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Change in the Nature of ZSM-5 Zeolite Depending on the Type of Metal Adsorbent-The Analysis of DOS and Orbitals for Iron Species. Int J Mol Sci 2023; 24:ijms24043374. [PMID: 36834785 PMCID: PMC9967764 DOI: 10.3390/ijms24043374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/03/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023] Open
Abstract
Transition-metal-modified zeolites have recently gained the greatest interest among scientists. Ab initio calculations within the density functional theory were used. The exchange and correlation functional was approximated with the Perdew-Burke-Ernzerhof (PBE) functional. Cluster models of ZSM-5 (Al2Si18O53H26) zeolites were used with Fe particles adsorbed above aluminum. The adsorption of three iron adsorbates inside the pores of the ZSM-5 zeolite-Fe, FeO and FeOH-was carried out with different arrangements of aluminum atoms in the zeolite structure. The DOS diagram and the HOMO, SOMO and LUMO molecular orbitals for these systems were analyzed. It has been shown that depending on the adsorbate and the position of aluminum atoms in the pore structure of the zeolite, the systems can be described as insulators or conductors, which significantly affects their activity. The main aim of the research was to understand the behavior of these types of systems in order to select the most efficient one for a catalytic reaction.
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2
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Tripodi G, Roithová J. Unmasking the Iron-Oxo Bond of the [(Ligand)Fe-OIAr] 2+/+ Complexes. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:1636-1643. [PMID: 35920859 PMCID: PMC9460779 DOI: 10.1021/jasms.2c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/26/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
ArIO (ArI = 2-(tBuSO2)C6H4I) is an oxidant used to oxidize FeII species to their FeIV-oxo state, enabling hydrogen-atom transfer (HAT) and oxygen-atom transfer (OAT) reactions at low energy barriers. ArIO, as a ligand, generates masked Fen═O species of the type Fe(n-2)-OIAr. Herein, we used gas-phase ion-molecule reactions and DFT calculations to explore the properties of masked iron-oxo species and to understand their unmasking mechanisms. The theory shows that the I-O bond cleavage in [(TPA)FeIVO(ArIO)]2+ (12+, TPA = tris(2-pyridylmethyl)amine)) is highly endothermic; therefore, it can be achieved only in collision-induced dissociation of 12+ leading to the unmasked iron(VI) dioxo complex. The reduction of 12+ by HAT leads to [(TPA)FeIIIOH(ArIO)]2+ with a reduced energy demand for the I-O bond cleavage but is, however, still endothermic. The exothermic unmasking of the Fe═O bond is predicted after one-electron reduction of 12+ or after OAT reactivity. The latter leads to the 4e- oxidation of unsaturated hydrocarbons: The initial OAT from [(TPA)FeIVO(ArIO)]2+ leads to the epoxidation of an alkene and triggers the unmasking of the second Fe═O bond still within one collisional complex. The second oxidation step starts with HAT from a C-H bond and follows with the rebound of the C-radical and the OH group. The process starting with the one-electron reduction could be studied with [(TQA)FeIVO(ArIO)]2+ (22+, TQA = tris(2-quinolylmethyl)amine)) because it has a sufficient electron affinity for electron transfer with alkenes. Accordingly, the reaction of 22+ with 2-carene leads to [(TQA)FeIIIO(ArIO)]2+ that exothermically eliminates ArI and unmasks the reactive FeV-dioxo species.
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3
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Methoxy ad-species in MFI zeotypes during methane exposure and methanol desorption followed by in situ IR spectroscopy. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.06.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Jaramillo DE, Jiang HZH, Evans HA, Chakraborty R, Furukawa H, Brown CM, Head-Gordon M, Long JR. Ambient-Temperature Hydrogen Storage via Vanadium(II)-Dihydrogen Complexation in a Metal-Organic Framework. J Am Chem Soc 2021; 143:6248-6256. [PMID: 33852299 PMCID: PMC10951977 DOI: 10.1021/jacs.1c01883] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The widespread implementation of H2 as a fuel is currently hindered by the high pressures or cryogenic temperatures required to achieve reasonable storage densities. In contrast, the realization of materials that strongly and reversibly adsorb hydrogen at ambient temperatures and moderate pressures could transform the transportation sector and expand adoption of fuel cells in other applications. To date, however, no adsorbent has been identified that exhibits a binding enthalpy within the optimal range of -15 to -25 kJ/mol for ambient-temperature hydrogen storage. Here, we report the hydrogen adsorption properties of the metal-organic framework (MOF) V2Cl2.8(btdd) (H2btdd, bis(1H-1,2,3-triazolo[4,5-b],[4',5'-i])dibenzo[1,4]dioxin), which features exposed vanadium(II) sites capable of backbonding with weak π acids. Significantly, gas adsorption data reveal that this material binds H2 with an enthalpy of -21 kJ/mol. This binding energy enables usable hydrogen capacities that exceed that of compressed storage under the same operating conditions. The Kubas-type vanadium(II)-dihydrogen complexation is characterized by a combination of techniques. From powder neutron diffraction data, a V-D2(centroid) distance of 1.966(8) Å is obtained, the shortest yet reported for a MOF. Using in situ infrared spectroscopy, the H-H stretch was identified, and it displays a red shift of 242 cm-1. Electronic structure calculations show that a main contribution to bonding stems from the interaction between the vanadium dπ and H2 σ* orbital. Ultimately, the pursuit of MOFs containing high densities of weakly π-basic metal sites may enable storage capacities under ambient conditions that far surpass those accessible with compressed gas storage.
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Affiliation(s)
- David E Jaramillo
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Henry Z H Jiang
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Hayden A Evans
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
| | - Romit Chakraborty
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Hiroyasu Furukawa
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Craig M Brown
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Martin Head-Gordon
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States
| | - Jeffrey R Long
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, California 94720, United States
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Nunthakitgoson W, Thivasasith A, Maihom T, Wattanakit C. Effects of single and double active sites of Cu oxide clusters over the MFI zeolite for direct conversion of methane to methanol: DFT calculations. Phys Chem Chem Phys 2021; 23:2500-2510. [PMID: 33465219 DOI: 10.1039/d0cp05435f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this work, we investigate the effect of various species of Cu oxide clusters including single and double active sites incorporated in the MFI zeolite framework for the direct conversion of methane to methanol. An M06-2X density functional calculation is employed to fine-tune the suitable number and species of active sites and to provide insights into the effect of the active sites on the reaction mechanism of methane to methanol. Two models, single and double active sites of Cu oxide clusters, have been chosen, in which the single active site of Cu oxide clusters, (mono(μ-oxo)dicopper(ii)), is located at the Al1'-Al12' pair ([Cu(μ-O)Cu]2+@Al1'-Al12'/MFI) or at the Al6-Al7 pair ([Cu(μ-O)Cu]2+@Al6-Al7/MFI) in the MFI framework. For the double active sites of Cu oxide clusters, two species of double active sites of Cu oxide are considered. The first one is the double active site of mono(μ-oxo)dicopper(ii) containingtwo Al-Al pairs (Al1'-Al12' and Al6-Al7 pairs) in the MFI framework (2[Cu(μ-O)Cu]2+/MFI) and the other is the double active site of trans-μ-1,2-peroxo dicopper(ii), which occupies two Al-Al pairs (Al1'-Al12' and Al6-Al7 pairs) in the MFI framework (2[Cu(μ-1,2-peroxo)Cu]2+/MFI). Furthermore, the activation energy for C-H bond dissociation in direct methane conversion to methanol is considered. Compared with the single active site of [Cu(μ-O)Cu]2+/MFI, the double active sites, in particular (2[Cu(μ-O)Cu]2+/MFI), exhibited the lowest activation energy, approximately 12.5 kcal mol-1. The high charge transfer between activated methane and Cu oxide active sites and also the high negative partial charge at the bridging oxygen of Cu oxide active sites, which directly interact with the methane molecule and abstracts its H atom, are considered as the important factors which affect the catalytic activity of Cu oxide clusters for direct methane conversion to methanol. These findings strongly support that the number and species of Cu oxide active sites incorporated in the MFI framework can highly affect the reaction mechanism of methane to methanol.
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Affiliation(s)
- Watinee Nunthakitgoson
- Department of Chemical and Biomolecular Engineering, School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.
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Hong S, Mpourmpakis G. Mechanistic understanding of methane-to-methanol conversion on graphene-stabilized single-atom iron centers. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00826a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
DFT calculations and kinetic modeling elucidate solvent effects and complex mechanisms for the room-temperature methane-to-methanol conversion on an FeN4/graphene catalyst.
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Affiliation(s)
- Sungil Hong
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA
| | - Giannis Mpourmpakis
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA
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Panov GI, Starokon EV, Ivanov DP, Pirutko LV, Kharitonov AS. Active and super active oxygen on metals in comparison with metal oxides. CATALYSIS REVIEWS 2020. [DOI: 10.1080/01614940.2020.1778389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Gennady I. Panov
- Department of heterogeneous catalysis, Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
| | - Eugeny V. Starokon
- Department of heterogeneous catalysis, Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
| | - Dmitry P. Ivanov
- Department of heterogeneous catalysis, Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
| | - Larisa V. Pirutko
- Department of heterogeneous catalysis, Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
| | - Alexandr S. Kharitonov
- Department of heterogeneous catalysis, Boreskov Institute of Catalysis, Novosibirsk, Russian Federation
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8
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Gannouni A, Michel C, Delbecq F, Zina MS, Sautet P. DFT investigations for the catalytic reaction mechanism of methane combustion occurring on Pd(ii)/Al-MCM-41. Phys Chem Chem Phys 2018; 20:25377-25386. [PMID: 30264067 DOI: 10.1039/c8cp04178d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, a theoretical analysis was carried out on the mechanism of methane combustion occurring on single site palladium oxide species [Pd]2+ supported on Al-MCM-41 silica. Single site Pd-oxo and PdO2-superoxo structures were used to represent the active centers. Activation energies for all the elementary steps involved in the oxidation of methane into formaldehyde are presented. The competition of methane/methanol substrates on active sites was examined. It was found that the formation of methanol via the reaction of methane with the superoxo species, formed via the adsorption of O2 on reduced Pd(ii) centers, facilitates the production of the very active Pd-oxo catalytic sites.
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Affiliation(s)
- Anis Gannouni
- Université de Tunis El Manar, Faculté des Sciences de Tunis, Laboratoire de Chimie des Matériaux et Catalyse, Campus Universitaire, Tunis 2092, Tunisia
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9
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Li S, Wang Y, Wu T, Schneider WF. First-Principles Analysis of Site- and Condition-Dependent Fe Speciation in SSZ-13 and Implications for Catalyst Optimization. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02107] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sichi Li
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Yujia Wang
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Tong Wu
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - William F. Schneider
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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Impeng S, Khongpracha P, Sirijaraensre J, Jansang B, Ehara M, Limtrakul J. Methane activation on Fe- and FeO-embedded graphene and boron nitride sheet: role of atomic defects in catalytic activities. RSC Adv 2015. [DOI: 10.1039/c5ra17984j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The influence of supporting materials, graphene and boron nitride sheets, on the reactivity of Fe and FeO active species have been unravelled by using a dispersion-corrected DFT (PBE-D2) method.
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Affiliation(s)
- Sarawoot Impeng
- Department of Chemical and Biomolecular Engineering
- School of Energy Science and Engineering
- Vidyasirimedhi Institute of Science and Technology
- Rayong 21210
- Thailand
| | - Pipat Khongpracha
- Department of Chemistry and NANOTEC Center for Nanoscale Materials Design for Green Nanotechnology
- Faculty of Science
- Kasetsart University
- Bangkok 10900
- Thailand
| | - Jakkapan Sirijaraensre
- Department of Chemistry and NANOTEC Center for Nanoscale Materials Design for Green Nanotechnology
- Faculty of Science
- Kasetsart University
- Bangkok 10900
- Thailand
| | - Bavornpon Jansang
- PTT Research and Technology Institute
- PTT Public Company Limited
- Ayutthaya 13170
- Thailand
| | | | - Jumras Limtrakul
- Department of Materials Science and Engineering
- School of Molecular Science and Engineering
- Vidyasirimedhi Institute of Science and Technology
- Rayong 21210
- Thailand
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11
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Impeng S, Khongpracha P, Warakulwit C, Jansang B, Sirijaraensre J, Ehara M, Limtrakul J. Direct oxidation of methane to methanol on Fe–O modified graphene. RSC Adv 2014. [DOI: 10.1039/c3ra47826b] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The reaction mechanisms of the partial oxidation of methane to methanol over FeO/graphene are unraveled using an advanced DFT approach.
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Affiliation(s)
- Sarawoot Impeng
- Department of Chemistry and NANOTEC Center for Nanoscale Materials Design for Green Nanotechnology
- Faculty of Science
- Kasetsart University
- Bangkok 10900, Thailand
- Center for Advanced Studies in Nanotechnology and Its Applications in Chemical
| | - Pipat Khongpracha
- Department of Chemistry and NANOTEC Center for Nanoscale Materials Design for Green Nanotechnology
- Faculty of Science
- Kasetsart University
- Bangkok 10900, Thailand
- Center for Advanced Studies in Nanotechnology and Its Applications in Chemical
| | - Chompunuch Warakulwit
- Department of Chemistry and NANOTEC Center for Nanoscale Materials Design for Green Nanotechnology
- Faculty of Science
- Kasetsart University
- Bangkok 10900, Thailand
- Center for Advanced Studies in Nanotechnology and Its Applications in Chemical
| | - Bavornpon Jansang
- PTT Research and Technology Institute
- PTT Public Company Limited
- Wangnoi, Thailand
| | - Jakkapan Sirijaraensre
- Department of Chemistry and NANOTEC Center for Nanoscale Materials Design for Green Nanotechnology
- Faculty of Science
- Kasetsart University
- Bangkok 10900, Thailand
- Center for Advanced Studies in Nanotechnology and Its Applications in Chemical
| | - Masahiro Ehara
- Institute for Molecular Science and Research Center for Computational Science
- Okazaki 444-8585, Japan
| | - Jumras Limtrakul
- Department of Chemistry and NANOTEC Center for Nanoscale Materials Design for Green Nanotechnology
- Faculty of Science
- Kasetsart University
- Bangkok 10900, Thailand
- Center for Advanced Studies in Nanotechnology and Its Applications in Chemical
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12
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Starokon EV, Parfenov MV, Pirutko LV, Soshnikov IE, Panov GI. Epoxidation of ethylene by anion radicals of α-oxygen on the surface of FeZSM-5 zeolite. J Catal 2014. [DOI: 10.1016/j.jcat.2013.11.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Fellah MF, Onal I. A DFT study on the [VO]1+-ZSM-5 cluster: direct methanol oxidation to formaldehyde by N2O. Phys Chem Chem Phys 2013; 15:13969-77. [PMID: 23852338 DOI: 10.1039/c3cp51637g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism of direct oxidation of methanol to formaldehyde by N2O has been theoretically investigated by means of density functional theory over an extra framework species in ZSM-5 zeolite represented by a [(SiH3)4AlO4](1-)[V-O](1+) cluster model. The catalytic reactivity of these species is compared with that of mononuclear (Fe-O)(1+) sites in ZSM-5 investigated in our earlier work at the same level of theory (J. Catal. 2011, 282, 191). The [V-O](1+) site in ZSM-5 zeolite shows an enhanced catalytic activity for the reaction. The calculated vibrational frequencies for grafted species on vanadium sites on the surface are in good agreement with the experimental values. According to the theoretical results obtained in this study the [V-O](1+) site in the ZSM-5 catalyst has an important role in the direct catalytic oxidation of methanol to formaldehyde by N2O.
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Affiliation(s)
- Mehmet Ferdi Fellah
- Department of Chemical Engineering, Bursa Technical University, Bursa, Turkey.
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14
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Starokon EV, Parfenov MV, Arzumanov SS, Pirutko LV, Stepanov AG, Panov GI. Oxidation of methane to methanol on the surface of FeZSM-5 zeolite. J Catal 2013. [DOI: 10.1016/j.jcat.2012.12.030] [Citation(s) in RCA: 129] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Bordiga S, Groppo E, Agostini G, van Bokhoven JA, Lamberti C. Reactivity of Surface Species in Heterogeneous Catalysts Probed by In Situ X-ray Absorption Techniques. Chem Rev 2013; 113:1736-850. [DOI: 10.1021/cr2000898] [Citation(s) in RCA: 488] [Impact Index Per Article: 44.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Silvia Bordiga
- Department of Chemistry and NIS Centre of Excellence, Università di Torino and INSTM Reference Center, Via P. Giuria 7, 10125 Torino, Italy
| | - Elena Groppo
- Department of Chemistry and NIS Centre of Excellence, Università di Torino and INSTM Reference Center, Via P. Giuria 7, 10125 Torino, Italy
| | - Giovanni Agostini
- Department of Chemistry and NIS Centre of Excellence, Università di Torino and INSTM Reference Center, Via P. Giuria 7, 10125 Torino, Italy
| | - Jeroen A. van Bokhoven
- ETH Zurich, Institute for Chemical and Bioengineering, HCI E127 8093 Zurich, Switzerland
- Laboratory for Catalysis and Sustainable Chemistry (LSK) Swiss Light Source, Paul Scherrer Instituteaul Scherrer Institute, Villigen, Switzerland
| | - Carlo Lamberti
- Department of Chemistry and NIS Centre of Excellence, Università di Torino and INSTM Reference Center, Via P. Giuria 7, 10125 Torino, Italy
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16
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Structures and mechanisms of the dehydration of benzaldoxime over Fe-ZSM-5 zeolites: a DFT study. Struct Chem 2012. [DOI: 10.1007/s11224-012-0161-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Dietl N, Schlangen M, Schwarz H. Thermal Hydrogen-Atom Transfer from Methane: The Role of Radicals and Spin States in Oxo-Cluster Chemistry. Angew Chem Int Ed Engl 2012; 51:5544-55. [DOI: 10.1002/anie.201108363] [Citation(s) in RCA: 347] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Indexed: 11/11/2022]
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18
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Dietl N, Schlangen M, Schwarz H. Thermische Wasserstoffabstraktion aus Methan - zur Rolle von Radikalen und Spinzuständen in der Chemie von Oxoclustern. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108363] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Alayon EM, Nachtegaal M, Ranocchiari M, van Bokhoven JA. Catalytic conversion of methane to methanol over Cu–mordenite. Chem Commun (Camb) 2012; 48:404-6. [DOI: 10.1039/c1cc15840f] [Citation(s) in RCA: 161] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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20
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Stability and reactivity of active sites for direct benzene oxidation to phenol in Fe/ZSM-5: A comprehensive periodic DFT study. J Catal 2011. [DOI: 10.1016/j.jcat.2011.07.008] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Fellah MF. Direct oxidation of methanol to formaldehyde by N2O on [Fe]1+ and [FeO]1+ sites in Fe–ZSM-5 zeolite: A density functional theory study. J Catal 2011. [DOI: 10.1016/j.jcat.2011.06.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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22
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Roithová J, Schröder D. Selective activation of alkanes by gas-phase metal ions. Chem Rev 2010; 110:1170-211. [PMID: 20041696 DOI: 10.1021/cr900183p] [Citation(s) in RCA: 377] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jana Roithová
- Department of Organic Chemistry, Charles University in Prague, Faculty of Sciences, Hlavova 8, 12843 Prague 2, Czech Republic.
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23
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Rosa A, Ricciardi G, Baerends EJ. Is [FeO]2+ the Active Center Also in Iron Containing Zeolites? A Density Functional Theory Study of Methane Hydroxylation Catalysis by Fe-ZSM-5 Zeolite. Inorg Chem 2010; 49:3866-80. [DOI: 10.1021/ic1000073] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Angela Rosa
- Dipartimento di Chimica, Università della Basilica, Via N. Sauro 85, 85100 Potenza, Italy
| | - Giampaolo Ricciardi
- Dipartimento di Chimica, Università della Basilica, Via N. Sauro 85, 85100 Potenza, Italy
| | - Evert Jan Baerends
- Dep. of Chemistry, Pohang Univ. of Science and Technology, Pohang 790-784, South-Korea
- Theoretische Chemie, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
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Kirillova M, Kuznetsov M, da Silva J, Guedes da Silva M, Fraústo da Silva J, Pombeiro A. Amavadin and Other Vanadium Complexes as Remarkably Efficient Catalysts for One-Pot Conversion of Ethane to Propionic and Acetic Acids. Chemistry 2008; 14:1828-42. [DOI: 10.1002/chem.200700980] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Hu X, Li H. All-Metal Aromatic Complexes Show High Reactivity in the Oxidation Reaction of Methane and Some Hydrocarbons. J Phys Chem A 2007; 111:8352-6. [PMID: 17683124 DOI: 10.1021/jp0718552] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The C-H activations of methane, ethane, propane, and propene catalyzed by all-metal aromatic complexes Al(4)Fe were investigated. The results reveal that the rate-determining barrier of methane activation reaction with Al(4)Fe is lower than that of both some well-known inorganic catalysts and some metal organic catalysts. It was found that the all-metal aromatic complexes have high reactivity for the C-H activation of ethane, propane, and propene. Further research showed that the ability of all-metal aromatic complex to accept an electron and the degree of electron delocalization on its aromatic plane had obvious influences on the reactivity of Al(4)Fe. The present work predicts a new kind of catalyst for the alkyl C-H activation reaction: all-metal aromatic catalyst.
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Affiliation(s)
- Xingbang Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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Kirillova MV, Kuznetsov ML, Reis PM, da Silva JAL, da Silva JJRF, Pombeiro AJL. Direct and Remarkably Efficient Conversion of Methane into Acetic Acid Catalyzed by Amavadine and Related Vanadium Complexes. A Synthetic and a Theoretical DFT Mechanistic Study. J Am Chem Soc 2007; 129:10531-45. [PMID: 17676842 DOI: 10.1021/ja072531u] [Citation(s) in RCA: 131] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Vanadium(IV or V) complexes with N,O- or O,O-ligands, i.e., [VO{N(CH2CH2O)3}], Ca[V(HIDPA)2] (synthetic amavadine), Ca[V(HIDA)2], or [Bu4N]2[V(HIDA)2] [HIDPA, HIDA = basic form of 2,2'-(hydroxyimino)dipropionic or -diacetic acid, respectively], [VO(CF3SO3)2], Ba[VO(nta)(H2O)]2 (nta = nitrilotriacetate), [VO(ada)(H2O)] (ada = N-2-acetamidoiminodiacetate), [VO(Hheida)(H2O)] (Hheida = 2-hydroxyethyliminodiacetate), [VO(bicine)] [bicine = basic form of N,N-bis(2-hydroxyethyl)glycine], and [VO(dipic)(OCH2CH3)] (dipic = pyridine-2,6-dicarboxylate), are catalyst precursors for the efficient single-pot conversion of methane into acetic acid, in trifluoroacetic acid (TFA) under moderate conditions, using peroxodisulfate as oxidant. Effects on the yields and TONs of various factors are reported. TFA acts as a carbonylating agent and CO is an inhibitor for some systems, although for others there is an optimum CO pressure. The most effective catalysts (as amavadine) bear triethanolaminate or (hydroxyimino)dicarboxylates and lead, in a single batch, to CH3COOH yields > 50% (based on CH4) or remarkably high TONs up to 5.6 x 103. The catalyst can remain active upon multiple recycling of its solution. Carboxylation proceeds via free radical mechanisms (CH3* can be trapped by CBrCl3), and theoretical calculations disclose a particularly favorable process involving the sequential formation of CH3*, CH3CO*, and CH3COO* which, upon H-abstraction (from TFA or CH4), yields acetic acid. The CH3COO* radical is formed by oxygenation of CH3CO* by a peroxo-V complex via a V{eta1-OOC(O)CH3} intermediate. Less favorable processes involve the oxidation of CH3CO* by the protonated (hydroperoxo) form of that peroxo-V complex or by peroxodisulfate. The calculations also indicate that (i) peroxodisulfate behaves as a source of sulfate radicals which are methane H-abstractors, as a peroxidative and oxidizing agent for vanadium, and as an oxidizing and coupling agent for CH3CO* and that (ii) TFA is involved in the formation of CH3COOH (by carbonylating CH3*, acting as an H-source to CH3COO*, and enhancing on protonation the oxidizing power of a peroxo-VV complex) and of CF3COOCH3 (minor product in the absence of CO).
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Affiliation(s)
- Marina V Kirillova
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, TU Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
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Benoit DM. Efficient correlation-corrected vibrational self-consistent field computation of OH-stretch frequencies using a low-scaling algorithm. J Chem Phys 2006; 125:244110. [PMID: 17199343 DOI: 10.1063/1.2423006] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The authors present a new computational scheme to perform accurate and fast direct correlation-corrected vibrational self-consistent field (CC-VSCF) computations for a selected number of vibrational modes, which is aimed at predicting a few vibrations in large molecular systems. The method is based on a systematic selection of vibrational mode-mode coupling terms, leading to the direct ab initio construction of a sparse potential energy surface. The computational scaling of the CC-VSCF computation on the generated surface is then further reduced by using a screening procedure for the correlation-correction contributions. The proposed method is applied to the computation of the OH-stretch frequency of five aliphatic alcohols. The authors investigate the influence of different pseudopotential and all-electron basis sets on the quality of the correlated potential energy surfaces computed and on the OH-stretch frequencies calculated for each surface. With the help of these test systems, the authors show that their method offers a computational scaling that is two orders of magnitude lower than a standard CC-VSCF method and that it is of equal accuracy.
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Affiliation(s)
- David M Benoit
- Nachwuchsgruppe Theorie-SFB 569, Albert-Einstein-Allee 11, University of Ulm, D-89081 Ulm, Germany.
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Hu X, Li H, Wang C. The Reactivity of All-Metal Aromatic Complexes: A Theoretical Investigation on the Methane Activation Reaction. J Phys Chem B 2006; 110:14046-9. [PMID: 16854098 DOI: 10.1021/jp063417l] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The recent finding of all-metal aromaticity enlightens us to explore the reactivity of all-metal aromatic complexes. The methane activation reaction was chosen for this purpose. The whole catalysis process of all-metal aromatics was investigated by theoretical calculation. The results reveal that the reaction barriers with all-metal aromatic complexes are far lower than that without any catalysts. All-metal aromatic complexes are predicted to have potential to be used as catalysts for the first time.
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Affiliation(s)
- Xingbang Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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Shiota Y, Suzuki K, Yoshizawa K. QM/MM Study on the Catalytic Mechanism of Benzene Hydroxylation over Fe−ZSM-5. Organometallics 2006. [DOI: 10.1021/om0509591] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yoshihito Shiota
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 812-8581, Japan
| | - Kunihiko Suzuki
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 812-8581, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 812-8581, Japan
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Pabchanda S, Pantu P, Limtrakul J. Hydrolysis of methoxide species and regeneration of active site in Fe-ZSM-5 catalyst by the ONIOM method. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.molcata.2005.05.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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