment for selective catalytic reduction of NO with NH3. Such oligomeric surface VOx sites were not only successfully observed and firstly distinguished from WOx and TiO2 by advanced electron microscopy, but also facilitated the generation of surface amide and nitrates intermediates that enable barrier-less steps in the SCR reaction as observed by modulation excitation spectroscopy technologies and predicted DFT calculations.
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Affiliation(s)
- Yong Yin
- School of Space and Environment, Beihang University, Beijing, 100191, China
| | - Bingcheng Luo
- College of Science, China Agricultural University, Beijing, 100083, China
| | - Kezhi Li
- Institute of Engineering Technology, Sinopec Catalyst Co. Ltd., Beijing, 101111, China
| | - Benjamin M Moskowitz
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Bar Mosevizky Lis
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Israel E Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA.
| | - Minghui Zhu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.
| | - Ye Sun
- School of Space and Environment, Beihang University, Beijing, 100191, China
| | - Tianle Zhu
- School of Space and Environment, Beihang University, Beijing, 100191, China
| | - Xiang Li
- School of Space and Environment, Beihang University, Beijing, 100191, China.
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2
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Pu T, Setiawan A, Foucher AC, Guo M, Jehng JM, Zhu M, Ford ME, Stach EA, Rangarajan S, Wachs IE. Revealing the Nature of Active Oxygen Species and Reaction Mechanism of Ethylene Epoxidation by Supported Ag/α-Al 2O 3 Catalysts. ACS Catal 2024; 14:406-417. [PMID: 38205022 PMCID: PMC10775145 DOI: 10.1021/acscatal.3c04361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/06/2023] [Accepted: 12/06/2023] [Indexed: 01/12/2024]
Abstract
The oxygen species on Ag catalysts and reaction mechanisms for ethylene epoxidation and ethylene combustion continue to be debated in the literature despite decades of investigation. Fundamental details of ethylene oxidation by supported Ag/α-Al2O3 catalysts were revealed with the application of high-angle annular dark-field-scanning transmission electron microscopy-energy-dispersive X-ray spectroscopy (HAADF-STEM-EDS), in situ techniques (Raman, UV-vis, X-ray diffraction (XRD), HS-LEIS), chemical probes (C2H4-TPSR and C2H4 + O2-TPSR), and steady-state ethylene oxidation and SSITKA (16O2 → 18O2 switch) studies. The Ag nanoparticles are found to carry a considerable amount of oxygen after the reaction. Density functional theory (DFT) calculations indicate the oxidative reconstructed p(4 × 4)-O-Ag(111) surface is stable relative to metallic Ag(111) under the relevant reaction environment. Multiple configurations of reactive oxygen species are present, and their relevant concentrations depend on treatment conditions. Selective ethylene oxidation to EO proceeds with surface Ag4-O2* species (dioxygen species occupying an oxygen site on a p(4 × 4)-O-Ag(111) surface) only present after strong oxidation of Ag. These experimental findings are strongly supported by the associated DFT calculations. Ethylene epoxidation proceeds via a Langmuir-Hinshelwood mechanism, and ethylene combustion proceeds via combined Langmuir-Hinshelwood (predominant) and Mars-van Krevelen (minor) mechanisms.
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Affiliation(s)
- Tiancheng Pu
- Operando
Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical
and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Adhika Setiawan
- Computational
Catalysis and Materials Design Group, Department of Chemical and Biomolecular
Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Alexandre C. Foucher
- Department
of Materials Science and Engineering, University
of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Mingyu Guo
- Operando
Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical
and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Jih-Mirn Jehng
- Operando
Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical
and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Minghui Zhu
- State
Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Michael E. Ford
- Operando
Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical
and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Eric A. Stach
- Department
of Materials Science and Engineering, University
of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Srinivas Rangarajan
- Computational
Catalysis and Materials Design Group, Department of Chemical and Biomolecular
Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando
Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical
and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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3
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Zhao K, Gao Y, Wang X, Lis BM, Liu J, Jin B, Smith J, Huang C, Gao W, Wang X, Wang X, Zheng A, Huang Z, Hu J, Schömacker R, Wachs IE, Li F. Lithium carbonate-promoted mixed rare earth oxides as a generalized strategy for oxidative coupling of methane with exceptional yields. Nat Commun 2023; 14:7749. [PMID: 38012194 PMCID: PMC10682025 DOI: 10.1038/s41467-023-43682-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 11/16/2023] [Indexed: 11/29/2023] Open
Abstract
The oxidative coupling of methane to higher hydrocarbons offers a promising autothermal approach for direct methane conversion, but its progress has been hindered by yield limitations, high temperature requirements, and performance penalties at practical methane partial pressures (~1 atm). In this study, we report a class of Li2CO3-coated mixed rare earth oxides as highly effective redox catalysts for oxidative coupling of methane under a chemical looping scheme. This catalyst achieves a single-pass C2+ yield up to 30.6%, demonstrating stable performance at 700 °C and methane partial pressures up to 1.4 atm. In-situ characterizations and quantum chemistry calculations provide insights into the distinct roles of the mixed oxide core and Li2CO3 shell, as well as the interplay between the Pr oxidation state and active peroxide formation upon Li2CO3 coating. Furthermore, we establish a generalized correlation between Pr4+ content in the mixed lanthanide oxide and hydrocarbons yield, offering a valuable optimization strategy for this class of oxidative coupling of methane redox catalysts.
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Affiliation(s)
- Kun Zhao
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Yunfei Gao
- Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, China.
| | - Xijun Wang
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA
| | - Bar Mosevitzky Lis
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, USA
| | - Junchen Liu
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Baitang Jin
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Jacob Smith
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Chuande Huang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Wenpei Gao
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA
| | - Xiaodong Wang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Xin Wang
- Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai, China
| | - Anqing Zheng
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Zhen Huang
- CAS Key Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
| | - Jianli Hu
- Department of Chemical & Biomedical Engineering, West Virginia University, Morgantown, WV, USA
| | - Reinhard Schömacker
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 124, Berlin, Germany
| | - Israel E Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, USA.
| | - Fanxing Li
- North Carolina State University, Campus Box 7905, Raleigh, NC, USA.
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4
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Yalcin O, Sourav S, Wachs IE. Design of Cr-Free Promoted Copper-Iron Oxide-Based High-Temperature Water-Gas Shift Catalysts. ACS Catal 2023; 13:12681-12691. [PMID: 37822859 PMCID: PMC10563126 DOI: 10.1021/acscatal.3c02474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/19/2023] [Indexed: 10/13/2023]
Abstract
The effect of Ce addition to the Cr-free Al-promoted Cu-Fe oxide-based catalysts is investigated. Catalyst characterization (X-ray diffraction (XRD), in situ Raman spectroscopy, high-sensitivity low-energy ion scattering (HS-LEIS), Brunauer-Emmett-Teller (BET) analysis), CO-temperature-programmed reduction chemical probing, and steady-state WGS activity reveal that (i) in the absence of Al, Ce addition via coprecipitation has a detrimental effect on the catalytic activity related to the poor thermostability and formation of less active Ce-Cu-O NPs, (ii) the addition of Ce via coprecipitation also does not improve the performance of the CuAlFe catalyst because of the formation of a thick CeOx overlayer on the active Cu-FeOx interface, and (iii) impregnation of Ce onto the CuAlFe catalyst exhibits significant improvement in catalytic performance due to the formation of a highly active CeOx-FeOx-Cu interfacial area. In summary, Al does not surface-segregate and serves as a structural promoter, while Ce and Cu surface-segregate and act as functional promoters in Ce/CuAlFe mixed oxide catalysts.
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Affiliation(s)
- Ozgen Yalcin
- College
of Engineering and Technology, American
University of the Middle East, Egaila 54200, Kuwait
| | - Sagar Sourav
- Operando
Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical
and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando
Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical
and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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5
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Mason MM, Wachs IE, Dixon DA. Assignment of Vibrational Bands of Critical Surface Species Containing Nitrogen in the Selective Catalytic Reduction of NO by NH 3. J Phys Chem A 2023; 127:240-249. [PMID: 36563176 DOI: 10.1021/acs.jpca.2c08580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The selective catalytic reduction (SCR) of NO by NH3 on metal oxides plays a key role in minimizing NOx emissions. Electronic structure calculations at the density functional theory level have been performed to predict the vibrational modes of NH3/NH4+ bound to validated cluster models of vanadium oxide bound to a TiO2 surface. Excellent agreement of the scaled calculated values with the observed bands attributed to surface-bound species is found. The presence of NH3 bound to Lewis acid sites and NH4+ bound to Brønsted acid sites when VOH groups are present is supported by our predictions. NH4+ is expected to dominate the spectra even at low concentrations, with predicted intensities 5 to 30 times greater than those predicted for surface-bound NH3. This is particularly evident in the lowest-energy N-H stretches of surface NH4+ due to partial proton transfer interactions with the vanadium oxide surface model. The current work is consistent with experimental vibrational spectroscopy results and does not support the presence of a significant amount of NH2 on the catalyst surface for the SCR reaction on VOx/TiO2. The combined experimental and computational results support the presence of both NH3- and NH4+-type species bound to the surface.
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Affiliation(s)
- Marcos M Mason
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
| | - Israel E Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Iacocca Hall, Bethlehem, Pennsylvania 18015, United States
| | - David A Dixon
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa, Alabama 35487-0336, United States
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6
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Jiang X, Lis BM, Purdy SC, Paladugu S, Fung V, Quan W, Bao Z, Yang W, He Y, Sumpter BG, Page K, Wachs IE, Wu Z. CO 2-Assisted Oxidative Dehydrogenation of Propane over VO x/In 2O 3 Catalysts: Interplay between Redox Property and Acid–Base Interactions. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao Jiang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Bar Mosevitzky Lis
- Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Stephen C. Purdy
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Sreya Paladugu
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Victor Fung
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Wenying Quan
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 301 Ferst Dr., Atlanta, Georgia 30332, United States
| | - Zhenghong Bao
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Weiwei Yang
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Yang He
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Bobby G. Sumpter
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Katharine Page
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Israel E. Wachs
- Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Zili Wu
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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7
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Wachs IE. Progress in Catalysis by Mixed Oxides: From Confusion to Catalysis Science. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.08.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Sourav S, Kiani D, Wang Y, Baltrusaitis J, Fushimi RR, Wachs IE. Molecular structure and catalytic promotional effect of Mn on supported Na2WO4/SiO2 catalysts for oxidative coupling of methane (OCM) reaction. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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9
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Pu T, Setiawan A, Mosevitzky Lis B, Zhu M, Ford ME, Rangarajan S, Wachs IE. Nature and Reactivity of Oxygen Species on/in Silver Catalysts during Ethylene Oxidation. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tiancheng Pu
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Adhika Setiawan
- Computational Catalysis and Materials Design Group, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Bar Mosevitzky Lis
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Minghui Zhu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People’s Republic of China
| | - Michael E. Ford
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Srinivas Rangarajan
- Computational Catalysis and Materials Design Group, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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10
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Zabilska A, Clark AH, Moskowitz BM, Wachs IE, Kakiuchi Y, Copéret C, Nachtegaal M, Kröcher O, Safonova OV. Redox Dynamics of Active VO x Sites Promoted by TiO x during Oxidative Dehydrogenation of Ethanol Detected by Operando Quick XAS. JACS Au 2022; 2:762-776. [PMID: 35388376 PMCID: PMC8977985 DOI: 10.1021/jacsau.2c00027] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/25/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
Titania-supported vanadia (VO x /TiO2) catalysts exhibit outstanding catalytic in a number of selective oxidation and reduction processes. In spite of numerous investigations, the nature of redox transformations of vanadium and titanium involved in various catalytic processes remains difficult to detect and correlate to the rate of products formation. In this work, we studied the redox dynamics of active sites in a bilayered 5% V2O5/15% TiO2/SiO2 catalyst (consisting of submonolayer VO x species anchored onto a TiO x monolayer, which in turn is supported on SiO2) during the oxidative dehydrogenation of ethanol. The VO x species in 5% V2O5/15% TiO2/SiO2 show high selectivity to acetaldehyde and an ca. 40 times higher acetaldehyde formation rate in comparison to VO x species supported on SiO2 with a similar density. Operando time-resolved V and Ti K-edge X-ray absorption near-edge spectroscopy, coupled with a transient experimental strategy, quantitatively showed that the formation of acetaldehyde over 5% V2O5/15% TiO2/SiO2 is kinetically coupled to the formation of a V4+ intermediate, while the formation of V3+ is delayed and 10-70 times slower. The low-coordinated nature of various redox states of VO x species (V5+, V4+, and V3+) in the 5% V2O5/15% TiO2/SiO2 catalyst is confirmed using the extensive database of V K-edge XANES spectra of standards and specially synthesized molecular crystals. Much weaker redox activity of the Ti4+/Ti3+ couple was also detected; however, it was found to not be kinetically coupled to the rate-determining step of ethanol oxidation. Thus, the promoter effect of TiO x is rather complex. TiO x species might be involved in a fast electron transport between VO x species and might affect the electronic structure of VO x , thereby promoting their reducibility. This study demonstrates the high potential of element-specific operando X-ray absorption spectroscopy for uncovering complex catalytic mechanisms involving the redox kinetics of various metal oxides.
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Affiliation(s)
- Anna Zabilska
- Paul
Scherrer Institute, 5232 Villigen, Switzerland
- École
Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | | | - Benjamin M. Moskowitz
- Operando Molecular Spectroscopy &
Catalysis Laboratory,
Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy &
Catalysis Laboratory,
Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Yuya Kakiuchi
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, CH-8093 Zürich, Switzerland
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, CH-8093 Zürich, Switzerland
| | | | - Oliver Kröcher
- Paul
Scherrer Institute, 5232 Villigen, Switzerland
- École
Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
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11
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Affiliation(s)
- Bin Zhang
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Shuting Xiang
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Anatoly I. Frenkel
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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12
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Zhang B, Ford ME, Ream E, Wachs IE. Olefin metathesis over supported MoO x catalysts: influence of the oxide support. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01612e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Supported MoOx catalysts on oxide supports (Al2O3, TiO2, ZrO2, SiO2) were synthesized for propylene metathesis, characterized with in situ spectroscopies (DRIFTS, Raman, UV-vis) and chemically probed with propylene-TPSR, ethylene/2-butene titration.
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Affiliation(s)
- Bin Zhang
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Michael E. Ford
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Eli Ream
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Israel E. Wachs
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
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13
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Kiani D, Sourav S, Wachs IE, Baltrusaitis J. A combined computational and experimental study of methane activation during oxidative coupling of methane (OCM) by surface metal oxide catalysts. Chem Sci 2021; 12:14143-14158. [PMID: 34760199 PMCID: PMC8565385 DOI: 10.1039/d1sc02174e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 10/04/2021] [Indexed: 11/21/2022] Open
Abstract
The experimentally validated computational models developed herein, for the first time, show that Mn-promotion does not enhance the activity of the surface Na2WO4 catalytic active sites for CH4 heterolytic dissociation during OCM. Contrary to previous understanding, it is demonstrated that Mn-promotion poisons the surface WO4 catalytic active sites resulting in surface WO5 sites with retarded kinetics for C-H scission. On the other hand, dimeric Mn2O5 surface sites, identified and studied via ab initio molecular dynamics and thermodynamics, were found to be more efficient in activating CH4 than the poisoned surface WO5 sites or the original WO4 sites. However, the surface reaction intermediates formed from CH4 activation over the Mn2O5 surface sites are more stable than those formed over the Na2WO4 surface sites. The higher stability of the surface intermediates makes their desorption unfavorable, increasing the likelihood of over-oxidation to CO x , in agreement with the experimental findings in the literature on Mn-promoted catalysts. Consequently, the Mn-promoter does not appear to have an essential positive role in synergistically tuning the structure of the Na2WO4 surface sites towards CH4 activation but can yield MnO x surface sites that activate CH4 faster than Na2WO4 surface sites, but unselectively.
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Affiliation(s)
- Daniyal Kiani
- Department of Chemical and Biomolecular Engineering, Lehigh University B336 Iacocca Hall, 111 Research Drive Bethlehem PA 18015 USA
| | - Sagar Sourav
- Department of Chemical and Biomolecular Engineering, Lehigh University B336 Iacocca Hall, 111 Research Drive Bethlehem PA 18015 USA
| | - Israel E Wachs
- Department of Chemical and Biomolecular Engineering, Lehigh University B336 Iacocca Hall, 111 Research Drive Bethlehem PA 18015 USA
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University B336 Iacocca Hall, 111 Research Drive Bethlehem PA 18015 USA
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14
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Gu M, Dai S, Qiu R, Ford ME, Cao C, Wachs IE, Zhu M. Structure–Activity Relationships of Copper- and Potassium-Modified Iron Oxide Catalysts during Reverse Water–Gas Shift Reaction. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03792] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mengwei Gu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Sheng Dai
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Runfa Qiu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Michael E. Ford
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Chenxi Cao
- Key Laboratory of Smart Manufacturing in Energy Chemical Process, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Minghui Zhu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
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15
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Sourav S, Wang Y, Kiani D, Baltrusaitis J, Fushimi RR, Wachs IE. New Mechanistic and Reaction Pathway Insights for Oxidative Coupling of Methane (OCM) over Supported Na
2
WO
4
/SiO
2
Catalysts. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sagar Sourav
- Biological and Chemical Science and Engineering Energy Environment Science & Technology Idaho National Laboratory Idaho Falls ID 83415 USA
- Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem PA 18015 USA
| | - Yixiao Wang
- Biological and Chemical Science and Engineering Energy Environment Science & Technology Idaho National Laboratory Idaho Falls ID 83415 USA
| | - Daniyal Kiani
- Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem PA 18015 USA
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem PA 18015 USA
| | - Rebecca R. Fushimi
- Biological and Chemical Science and Engineering Energy Environment Science & Technology Idaho National Laboratory Idaho Falls ID 83415 USA
| | - Israel E. Wachs
- Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem PA 18015 USA
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16
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Sourav S, Wang Y, Kiani D, Baltrusaitis J, Fushimi RR, Wachs IE. New Mechanistic and Reaction Pathway Insights for Oxidative Coupling of Methane (OCM) over Supported Na 2 WO 4 /SiO 2 Catalysts. Angew Chem Int Ed Engl 2021; 60:21502-21511. [PMID: 34339591 DOI: 10.1002/anie.202108201] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Indexed: 12/14/2022]
Abstract
The complex structure of the catalytic active phase, and surface-gas reaction networks have hindered understanding of the oxidative coupling of methane (OCM) reaction mechanism by supported Na2 WO4 /SiO2 catalysts. The present study demonstrates, with the aid of in situ Raman spectroscopy and chemical probe (H2 -TPR, TAP and steady-state kinetics) experiments, that the long speculated crystalline Na2 WO4 active phase is unstable and melts under OCM reaction conditions, partially transforming to thermally stable surface Na-WOx sites. Kinetic analysis via temporal analysis of products (TAP) and steady-state OCM reaction studies demonstrate that (i) surface Na-WOx sites are responsible for selectively activating CH4 to C2 Hx and over-oxidizing CHy to CO and (ii) molten Na2 WO4 phase is mainly responsible for over-oxidation of CH4 to CO2 and also assists in oxidative dehydrogenation of C2 H6 to C2 H4 . These new insights reveal the nature of catalytic active sites and resolve the OCM reaction mechanism over supported Na2 WO4 /SiO2 catalysts.
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Affiliation(s)
- Sagar Sourav
- Biological and Chemical Science and Engineering, Energy Environment Science & Technology, Idaho National Laboratory, Idaho Falls, ID, 83415, USA.,Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Yixiao Wang
- Biological and Chemical Science and Engineering, Energy Environment Science & Technology, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
| | - Daniyal Kiani
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Rebecca R Fushimi
- Biological and Chemical Science and Engineering, Energy Environment Science & Technology, Idaho National Laboratory, Idaho Falls, ID, 83415, USA
| | - Israel E Wachs
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
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17
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Lai JK, Jaegers NR, Lis BM, Guo M, Ford ME, Walter E, Wang Y, Hu JZ, Wachs IE. Structure–Activity Relationships of Hydrothermally Aged Titania-Supported Vanadium–Tungsten Oxide Catalysts for SCR of NO x Emissions with NH 3. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02130] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun-Kun Lai
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Nicholas R. Jaegers
- Institute for Integrated Catalysis and Earth and Biological Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Bar Mosevitzky Lis
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Mingyu Guo
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Michael E. Ford
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Eric Walter
- Institute for Integrated Catalysis and Earth and Biological Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yong Wang
- Institute for Integrated Catalysis and Earth and Biological Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Jian Zhi Hu
- Institute for Integrated Catalysis and Earth and Biological Science Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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18
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Sourav S, Wang Y, Kiani D, Baltrusaitis J, Fushimi RR, Wachs IE. Resolving the Types and Origin of Active Oxygen Species Present in Supported Mn-Na 2WO 4/SiO 2 Catalysts for Oxidative Coupling of Methane. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02315] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sagar Sourav
- Biological and Chemical Science and Engineering, Energy Environment Science & Technology, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Yixiao Wang
- Biological and Chemical Science and Engineering, Energy Environment Science & Technology, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Daniyal Kiani
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Rebecca R. Fushimi
- Biological and Chemical Science and Engineering, Energy Environment Science & Technology, Idaho National Laboratory, Idaho Falls, Idaho 83415, United States
| | - Israel E. Wachs
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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19
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Kiani D, Sourav S, Baltrusaitis J, Wachs IE. Elucidating the Effects of Mn Promotion on SiO 2-Supported Na-Promoted Tungsten Oxide Catalysts for Oxidative Coupling of Methane (OCM). ACS Catal 2021. [DOI: 10.1021/acscatal.1c01392] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Daniyal Kiani
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Sagar Sourav
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
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20
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Zhang B, Lwin S, Xiang S, Frenkel AI, Wachs IE. Tuning the Number of Active Sites and Turnover Frequencies by Surface Modification of Supported ReO 4/(SiO 2–Al 2O 3) Catalysts for Olefin Metathesis. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05279] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bin Zhang
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Soe Lwin
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Shuting Xiang
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
| | - Anatoly I. Frenkel
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, United States
- Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy and Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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21
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Affiliation(s)
- Bin Zhang
- Operando Molecular Spectroscopy & Catalysis Laboratory Department of Chemical and Biomolecular Engineering Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory Department of Chemical and Biomolecular Engineering Lehigh University, Bethlehem, Pennsylvania 18015, United States
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22
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Abstract
This review focuses on recent fundamental insights about methane dehydroaromatization (MDA) to benzene over ZSM-5-supported transition metal oxide-based catalysts (MOx/ZSM-5, where M = V, Cr, Mo, W, Re, Fe). Benzene is an important organic intermediate, used for the synthesis of chemicals like ethylbenzene, cumene, cyclohexane, nitrobenzene and alkylbenzene. Current production of benzene is primarily from crude oil processing, but due to the abundant availability of natural gas, there is much recent interest in developing direct processes to convert CH4 to liquid chemicals. Among the various gas-to-liquid methods, the thermodynamically-limited Methane DehydroAromatization (MDA) to benzene under non-oxidative conditions appears very promising as it circumvents deep oxidation of CH4 to CO2 and does not require the use of a co-reactant. The findings from the MDA catalysis literature is critically analyzed with emphasis on in situ and operando spectroscopic characterization to understand the molecular level details regarding the catalytic sites before and during the MDA reaction. Specifically, this review discusses the anchoring sites of the supported MOx species on the ZSM-5 support, molecular structures of the initial dispersed surface MOx sites, nature of the active sites during MDA, reaction mechanisms, rate-determining step, kinetics and catalyst activity of the MDA reaction. Finally, suggestions are given regarding future experimental investigations to fill the information gaps currently found in the literature.
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Affiliation(s)
- Daniyal Kiani
- Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA 18015, USA.
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23
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Jehng J, Wachs IE, Patience GS, Dai Y. Experimental methods in chemical engineering: Temperature programmed surface reaction spectroscopy—
TPSR. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.23913] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jih‐Mirn Jehng
- Chemical Engineering National Chung Hsing University Taichung Taiwan
| | - Israel E. Wachs
- Chemical and Biomolecular Engineering, Operando Molecular Spectroscopy and Catalysis Laboratory Lehigh University Bethlehem Pennsylvania USA
| | | | - Yong‐Ming Dai
- Chemical and Materials Engineering National Chin‐Yi University of Technology Taichung Taiwan
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24
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Mason MM, Lee ZR, Vasiliu M, Wachs IE, Dixon DA. Initial Steps in the Selective Catalytic Reduction of NO with NH3 by TiO2-Supported Vanadium Oxides. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03693] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marcos M. Mason
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa Alabama 35487-0336, United States
| | - Zachary R. Lee
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa Alabama 35487-0336, United States
| | - Monica Vasiliu
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa Alabama 35487-0336, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Iacocca Hall, Bethlehem Pennsylvania 18015, United States
| | - David A. Dixon
- Department of Chemistry and Biochemistry, The University of Alabama, Shelby Hall, Tuscaloosa Alabama 35487-0336, United States
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25
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Zhu M, Tian P, Ford ME, Chen J, Xu J, Han YF, Wachs IE. Nature of Reactive Oxygen Intermediates on Copper-Promoted Iron–Chromium Oxide Catalysts during CO 2 Activation. ACS Catal 2020. [DOI: 10.1021/acscatal.0c01311] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Minghui Zhu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Pengfei Tian
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Michael E. Ford
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Jiacheng Chen
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jing Xu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yi-Fan Han
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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26
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Kiani D, Sourav S, Taifan W, Calatayud M, Tielens F, Wachs IE, Baltrusaitis J. Existence and Properties of Isolated Catalytic Sites on the Surface of β-Cristobalite-Supported, Doped Tungsten Oxide Catalysts (WOx/β-SiO2, Na-WOx/β-SiO2, Mn-WOx/β-SiO2) for Oxidative Coupling of Methane (OCM): A Combined Periodic DFT and Experimental Study. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05591] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniyal Kiani
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Sagar Sourav
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - William Taifan
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Monica Calatayud
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, F-75005 Paris, France
| | - Frederik Tielens
- General Chemistry (ALGC)-Materials Modelling Group, Vrije Universiteit Brussel (Free University Brussels-VUB), Pleinlaan 2, 1050 Brussel, Belgium
| | - Israel E. Wachs
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca
Hall, 111 Research Drive, Bethlehem, Pennsylvania 18015, United States
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27
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Kiani D, Sourav S, Wachs IE, Baltrusaitis J. Synthesis and molecular structure of model silica-supported tungsten oxide catalysts for oxidative coupling of methane (OCM). Catal Sci Technol 2020. [DOI: 10.1039/d0cy00289e] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Catalysts with only dispersed phase Na–WO4 sites where Na/W < 2 are slightly less active but significantly more C2 selective than the traditional Na2WO4/SiO2 catalysts that contain a crystalline phase where Na/W = 2.
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Affiliation(s)
- Daniyal Kiani
- Department of Chemical and Biomolecular Engineering
- Lehigh University
- Bethlehem
- USA
| | - Sagar Sourav
- Department of Chemical and Biomolecular Engineering
- Lehigh University
- Bethlehem
- USA
| | - Israel E. Wachs
- Department of Chemical and Biomolecular Engineering
- Lehigh University
- Bethlehem
- USA
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering
- Lehigh University
- Bethlehem
- USA
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28
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Yalcin O, Molinari Erwin JE, Gerceker D, Onal I, Wachs IE. Role of Local Structure on Catalytic Reactivity: Comparison of Methanol Oxidation by Aqueous Bioinorganic Enzyme Mimic (Vanadium Haloperoxidase) and Vanadia-Based Heterogeneous Catalyst (Supported VO4/SiO2). ACS Catal 2019. [DOI: 10.1021/acscatal.9b02450] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ozgen Yalcin
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
- Department of Chemical Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Julie E. Molinari Erwin
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Duygu Gerceker
- Department of Chemical Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Isik Onal
- Department of Chemical Engineering, Middle East Technical University, Ankara 06800, Turkey
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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29
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Zhu M, Tian P, Chen J, Ford ME, Xu J, Wachs IE, Han Y. Activation and deactivation of the commercial‐type CuO–Cr
2
O
3
–Fe
2
O
3
high temperature shift catalyst. AIChE J 2019. [DOI: 10.1002/aic.16846] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Minghui Zhu
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Pengfei Tian
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Jiacheng Chen
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Michael E. Ford
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem Pennsylvania
| | - Jing Xu
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem Pennsylvania
| | - Yi‐Fan Han
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai China
- Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education Zhengzhou University Zhengzhou China
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30
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31
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Jaegers NR, Lai J, He Y, Walter E, Dixon DA, Vasiliu M, Chen Y, Wang C, Hu MY, Mueller KT, Wachs IE, Wang Y, Hu JZ. Inside Back Cover: Mechanism by which Tungsten Oxide Promotes the Activity of Supported V
2
O
5
/TiO
2
Catalysts for NO
X
Abatement: Structural Effects Revealed by
51
V MAS NMR Spectroscopy (Angew. Chem. Int. Ed. 36/2019). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/anie.201908846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nicholas R. Jaegers
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
- Voiland School of Chemical Engineering and BioengineeringWashington State University Pullman WA 99163 USA
| | - Jun‐Kun Lai
- OperandoMolecular Spectroscopy & Catalysis LaboratoryLehigh University Bethlehem PA 18015 USA
| | - Yang He
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Eric Walter
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - David A. Dixon
- Department of ChemistryThe University of Alabama Tuscaloosa AL 35487 USA
| | - Monica Vasiliu
- Department of ChemistryThe University of Alabama Tuscaloosa AL 35487 USA
| | - Ying Chen
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Chongmin Wang
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Mary Y. Hu
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Karl T. Mueller
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Israel E. Wachs
- OperandoMolecular Spectroscopy & Catalysis LaboratoryLehigh University Bethlehem PA 18015 USA
| | - Yong Wang
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
- Voiland School of Chemical Engineering and BioengineeringWashington State University Pullman WA 99163 USA
| | - Jian Zhi Hu
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
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32
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Jaegers NR, Lai J, He Y, Walter E, Dixon DA, Vasiliu M, Chen Y, Wang C, Hu MY, Mueller KT, Wachs IE, Wang Y, Hu JZ. Innenrücktitelbild: Mechanism by which Tungsten Oxide Promotes the Activity of Supported V
2
O
5
/TiO
2
Catalysts for NO
X
Abatement: Structural Effects Revealed by
51
V MAS NMR Spectroscopy (Angew. Chem. 36/2019). Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nicholas R. Jaegers
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
- Voiland School of Chemical Engineering and BioengineeringWashington State University Pullman WA 99163 USA
| | - Jun‐Kun Lai
- OperandoMolecular Spectroscopy & Catalysis LaboratoryLehigh University Bethlehem PA 18015 USA
| | - Yang He
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Eric Walter
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - David A. Dixon
- Department of ChemistryThe University of Alabama Tuscaloosa AL 35487 USA
| | - Monica Vasiliu
- Department of ChemistryThe University of Alabama Tuscaloosa AL 35487 USA
| | - Ying Chen
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Chongmin Wang
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Mary Y. Hu
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Karl T. Mueller
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
| | - Israel E. Wachs
- OperandoMolecular Spectroscopy & Catalysis LaboratoryLehigh University Bethlehem PA 18015 USA
| | - Yong Wang
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
- Voiland School of Chemical Engineering and BioengineeringWashington State University Pullman WA 99163 USA
| | - Jian Zhi Hu
- Institute for Integrated Catalysis and Earth and Biological Science DirectoratePacific Northwest National Laboratory Richland WA 99354 USA
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33
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Jaegers NR, Lai J, He Y, Walter E, Dixon DA, Vasiliu M, Chen Y, Wang C, Hu MY, Mueller KT, Wachs IE, Wang Y, Hu JZ. Mechanism by which Tungsten Oxide Promotes the Activity of Supported V
2
O
5
/TiO
2
Catalysts for NO
X
Abatement: Structural Effects Revealed by
51
V MAS NMR Spectroscopy. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904503] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Nicholas R. Jaegers
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
- Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99163 USA
| | - Jun‐Kun Lai
- OperandoMolecular Spectroscopy & Catalysis Laboratory Lehigh University Bethlehem PA 18015 USA
| | - Yang He
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Eric Walter
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - David A. Dixon
- Department of Chemistry The University of Alabama Tuscaloosa AL 35487 USA
| | - Monica Vasiliu
- Department of Chemistry The University of Alabama Tuscaloosa AL 35487 USA
| | - Ying Chen
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Chongmin Wang
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Mary Y. Hu
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Karl T. Mueller
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Israel E. Wachs
- OperandoMolecular Spectroscopy & Catalysis Laboratory Lehigh University Bethlehem PA 18015 USA
| | - Yong Wang
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
- Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99163 USA
| | - Jian Zhi Hu
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
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34
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Jaegers NR, Lai J, He Y, Walter E, Dixon DA, Vasiliu M, Chen Y, Wang C, Hu MY, Mueller KT, Wachs IE, Wang Y, Hu JZ. Mechanism by which Tungsten Oxide Promotes the Activity of Supported V
2
O
5
/TiO
2
Catalysts for NO
X
Abatement: Structural Effects Revealed by
51
V MAS NMR Spectroscopy. Angew Chem Int Ed Engl 2019; 58:12609-12616. [DOI: 10.1002/anie.201904503] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Nicholas R. Jaegers
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
- Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99163 USA
| | - Jun‐Kun Lai
- OperandoMolecular Spectroscopy & Catalysis Laboratory Lehigh University Bethlehem PA 18015 USA
| | - Yang He
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Eric Walter
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - David A. Dixon
- Department of Chemistry The University of Alabama Tuscaloosa AL 35487 USA
| | - Monica Vasiliu
- Department of Chemistry The University of Alabama Tuscaloosa AL 35487 USA
| | - Ying Chen
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Chongmin Wang
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Mary Y. Hu
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Karl T. Mueller
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
| | - Israel E. Wachs
- OperandoMolecular Spectroscopy & Catalysis Laboratory Lehigh University Bethlehem PA 18015 USA
| | - Yong Wang
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
- Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99163 USA
| | - Jian Zhi Hu
- Institute for Integrated Catalysis and Earth and Biological Science Directorate Pacific Northwest National Laboratory Richland WA 99354 USA
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35
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Zhu M, Tian P, Kurtz R, Lunkenbein T, Xu J, Schlögl R, Wachs IE, Han Y. Strong Metal–Support Interactions between Copper and Iron Oxide during the High‐Temperature Water‐Gas Shift Reaction. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903298] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Minghui Zhu
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai 200237 China
| | - Pengfei Tian
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai 200237 China
| | - Ravi Kurtz
- Operando Molecular Spectroscopy & Catalysis Laboratory Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem PA 18015 USA
| | - Thomas Lunkenbein
- Department of Inorganic Chemistry Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Germany
| | - Jing Xu
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai 200237 China
| | - Robert Schlögl
- Department of Inorganic Chemistry Fritz-Haber-Institut der Max-Planck-Gesellschaft Faradayweg 4–6 14195 Berlin Germany
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory Department of Chemical and Biomolecular Engineering Lehigh University Bethlehem PA 18015 USA
| | - Yi‐Fan Han
- State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai 200237 China
- Research Center of Heterogeneous Catalysis and Engineering Sciences School of Chemical Engineering and Energy Zhengzhou University Zhengzhou 450001 China
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36
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Zhu M, Tian P, Kurtz R, Lunkenbein T, Xu J, Schlögl R, Wachs IE, Han YF. Strong Metal-Support Interactions between Copper and Iron Oxide during the High-Temperature Water-Gas Shift Reaction. Angew Chem Int Ed Engl 2019; 58:9083-9087. [PMID: 31074080 DOI: 10.1002/anie.201903298] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 04/16/2019] [Indexed: 11/09/2022]
Abstract
The commercial high-temperature water-gas shift (HT-WGS) catalyst consists of CuO-Cr2 O3 -Fe2 O3 , where Cu functions as a chemical promoter to increase the catalytic activity, but its promotion mechanism is poorly understood. In this work, a series of iron-based model catalysts were investigated with in situ or pseudo in situ characterization, steady-state WGS reaction, and density function theory (DFT) calculations. For the first time, a strong metal-support interaction (SMSI) between Cu and FeOx was directly observed. During the WGS reaction, a thin FeOx overlayer migrates onto the metallic Cu particles, creating a hybrid surface structure with Cu-FeOx interfaces. The synergistic interaction between Cu and FeOx not only stabilizes the Cu clusters, but also provides new catalytic active sites that facilitate CO adsorption, H2 O dissociation, and WGS reaction. These new fundamental insights can potentially guide the rational design of improved iron-based HT-WGS catalysts.
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Affiliation(s)
- Minghui Zhu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Pengfei Tian
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ravi Kurtz
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Thomas Lunkenbein
- Department of Inorganic Chemistry, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany
| | - Jing Xu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Robert Schlögl
- Department of Inorganic Chemistry, Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany
| | - Israel E Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, PA, 18015, USA
| | - Yi-Fan Han
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China.,Research Center of Heterogeneous Catalysis and Engineering Sciences, School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, 450001, China
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37
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Kiani D, Sourav S, Baltrusaitis J, Wachs IE. Oxidative Coupling of Methane (OCM) by SiO2-Supported Tungsten Oxide Catalysts Promoted with Mn and Na. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01585] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniyal Kiani
- Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Sagar Sourav
- Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Jonas Baltrusaitis
- Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Department of Chemical & Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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38
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Polo-Garzon F, Fung V, Nguyen L, Tang Y, Tao F, Cheng Y, Daemen LL, Ramirez-Cuesta AJ, Foo GS, Zhu M, Wachs IE, Jiang DE, Wu Z. Elucidation of the Reaction Mechanism for High-Temperature Water Gas Shift over an Industrial-Type Copper–Chromium–Iron Oxide Catalyst. J Am Chem Soc 2019; 141:7990-7999. [DOI: 10.1021/jacs.9b03516] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Felipe Polo-Garzon
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Victor Fung
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Luan Nguyen
- Departments of Chemical Engineering and Chemistry, The University of Kansas, Lawrence, Kansas 66047, United States
| | - Yu Tang
- Departments of Chemical Engineering and Chemistry, The University of Kansas, Lawrence, Kansas 66047, United States
| | - Franklin Tao
- Departments of Chemical Engineering and Chemistry, The University of Kansas, Lawrence, Kansas 66047, United States
| | - Yongqiang Cheng
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Luke L. Daemen
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Anibal J. Ramirez-Cuesta
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Guo Shiou Foo
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Minghui Zhu
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - De-en Jiang
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Zili Wu
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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39
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Keturakis CJ, Lapina OB, Shubin AA, Terskikh VV, Papulovskiy E, Yudaev IV, Paukshtis EA, Wachs IE. Pyrolysis of the Cellulose Fraction of Biomass in the Presence of Solid Acid Catalysts: An Operando Spectroscopy and Theoretical Investigation. ChemSusChem 2018; 11:4044-4059. [PMID: 30338653 DOI: 10.1002/cssc.201802073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Indexed: 06/08/2023]
Abstract
Biomass pyrolysis by solid acid catalysts is one of many promising technologies for sustainable production of hydrocarbon liquid fuels and value-added chemicals, but these complex chemical transformations are still poorly understood. A series of well-defined model SiO2 -supported alumina catalysts were synthesized and molecularly characterized, under dehydrated conditions and during biomass pyrolysis, with the aim of establishing fundamental catalyst structure-activity/selectivity relationships. The nature and corresponding acidity of the supported AlOx nanostructures on SiO2 were determined with 27 Al/1 H NMR and IR spectroscopy of chemisorbed CO, and DFT calculations. Operando time-resolved IR-Raman-MS spectroscopy studies revealed the molecular transformations taking place during biomass pyrolysis. The molecular transformations during biomass pyrolysis depended on both the domain size of the AlOx cluster and molecular nature of the biomass feedstock. These new insights allowed the establishment of fundamental structure-activity/selectivity relationships during biomass pyrolysis.
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Affiliation(s)
- Christopher J Keturakis
- Operando Molecular Spectroscopy & Catalysis Research Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, PA, 18015, USA
- Current address: Cummins Emission Solutions, Stoughton, WI, 53589, USA
| | - Olga B Lapina
- Boreskov Institute of Catalysis, pr. Lavrentieva, 5, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova, 2, 630090, Novosibirsk, Russia
| | - Aleksandr A Shubin
- Boreskov Institute of Catalysis, pr. Lavrentieva, 5, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova, 2, 630090, Novosibirsk, Russia
| | - Victor V Terskikh
- Department of Chemistry, University of Ottawa, Ottawa, Ontario, K1N6N5, Canada
| | - Evgeniy Papulovskiy
- Boreskov Institute of Catalysis, pr. Lavrentieva, 5, 630090, Novosibirsk, Russia
| | - Ivan V Yudaev
- Boreskov Institute of Catalysis, pr. Lavrentieva, 5, 630090, Novosibirsk, Russia
| | - Eugenii A Paukshtis
- Boreskov Institute of Catalysis, pr. Lavrentieva, 5, 630090, Novosibirsk, Russia
- Novosibirsk State University, Pirogova, 2, 630090, Novosibirsk, Russia
| | - Israel E Wachs
- Operando Molecular Spectroscopy & Catalysis Research Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, PA, 18015, USA
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40
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Kortewille B, Wachs IE, Cibura N, Pfingsten O, Bacher G, Muhler M, Strunk J. Photocatalytic Methanol Oxidation by Supported Vanadium Oxide Species: Influence of Support and Degree of Oligomerization. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800490] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bianca Kortewille
- Heterogene Photokatalyse Leibniz‐Institut für Katalyse e. V. an der Universität Rostock 18059 Rostock Germany
- Lehrstuhl für Technische Chemie Ruhr‐Universität Bochum 44801 Bochum Germany
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Lab Lehigh University 18015‐3128 Bethlehem PA USA
| | - Niklas Cibura
- AG Nanobasierte Heterogene Katalysatoren Max‐Planck‐Institut für Chemische Energiekonversion 45470 Mülheim/Ruhr Germany
| | - Oliver Pfingsten
- Werkstoffe der Elektrotechnik, and Center for Nanointegration Duisburg‐Essen (CENIDE) Universität Duisburg‐Essen 47057 Duisburg Germany
| | - Gerd Bacher
- Werkstoffe der Elektrotechnik, and Center for Nanointegration Duisburg‐Essen (CENIDE) Universität Duisburg‐Essen 47057 Duisburg Germany
| | - Martin Muhler
- Lehrstuhl für Technische Chemie Ruhr‐Universität Bochum 44801 Bochum Germany
| | - Jennifer Strunk
- Heterogene Photokatalyse Leibniz‐Institut für Katalyse e. V. an der Universität Rostock 18059 Rostock Germany
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41
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42
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Phivilay SP, Roberts CA, Gamalski AD, Stach EA, Zhang S, Nguyen L, Tang Y, Xiong A, Puretzky AA, Tao FF, Domen K, Wachs IE. Anatomy of a Visible Light Activated Photocatalyst for Water Splitting. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01388] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Somphonh P. Phivilay
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Charles A. Roberts
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Andrew D. Gamalski
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Eric A. Stach
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Shiran Zhang
- Department of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Luan Nguyen
- Department of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Yu Tang
- Department of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Anke Xiong
- Department of Chemical System Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Alexander A. Puretzky
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Franklin Feng Tao
- Department of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Kazunari Domen
- Department of Chemical System Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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43
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Kortewille B, Wachs IE, Cibura N, Pfingsten O, Bacher G, Muhler M, Strunk J. Front Cover: Proof of Equivalent Catalytic Functionality upon Photon-Induced and Thermal Activation of Supported Isolated Vanadia Species in Methanol Oxidation (ChemCatChem 11/2018). ChemCatChem 2018. [DOI: 10.1002/cctc.201800807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Bianca Kortewille
- Heterogene Photokatalyse; Leibniz-Institut für Katalyse e. V. an der; Universität Rostock; 18059 Rostock Germany
- Lehrstuhl für Technische Chemie; Ruhr-Universität Bochum; 44801 Bochum Germany
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Lab; Lehigh University; Bethlehem PA 18015-3128 USA
| | - Niklas Cibura
- AG Nanobasierte Heterogene Katalysatoren; Max-Planck-Institut für Chemische Energiekonversion; 45470 Mülheim/Ruhr Germany
| | - Oliver Pfingsten
- Werkstoffe der Elektrotechnik, and Center for, Nanointegration Duisburg-Essen (CENIDE); Universität Duisburg-Essen; 47057 Duisburg Germany
| | - Gerd Bacher
- Werkstoffe der Elektrotechnik, and Center for, Nanointegration Duisburg-Essen (CENIDE); Universität Duisburg-Essen; 47057 Duisburg Germany
| | - Martin Muhler
- Lehrstuhl für Technische Chemie; Ruhr-Universität Bochum; 44801 Bochum Germany
| | - Jennifer Strunk
- Heterogene Photokatalyse; Leibniz-Institut für Katalyse e. V. an der; Universität Rostock; 18059 Rostock Germany
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44
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Kortewille B, Wachs IE, Cibura N, Pfingsten O, Bacher G, Muhler M, Strunk J. Proof of Equivalent Catalytic Functionality upon Photon-Induced and Thermal Activation of Supported Isolated Vanadia Species in Methanol Oxidation. ChemCatChem 2018. [DOI: 10.1002/cctc.201800736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bianca Kortewille
- Heterogene Photokatalyse; Leibniz-Institut für Katalyse e. V. an der; Universität Rostock; 18059 Rostock Germany
- Lehrstuhl für Technische Chemie; Ruhr-Universität Bochum; 44801 Bochum Germany
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Lab; Lehigh University; Bethlehem PA 18015-3128 USA
| | - Niklas Cibura
- AG Nanobasierte Heterogene Katalysatoren; Max-Planck-Institut für Chemische Energiekonversion; 45470 Mülheim/Ruhr Germany
| | - Oliver Pfingsten
- Werkstoffe der Elektrotechnik, and Center for, Nanointegration Duisburg-Essen (CENIDE); Universität Duisburg-Essen; 47057 Duisburg Germany
| | - Gerd Bacher
- Werkstoffe der Elektrotechnik, and Center for, Nanointegration Duisburg-Essen (CENIDE); Universität Duisburg-Essen; 47057 Duisburg Germany
| | - Martin Muhler
- Lehrstuhl für Technische Chemie; Ruhr-Universität Bochum; 44801 Bochum Germany
| | - Jennifer Strunk
- Heterogene Photokatalyse; Leibniz-Institut für Katalyse e. V. an der; Universität Rostock; 18059 Rostock Germany
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45
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Affiliation(s)
- Jun-Kun Lai
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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46
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Kortewille B, Wachs IE, Cibura N, Pfingsten O, Bacher G, Muhler M, Strunk J. Proof of Equivalent Catalytic Functionality upon Photon‐Induced and Thermal Activation of Supported Isolated Vanadia Species in Methanol Oxidation. ChemCatChem 2018. [DOI: 10.1002/cctc.201800311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bianca Kortewille
- Heterogene Photokatalyse Leibniz-Institut für Katalyse e. V. an der Universität Rostock 18059 Rostock Germany
- Lehrstuhl für Technische Chemie Ruhr-Universität Bochum 44801 Bochum Germany
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Lab Lehigh University Bethlehem PA 18015-3128 USA
| | - Niklas Cibura
- AG Nanobasierte Heterogene Katalysatoren Max-Planck-Institut für Chemische Energiekonversion 45470 Mülheim/Ruhr Germany
| | - Oliver Pfingsten
- Werkstoffe der Elektrotechnik, and Center for, Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen 47057 Duisburg Germany
| | - Gerd Bacher
- Werkstoffe der Elektrotechnik, and Center for, Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen 47057 Duisburg Germany
| | - Martin Muhler
- Lehrstuhl für Technische Chemie Ruhr-Universität Bochum 44801 Bochum Germany
| | - Jennifer Strunk
- Heterogene Photokatalyse Leibniz-Institut für Katalyse e. V. an der Universität Rostock 18059 Rostock Germany
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47
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Affiliation(s)
- Anisha Chakrabarti
- Operando Molecular Spectroscopy Laboratory,
Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy Laboratory,
Department of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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48
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Zhu M, Lai JK, Tumuluri U, Ford ME, Wu Z, Wachs IE. Reaction Pathways and Kinetics for Selective Catalytic Reduction (SCR) of Acidic NOx Emissions from Power Plants with NH3. ACS Catal 2017. [DOI: 10.1021/acscatal.7b03149] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Minghui Zhu
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Jun-Kun Lai
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Uma Tumuluri
- Chemical
Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Michael E. Ford
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Zili Wu
- Chemical
Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Israel E. Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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Zhu M, Lai JK, Tumuluri U, Wu Z, Wachs IE. Nature of Active Sites and Surface Intermediates during SCR of NO with NH₃ by Supported V₂O₅--WO₃/TiO₂ Catalysts. J Am Chem Soc 2017; 139:15624-15627. [PMID: 29059518 DOI: 10.1021/jacs.7b09646] [Citation(s) in RCA: 144] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Time-resolved in situ IR was performed during selective catalytic reduction of NO with NH3 on supported V2O5-WO3/TiO2 catalysts to examine the distribution and reactivity of surface ammonia species on Lewis and Brønsted acid sites. While both species were found to participate in the SCR reaction, their relative population depends on the coverage of the surface vanadia and tungsta sites, temperature, and moisture. Although the more abundant surface NH4+,ads intermediates dominate the overall SCR reaction, especially for hydrothermally aged catalysts, the minority surface NH3,ads intermediates exhibit a higher specific SCR activity (TOF). The current study serves to resolve the long-standing controversy about the active sites for SCR of NO with NH3 by supported V2O5-WO3/TiO2 catalysts.
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Affiliation(s)
- Minghui Zhu
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University , Bethlehem, Pennsylvania 18015, United States
| | - Jun-Kun Lai
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University , Bethlehem, Pennsylvania 18015, United States
| | - Uma Tumuluri
- Chemical Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Zili Wu
- Chemical Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Israel E Wachs
- Operando Molecular Spectroscopy & Catalysis Laboratory, Department of Chemical & Biomolecular Engineering, Lehigh University , Bethlehem, Pennsylvania 18015, United States
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Zhou W, Soultanidis N, Xu H, Wong MS, Neurock M, Kiely CJ, Wachs IE. Nature of Catalytically Active Sites in the Supported WO3/ZrO2 Solid Acid System: A Current Perspective. ACS Catal 2017. [DOI: 10.1021/acscatal.6b03697] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wu Zhou
- School
of Physical Sciences, CAS Key Laboratory of Vacuum Sciences, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
- Department
of Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Nikolaos Soultanidis
- Department of Chemical & Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Hui Xu
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Michael S. Wong
- Department of Chemical & Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Matthew Neurock
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Christopher J. Kiely
- Department
of Materials Science and Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
- Department
of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Israel E. Wachs
- Department
of Chemical and Biomolecular Engineering, Lehigh University, Bethlehem, Pennsylvania 18015, United States
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