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Uko L, Elkady M. Biohybrid microcapsules based on electrosprayed CS-immobilized nanoZrV for self-healing epoxy coating development. RSC Adv 2024; 14:18467-18477. [PMID: 38860245 PMCID: PMC11163269 DOI: 10.1039/d4ra02289k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 06/03/2024] [Indexed: 06/12/2024] Open
Abstract
In this work, zirconium vanadate nanoparticles were immobilized into chitosan using a facile electrospraying technique to produce CS-ZrV hybrid microcapsules for the development of a self-healing coating. Upon assessment, hybrid microcapsules possessed desirable properties with a mean particle size of 319 μm, maintaining good thermal stability of ∼55% at 700 °C, and were subsequently incorporated into an epoxy resin to develop a biocompatible self-healing coating, CZVEx, for carbon steel corrosion protection. Scratched samples of self-healing and control coatings were analyzed in a corrosion medium of 3.5 wt% aqueous NaCl. SEM images of the scratched coating sample, after days of immersion, revealed healing of defects through the appearance of an epoxide gel-like substance due to the release of polymeric vanadate that reacted with corrosion agents, resulting in polymerization of vanadium hydrates and subsequent self-healing, validated by the proposed mechanism of self-healing. Electrochemical impedance spectroscopy analysis further confirmed CZVEx coating possessed excellent self-healing capabilities through a significant impedance rise from 4.48 × 105 to 5.52 × 105 (ohm cm2) between the 7th and 14th day of immersion. Furthermore, comparative polarization assessment of coating samples with/without defects indicated the accuracy of EIS for self-healing analysis, and showed the sample with no defect was only 2.6 times more corrosion resistant than the scratched coating, as against bare steel substrate that was 22 times less resistant, revealing superior self-healing anticorrosion properties of the coating.
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Affiliation(s)
- Lydia Uko
- Chemical and Petrochemicals Engineering Department, Egypt-Japan University of Science and Technology Alexandria 21934 Egypt
| | - Marwa Elkady
- Fabrication Technology Department, Advanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technology Applications Alexandria 21934 Egypt
- Chemical and Petrochemicals Engineering Department, Egypt-Japan University of Science and Technology Alexandria 21934 Egypt
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2
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Raabe JC, Poller MJ, Voß D, Albert J. H 8 [PV 5 Mo 7 O 40 ] - A Unique Polyoxometalate for Acid and RedOx Catalysis: Synthesis, Characterization, and Modern Applications in Green Chemical Processes. CHEMSUSCHEM 2023; 16:e202300072. [PMID: 37129162 DOI: 10.1002/cssc.202300072] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/03/2023]
Abstract
Polyoxometalates (POMs) are a fascinating group of anionic metal-oxide clusters with a broad variety of structural properties and several catalytic applications, especially in the conversion of bio-derived platform chemicals. H8 [PV5 Mo7 O40 ] (HPA-5) is a unique POM catalyst that ideally links numerous fascinating research fields for the following reasons: a) HPA-5 can be synthesized by rational design approaches; b) HPA-5 can be well characterized using multiple analytical tools explaining its catalytic properties; and c) HPA-5 is suitable for multiple important catalytic transformations of bio-based feedstock. This Review combines the fields of synthesis, spectroscopic, electrochemical, and crystallographic characterization of HPA-5 with those of sustainable catalysis and green chemistry. Selected catalytic applications include esterification, dehydration, and delignification of biomass as well as selective oxidation and fractionation of bio-based feedstock. The unique HPA-5 is a fascinating POM that has a broad application scope for biomass valorization.
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Affiliation(s)
- Jan-Christian Raabe
- Institute of Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstr. 45, 20146, Hamburg, Germany
| | - Maximilian J Poller
- Institute of Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstr. 45, 20146, Hamburg, Germany
| | - Dorothea Voß
- Institute of Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstr. 45, 20146, Hamburg, Germany
| | - Jakob Albert
- Institute of Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstr. 45, 20146, Hamburg, Germany
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3
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Raabe JC, Aceituno Cruz J, Albert J, Poller MJ. Comparative Spectroscopic and Electrochemical Study of V(V)-Substituted Keggin-Type Phosphomolybdates and -Tungstates. INORGANICS 2023. [DOI: 10.3390/inorganics11040138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Vanadium-substituted Keggin-type heteropolyanions have been studied for a wide variety of applications, ranging from catalysis to antiviral/antimicrobial agents. While the V-substituted phosphomolybdates [PVxMo12−xO40](3+x)− have been well investigated in this context, comparatively little is known about the corresponding phosphotungstates [PVxW12-xO40](3+x)−. We have succeeded in synthesizing the sodium salts of the whole series [PVxW12−xO40](3+x)−, for x = 1 to 6, and characterised them spectroscopically (FT-IR, UV-Vis, 31P-, and 51V-NMR) and electrochemically (CV and SWV). Thereby, direct comparisons between the vanadium-substituted phosphomolybdates and -tungstates, with substitution degrees from 1 to 6, can be established, which provides a solid basis for further investigations of potential applications.
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Affiliation(s)
- Jan-Christian Raabe
- Institute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, Germany
| | - José Aceituno Cruz
- Institute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, Germany
| | - Jakob Albert
- Institute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, Germany
| | - Maximilian J. Poller
- Institute for Technical and Macromolecular Chemistry, Universität Hamburg, Bundesstraße 45, 20146 Hamburg, Germany
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4
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Raabe J, Albert J, Poller MJ. Spectroscopic, Crystallographic, and Electrochemical Study of Different Manganese(II)‐Substituted Keggin‐Type Phosphomolybdates. Chemistry 2022; 28:e202201084. [PMID: 35731027 PMCID: PMC9546069 DOI: 10.1002/chem.202201084] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Indexed: 11/23/2022]
Abstract
Adjusting the RedOx activity of polyoxometalate catalysts is a key challenge for the catalysis of selective oxidation reactions. For this purpose, the possibility of influencing the RedOx potential by the introduction of an additional RedOx‐active element was investigated. Thereby, Keggin‐type polyoxometalates (POMs) with up to three different elements in the metal framework were created. An advanced and reproducible synthetic procedure to incorporate MnII and additionally VV into Keggin‐type heteropolyacids alongside comprehensive characterization of the new molecules is presented. The success of our syntheses was confirmed by vibrational spectroscopy (IR and Raman) and elemental analysis. Furthermore, the new compounds were analyzed by NMR spectroscopy to investigate the characteristics of the POMs in solution. The structures of successfully crystalized compounds were determined by single‐crystal X‐ray diffraction. Moreover, all synthesized compounds were characterized using UV/Vis spectroscopy and electrochemical analysis to get further insights into the electronic transfer processes and redox potentials.
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Affiliation(s)
- Jan‐Christian Raabe
- Institute of Technical and Macromolecular Chemistry Hamburg University Bundesstrasse 45 20146 Hamburg Germany
| | - Jakob Albert
- Institute of Technical and Macromolecular Chemistry Hamburg University Bundesstrasse 45 20146 Hamburg Germany
| | - Maximilian J. Poller
- Institute of Technical and Macromolecular Chemistry Hamburg University Bundesstrasse 45 20146 Hamburg Germany
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5
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He H, Zheng M, Liu Q, Liu J, Zhao J, Zhuang Y, Liu X, Xu Q, Kirk SR, Yin D. Hydroxyl-assisted selective epoxidation of perillyl alcohol with hydrogen peroxide by vanadium-substituted phosphotungstic acid hinged on imidazolyl activated carbon. NEW J CHEM 2022. [DOI: 10.1039/d2nj00040g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Vanadium-substituted phosphotungstic acid hinged on imidazolyl activated carbon catalyzed efficiently and stably the selective epoxidation of perillyl alcohol with H2O2.
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Affiliation(s)
- Huiting He
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
| | - Min Zheng
- College of Physics and Chemistry, Hunan First Normal University, Changsha 410205, China
- College of Material Science & Engineering, Central South University of Forestry and Technology, Changsha 410004, China
| | - Qiang Liu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
| | - Jian Liu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
| | - Juan Zhao
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
| | - Yuting Zhuang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
| | - Xianxiang Liu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
| | - Qiong Xu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
| | - Steven R. Kirk
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
| | - Dulin Yin
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University Changsha, 410081, China
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6
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Zhou Q, Xu B, Tang X, Dai S, Ding B, Li D, Zheng A, Zhang T, Yao Y, Gong X, Hou Z. Role of Organic Fluoride Salts in Stabilizing Niobium Oxo-Clusters Catalyzing Epoxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8190-8203. [PMID: 34184530 DOI: 10.1021/acs.langmuir.1c00893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We present here that easily available organic salts can stabilize/modify niobium (Nb) oxo-clusters. The as-synthesized Nb oxo-clusters have been characterized by various methods. These Nb oxo-clusters were catalytically active for the epoxidation of allylic alcohols and olefins with H2O2 as an oxidant. Notably, Nb-OC@TBAF-0.5 appeared as highly dispersed nanosized particles and showed the highest catalytic activity, which can be attributed to the following reasons on the basis of characterization. First, the strong coordination of fluorine ions with Nb sites and the steric protection with bulky organic cations led to high stabilization and dispersion of the oxo-clusters in the course of the reaction. Second, a hydrogen-bond interaction between the coordinated fluorine atom and the -OH group of allylic alcohol favored the epoxidation reaction. Third, the electron density of Nb sites decreased due to the strong electron-withdrawing ability of F- adjacent to Nb sites, thus promoting the electrophilic oxygen transfer to the C═C bond.
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Affiliation(s)
- Qingqing Zhou
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Beibei Xu
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China
| | - Xuan Tang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, 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, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bingjie Ding
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Difan Li
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Anna Zheng
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Tong Zhang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Yefeng Yao
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China
| | - Xueqing Gong
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Zhenshan Hou
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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7
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Ayla EZ, Potts DS, Bregante DT, Flaherty DW. Alkene Epoxidations with H2O2 over Groups 4–6 Metal-Substituted BEA Zeolites: Reactive Intermediates, Reaction Pathways, and Linear Free-Energy Relationships. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03394] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- E. Zeynep Ayla
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - David S. Potts
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Daniel T. Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - David W. Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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8
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Saikia G, Ahmed K, Rajkhowa C, Sharma M, Talukdar H, Islam NS. Polymer immobilized tantalum( v)–amino acid complexes as selective and recyclable heterogeneous catalysts for oxidation of olefins and sulfides with aqueous H 2O 2. NEW J CHEM 2019. [DOI: 10.1039/c9nj04180j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer supported peroxotantalate based heterogeneous catalysts served as highly efficient, selective and recyclable catalysts for alkene epoxidation and sulfide oxidation with green oxidant aqueous H2O2 under mild reaction conditions.
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Affiliation(s)
- Gangutri Saikia
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | - Kabirun Ahmed
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | | | - Mitu Sharma
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | - Hiya Talukdar
- Dept. of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
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9
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Bregante DT, Thornburg NE, Notestein JM, Flaherty DW. Consequences of Confinement for Alkene Epoxidation with Hydrogen Peroxide on Highly Dispersed Group 4 and 5 Metal Oxide Catalysts. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03986] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel T. Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Nicholas E. Thornburg
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Justin M. Notestein
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - David W. Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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10
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Zerrouki M, Boudjema S, Choukchou-Braham A, Rekkab-Hammoumraoui I. Synthesis, characterization and optimization of heterogeneous catalytic cyclohexene oxidation by tungstophospho(aqua)ruthenate via the fractional factorial design methodology. NEW J CHEM 2018. [DOI: 10.1039/c8nj02690d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Keggin-type tungstophospho(aqua)ruthenate (PRuW) was synthesized and supported on acid activated montmorillonite under mild conditions.
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Affiliation(s)
- Mostapha Zerrouki
- Laboratoire de Catalyse et Synthèse en Chimie Organique
- Faculté des Sciences
- Université de Tlemcen
- Algeria
| | - Souheyla Boudjema
- Laboratoire de Catalyse et Synthèse en Chimie Organique
- Faculté des Sciences
- Université de Tlemcen
- Algeria
- Département de Forage et Mécanique des Chantiers Pétroliers
| | | | - Ilhem Rekkab-Hammoumraoui
- Laboratoire de Catalyse et Synthèse en Chimie Organique
- Faculté des Sciences
- Université de Tlemcen
- Algeria
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11
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Boudjema S, Zerrouki M, Choukchou-Braham A. Experimental Design for Modeling and Multi-response Optimization of Catalytic Cyclohexene Epoxidation over Polyoxometalates. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700291] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Souheyla Boudjema
- Laboratory of Catalysis and Synthesis in Organic Chemistry (LCSCO); University of Tlemcen, BP 119 Imama; 13000 Tlemcen Algeria
- Faculty of Hydrocarbons, Renewable Energy, Earth Sciences and Universe; Kasdi Merbah University; Ouargla Algeria
| | - Mostapha Zerrouki
- Laboratory of Catalysis and Synthesis in Organic Chemistry (LCSCO); University of Tlemcen, BP 119 Imama; 13000 Tlemcen Algeria
| | - Abderrahim Choukchou-Braham
- Laboratory of Catalysis and Synthesis in Organic Chemistry (LCSCO); University of Tlemcen, BP 119 Imama; 13000 Tlemcen Algeria
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12
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Zhang L, Li S, Zhang Z, Tan L, Pang H, Ma H. Facile fabrication of reduced graphene oxide and Keggin-type polyoxometalates nanocomposite film for high performance electrocatalytic oxidation of nitrite. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.11.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Bregante DT, Flaherty DW. Periodic Trends in Olefin Epoxidation over Group IV and V Framework-Substituted Zeolite Catalysts: A Kinetic and Spectroscopic Study. J Am Chem Soc 2017; 139:6888-6898. [PMID: 28453262 DOI: 10.1021/jacs.7b01422] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Group IV and V framework-substituted zeolites have been used for olefin epoxidation reactions for decades, yet the underlying properties that determine the selectivities and turnover rates of these catalysts have not yet been elucidated. Here, a combination of kinetic, thermodynamic, and in situ spectroscopic measurements show that when group IV (i.e., Ti, Zr, and Hf) or V (i.e., Nb and Ta) transition metals are substituted into zeolite *BEA, the metals that form stronger Lewis acids give greater selectivities and rates for the desired epoxidation pathway and present smaller enthalpic barriers for both epoxidation and H2O2 decomposition reactions. In situ UV-vis spectroscopy shows that these group IV and V materials activate H2O2 to form pools of hydroperoxide, peroxide, and superoxide intermediates. Time-resolved UV-vis measurements and the isomeric distributions of Z-stilbene epoxidation products demonstrate that the active species for epoxidations on group IV and V transition metals are only M-OOH/-(O2)2- and M-(O2)- species, respectively. Mechanistic interpretations of kinetic data suggest that these group IV and V materials catalyze cyclohexene epoxidation and H2O2 decomposition through largely identical Eley-Rideal mechanisms that involve the irreversible activation of coordinated H2O2 followed by reaction with an olefin or H2O2. Epoxidation rates and selectivities vary over five- and two-orders of magnitude, respectively, among these catalysts and depend exponentially on the energy for ligand-to-metal charge transfer (LMCT) and the functional Lewis acid strength of the metal centers. Together, these observations show that more electrophilic active-oxygen species (i.e., lower-energy LMCT) are more reactive and selective for epoxidations of electron-rich olefins and explain why Ti-based catalysts have been identified as the most active among early transition metals for these reactions. Further, H2O2 decomposition (the undesirable reaction pathway) possesses a weaker dependence on Lewis acidity than epoxidation, which suggests that the design of catalysts with increased Lewis acid strength will simultaneously increase the reactivity and selectivity of olefin epoxidation.
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Affiliation(s)
- Daniel T Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - David W Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
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14
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Bregante DT, Priyadarshini P, Flaherty DW. Kinetic and spectroscopic evidence for reaction pathways and intermediates for olefin epoxidation on Nb in *BEA. J Catal 2017. [DOI: 10.1016/j.jcat.2017.02.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Tong J, Su L, Li W, Wang W, Ma H, Wang Q. Hybrids of [C4mim]3+PMo12−V O40: A new catalyst for oxidation of benzyl alcohol to benzaldehyde in water with greatly improved performances. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.05.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Zhou L, Wang L, Zhang S, Yan R, Diao Y. Effect of vanadyl species in Keggin-type heteropoly catalysts in selective oxidation of methacrolein to methacrylic acid. J Catal 2015. [DOI: 10.1016/j.jcat.2015.05.031] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Pyridoxal based ONS and ONO vanadium(V) complexes: Structural analysis and catalytic application in organic solvent free epoxidation. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.03.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Assady E, Yadollahi B, Riahi Farsani M, Moghadam M. Zinc polyoxometalate on activated carbon: an efficient catalyst for selective oxidation of alcohols with hydrogen peroxide. Appl Organomet Chem 2015. [DOI: 10.1002/aoc.3332] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Elham Assady
- Department of Chemistry; University of Isfahan; Isfahan 81746-73441 Iran
| | - Bahram Yadollahi
- Department of Chemistry; University of Isfahan; Isfahan 81746-73441 Iran
| | - Mostafa Riahi Farsani
- Young Researchers and Elite Club; Islamic Azad University; Shahrekord Branch Shahrekord Iran
| | - Majid Moghadam
- Department of Chemistry; University of Isfahan; Isfahan 81746-73441 Iran
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19
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Yue L, Wang L, Shi F, Guo J, Yang J, Lian J, Luo X. Application of response surface methodology to the decolorization by the electrochemical process using FePMo 12 O 40 catalyst. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Boudjema S, Vispe E, Choukchou-Braham A, Mayoral JA, Bachir R, Fraile JM. Preparation and characterization of activated montmorillonite clay supported 11-molybdo-vanado-phosphoric acid for cyclohexene oxidation. RSC Adv 2015. [DOI: 10.1039/c4ra13604g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Heterogenization of homogenous catalysts consisting of vanadium substituted polyphosphomolybdate with Keggin structure supported on activated bentonite for epoxidation of cyclohexene.
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Affiliation(s)
- S. Boudjema
- Laboratoire de Catalyse et Synthèse en Chimie Organique
- Faculté des Sciences
- Université de Tlemcen
- Algeria
| | - E. Vispe
- Departamento de Química Orgánica
- Instituto de Síntesis Química y Catálisis Homogénea
- Facultad de Ciencias
- Universidad de Zaragoza-CSIC
- E-50009 Zaragoza
| | - A. Choukchou-Braham
- Laboratoire de Catalyse et Synthèse en Chimie Organique
- Faculté des Sciences
- Université de Tlemcen
- Algeria
| | - J. A. Mayoral
- Departamento de Química Orgánica
- Instituto de Síntesis Química y Catálisis Homogénea
- Facultad de Ciencias
- Universidad de Zaragoza-CSIC
- E-50009 Zaragoza
| | - R. Bachir
- Laboratoire de Catalyse et Synthèse en Chimie Organique
- Faculté des Sciences
- Université de Tlemcen
- Algeria
| | - J. M. Fraile
- Departamento de Química Orgánica
- Instituto de Síntesis Química y Catálisis Homogénea
- Facultad de Ciencias
- Universidad de Zaragoza-CSIC
- E-50009 Zaragoza
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21
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Oxidation of Cyclohexene over Mesoporous Silica Pillared Clay Incorporated with Heteropoly Acid Prepared by Sol Gel Method. ACTA ACUST UNITED AC 2014. [DOI: 10.4028/www.scientific.net/amr.1064.71] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous silica pillared clay (SPC) materials with different contents of H4PMo11VO40 (PVMo) heteropoly acid were synthesized by introducingPVMo into clay interlayer template in an acidic suspension using sol–gel method. The results of the characterizations showed that PVMo was dispersed homogeneously in the encapsulated samples. The encapsulated materials exhibited good catalytic performance in oxidation of cyclohexene.
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22
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Huber S, Cokoja M, Kühn FE. Historical landmarks of the application of molecular transition metal catalysts for olefin epoxidation. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.07.016] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Pathan S, Patel A. Transition-Metal-Substituted Phosphomolybdates: Catalytic and Kinetic Study for Liquid-Phase Oxidation of Styrene. Ind Eng Chem Res 2013. [DOI: 10.1021/ie400797u] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Soyeb Pathan
- Polyoxometalates
and Catalysis Laboratory, Department of Chemistry, Faculty of Science, The M. S. University of Baroda, Vadodara, 390 002 Gujarat, India
| | - Anjali Patel
- Polyoxometalates
and Catalysis Laboratory, Department of Chemistry, Faculty of Science, The M. S. University of Baroda, Vadodara, 390 002 Gujarat, India
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24
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Conte V, Coletti A, Floris B, Licini G, Zonta C. Mechanistic aspects of vanadium catalysed oxidations with peroxides. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.03.006] [Citation(s) in RCA: 149] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Biswas AN, Das P, Kandar SK, Agarwala A, Bandyopadhyay D, Bandyopadhyay P. Chiral Mn(III) salen catalyzed oxidation of hydrocarbons. TRANSIT METAL CHEM 2010. [DOI: 10.1007/s11243-010-9359-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Adão P, Costa Pessoa J, Henriques RT, Kuznetsov ML, Avecilla F, Maurya MR, Kumar U, Correia I. Synthesis, Characterization, and Application of Vanadium−Salan Complexes in Oxygen Transfer Reactions. Inorg Chem 2009; 48:3542-61. [DOI: 10.1021/ic8017985] [Citation(s) in RCA: 166] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pedro Adão
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - João Costa Pessoa
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Rui T. Henriques
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Maxim L. Kuznetsov
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Fernando Avecilla
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Mannar R. Maurya
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Umesh Kumar
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
| | - Isabel Correia
- Centro de Química Estrutural, Instituto Superior Técnico, TU Lisbon, Av. Rovísco Pais, 1049-001 Lisboa, Portugal, Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain, and Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
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Kuznetsov ML, Pessoa JC. Epoxidation of olefins catalysed by vanadium–salan complexes: a theoretical mechanistic study. Dalton Trans 2009:5460-8. [DOI: 10.1039/b902424g] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Lacunary Keggin type polyoxotungstates in conjunction with a phase transfer catalyst: An effective catalyst system for epoxidation of alkenes with aqueous H2O2. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2008.07.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Komintarachat C, Trakarnpruk W. Oxidative Desulfurization Using Polyoxometalates. Ind Eng Chem Res 2006. [DOI: 10.1021/ie051199x] [Citation(s) in RCA: 156] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C. Komintarachat
- Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - W. Trakarnpruk
- Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
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