1
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Kumar S, Singh D, Rit A. Cooperativity between metal centers in homobimetallic Pd II-NHC complexes: catalytic potential towards hydrodefluorination. Chem Commun (Camb) 2024; 60:7761-7764. [PMID: 38973622 DOI: 10.1039/d4cc02185a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Among the several unsymmetrical bis-NHC derived distinct homo-bimetallic and mono-NHC supported PdII complexes studied here (1-5), the bimetallic complex 1 was noted to be the most effective catalyst for the challenging hydrodefluorination. The electron richness of the metal centers and the synergistic cooperation between the PdII centers (cooperativity index, ɑ = 8.67) have been recognized to be the deciding factor for its better activity.
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Affiliation(s)
- Shashi Kumar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Dushyant Singh
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
| | - Arnab Rit
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India.
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2
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An S, Ji H, Park J, Choi Y, Choe JK. Influence of chemical structures on reduction rates and defluorination of fluoroarenes during catalytic reduction using a rhodium-based catalyst. CHEMOSPHERE 2024; 362:142755. [PMID: 38969226 DOI: 10.1016/j.chemosphere.2024.142755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/29/2024] [Accepted: 07/01/2024] [Indexed: 07/07/2024]
Abstract
Continuous growth in fluoroarene production has led to environmental pollution and health concerns owing to their persistence, which is attributed to the stable C-F bond in their structures. Herein, we investigated fluoroarene decomposition via hydrodefluorination using a rhodium-based catalyst, focusing on the effects of the chemical structure and functional group on the defluorination yield. Most compounds, except (pentafluoroethyl)benzene, exhibited full or partial reduction with pseudo-first-order rate constants in the range of 0.002-0.396 min-1 and defluorination yields of 0%-100%. Fluoroarenes with hydroxyl, methyl, and carboxylate groups were selected to elucidate how hydrocarbon and oxygen-containing functional groups influence the reaction rate and defluorination. Inhibition of the reaction rate and defluorination yield based on functional groups increased in the order of hydroxyl < methyl < carboxylate, which was identical to the order of the electron-withdrawing effect. Fluoroarenes with polyfluoro groups were also assessed; polyfluoro groups demonstrated a different influence on catalyst activity than non-fluorine functional groups because of fluorine atoms in the substituents undergoing defluorination. The reaction kinetics of (difluoromethyl)fluorobenzenes and their intermediates suggested that hydrogenation and defluorination occurred during degradation. Finally, the effects of the type and position of functional groups on the reaction rate and defluorination yield were investigated via multivariable linear regression analysis. Notably, the electron-withdrawing nature of functional groups appeared to have a greater impact on the defluorination yield of fluoroarenes than the calculated C-F bond dissociation energy.
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Affiliation(s)
- Seonyoung An
- Department of Civil and Environmental Engineering and Institute of Construction and Environmental Engineering, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul 08826, Republic of Korea.
| | - Hojoong Ji
- Department of Civil and Environmental Engineering and Institute of Construction and Environmental Engineering, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul 08826, Republic of Korea.
| | - Jaehyeong Park
- Department of Civil and Environmental Engineering and Institute of Construction and Environmental Engineering, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul 08826, Republic of Korea.
| | - Yongju Choi
- Department of Civil and Environmental Engineering and Institute of Construction and Environmental Engineering, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul 08826, Republic of Korea.
| | - Jong Kwon Choe
- Department of Civil and Environmental Engineering and Institute of Construction and Environmental Engineering, Seoul National University, 1 Gwanak-ro Gwanak-gu, Seoul 08826, Republic of Korea.
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3
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Song XF, Zhang LJ, Zhang XG, Tu HY. Cu-Catalyzed Carbocyclization for General Synthesis of N-Containing Heterocyclics Enabled by BrCF 2COOEt as a C1 Source. J Org Chem 2024; 89:3403-3412. [PMID: 38331393 DOI: 10.1021/acs.joc.3c02827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
A practical and efficient copper-catalyzed carbocyclization of 2-functionalized anilines with ethyl bromodifluoroacetate has been developed. Ethyl bromodifluoroacetate is employed as the C1 source via quadruple cleavage in this transformation. This reaction can afford a variety of N-containing heterocyclics with satisfactory yields and excellent functional group compatibility.
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Affiliation(s)
- Xiao-Fang Song
- College of Safety Science and Engineering, Nanjing Tech University, Nanjing 210009, China
- School of Intelligent Manufacturing and Electronic Engineering, Wenzhou University of Technology, Wenzhou 325035, China
| | - Li-Jing Zhang
- College of Safety Science and Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Xing-Guo Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Hai-Yong Tu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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4
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Ran W, Zhao H, Zhang X, Li S, Sun JF, Liu J, Liu R, Jiang G. Critical Review of Pd-Catalyzed Reduction Process for Treatment of Waterborne Pollutants. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 38323894 DOI: 10.1021/acs.est.3c09198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Catalyzed reduction processes have been recognized as important and supplementary technologies for water treatment, with the specific aims of resource recovery, enhancement of bio/chemical-treatability of persistent organic pollutants, and safe handling of oxygenate ions. Palladium (Pd) has been widely used as a catalyst/electrocatalyst in these reduction processes. However, due to the limited reserves and high cost of Pd, it is essential to gain a better understanding of the Pd-catalyzed decontamination process to design affordable and sustainable Pd catalysts. This review provides a systematic summary of recent advances in understanding Pd-catalyzed reductive decontamination processes and designing Pd-based nanocatalysts for the reductive treatment of water-borne pollutants, with special focus on the interactions and transformation mechanisms of pollutant molecules on Pd catalysts at the atomic scale. The discussion begins by examining the adsorption of pollutants onto Pd sites from a thermodynamic viewpoint. This is followed by an explanation of the molecular-level reaction mechanism, demonstrating how electron-donors participate in the reductive transformation of pollutants. Next, the influence of the Pd reactive site structure on catalytic performance is explored. Additionally, the process of Pd-catalyzed reduction in facilitating the oxidation of pollutants is briefly discussed. The longevity of Pd catalysts, a crucial factor in determining their practicality, is also examined. Finally, we argue for increased attention to mechanism study, as well as precise construction of Pd sites under batch synthesis conditions, and the use of Pd-based catalysts/electrocatalysts in the treatment of concentrated pollutants to facilitate resource recovery.
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Affiliation(s)
- Wei Ran
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huachao Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoling Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shiwei Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie-Fang Sun
- Beijing Center for Disease Prevention and Control, Beijing 100013, China
| | - Jingfu Liu
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310024, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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5
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Rigby K, Huang D, Leshchev D, Lim HJ, Choi H, Meese AF, Weon S, Stavitski E, Kim JH. Palladium Single-Atom (In)Stability Under Aqueous Reductive Conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13681-13690. [PMID: 37650677 PMCID: PMC10501378 DOI: 10.1021/acs.est.3c03346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/21/2023] [Accepted: 08/18/2023] [Indexed: 09/01/2023]
Abstract
Here, we investigate the stability and performance of single-atom Pd on TiO2 for the selective dechlorination of 4-chlorophenol. A challenge inherent to single atoms is their high surface free energy, which results in a tendency for the surface migration and aggregation of metal atoms. This work evaluates various factors affecting the stability of Pd single-atoms, including atomic dispersion, coordination environment, and substrate properties, under reductive aqueous conditions. The transition from single atoms to clusters vastly enhanced dechlorination kinetics without diminishing carbon-chlorine bond selectivity. X-ray absorption spectroscopy analysis using both in situ and ex situ conditions followed the dynamic transformation of single atoms into amorphous clusters, which consist of a unique unsaturated coordination environment and few nanometer diameter. The intricate relationship between stability and performance underscores the vital role of detailed characterization to properly determine the true active species for dehalogenation reactions.
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Affiliation(s)
- Kali Rigby
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
- NSF
Nanosystems Engineering Research Center for Nanotechnology Enabled
Water Treatment (NEWT), Houston, Texas 77005, United States
| | - Dahong Huang
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Denis Leshchev
- National
Synchrotron Light Source-II, Brookhaven
National Laboratory, Upton, New York 11973, United States
| | - Hyun Jeong Lim
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Hyeyeon Choi
- School
of Health and Environmental Science, Korea
University, Seoul 02841, Republic
of Korea
- Department
of Health and Safety Convergence Science, Korea University, Seoul 02841, Republic
of Korea
| | - Aidan Francis Meese
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
| | - Seunghyun Weon
- School
of Health and Environmental Science, Korea
University, Seoul 02841, Republic
of Korea
- Department
of Health and Safety Convergence Science, Korea University, Seoul 02841, Republic
of Korea
| | - Eli Stavitski
- National
Synchrotron Light Source-II, Brookhaven
National Laboratory, Upton, New York 11973, United States
| | - Jae-Hong Kim
- Department
of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520, United States
- NSF
Nanosystems Engineering Research Center for Nanotechnology Enabled
Water Treatment (NEWT), Houston, Texas 77005, United States
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6
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Yang Y, Wei X, Miao J, Zhang R, Xu H, Liu J, Zhu S. Electrochemical Degradation of 4-Fluorophenol in a Moveable Pd-Polypyrrole Catalyst-Mediated Reactor. Electrocatalysis (N Y) 2021. [DOI: 10.1007/s12678-021-00696-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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Naik PJ, An Y, Sedinkin SL, Masching H, Freppon D, Smith EA, Venditti V, Slowing II. Non-Innocent Role of the Ceria Support in Pd-Catalyzed Halophenol Hydrodehalogenation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pranjali J. Naik
- U.S. Department of Energy Ames Laboratory, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Yeongseo An
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Sergey L. Sedinkin
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Hayley Masching
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Daniel Freppon
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Emily A. Smith
- U.S. Department of Energy Ames Laboratory, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Vincenzo Venditti
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa 50011, United States
| | - Igor I. Slowing
- U.S. Department of Energy Ames Laboratory, Ames, Iowa 50011, United States
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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8
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Yu Y, Zhang K, Li Z, Ren C, Chen J, Lin YH, Liu J, Men Y. Microbial Cleavage of C-F Bonds in Two C 6 Per- and Polyfluorinated Compounds via Reductive Defluorination. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:14393-14402. [PMID: 33121241 DOI: 10.1021/acs.est.0c04483] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The C-F bond is one of the strongest single bonds in nature. Although microbial reductive dehalogenation is well known for the other organohalides, no microbial reductive defluorination has been documented for perfluorinated compounds except for a single, nonreproducible study on trifluoroacetate. Here, we report on C-F bond cleavage in two C6 per- and polyfluorinated compounds via reductive defluorination by an organohalide-respiring microbial community. The reductive defluorination was demonstrated by the release of F- and the formation of the corresponding product when lactate was the electron donor, and the fluorinated compound was the sole electron acceptor. The major dechlorinating species in the seed culture, Dehalococcoides, were not responsible for the defluorination as no growth of Dehalococcoides or active expression of Dehalococcoides-reductive dehalogenases was observed. It suggests that minor phylogenetic groups in the community might be responsible for the reductive defluorination. These findings expand our fundamental knowledge of microbial reductive dehalogenation and warrant further studies on the enrichment, identification, and isolation of responsible microorganisms and enzymes. Given the wide use and emerging concerns of fluorinated organics (e.g., per- and polyfluoroalkyl substances), particularly the perfluorinated ones, the discovery of microbial defluorination under common anaerobic conditions may provide valuable insights into the environmental fate and potential bioremediation strategies of these notorious contaminants.
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Affiliation(s)
- Yaochun Yu
- Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Kunyang Zhang
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Zhong Li
- Metabolomics Center, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Changxu Ren
- Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States
| | - Jin Chen
- Environmental Toxicology Graduate Program, University of California, Riverside, California 92521, United States
| | - Ying-Hsuan Lin
- Environmental Toxicology Graduate Program, University of California, Riverside, California 92521, United States
- Department of Environmental Sciences, University of California, Riverside, California 92521, United States
| | - Jinyong Liu
- Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States
| | - Yujie Men
- Department of Chemical and Environmental Engineering, University of California, Riverside, California 92521, United States
- Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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9
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Fukui M, Tanaka A, Kominami H. Photocatalytic Reductive Defluorination of Fluorinated Compounds in Aqueous Alcohol Suspensions of a Metal‐loaded Titanium(IV) Oxide. ChemCatChem 2020. [DOI: 10.1002/cctc.202000299] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Makoto Fukui
- Molecular and Material EngineeringInterdisciplinary Graduate School of Science and Engineering Kindai University 3-4-1 Kowakae Higashiosaka, Osaka 577-8502 Japan
| | - Atsuhiro Tanaka
- Department of Applied ChemistryFaculty of Science and Engineering Kindai University 3-4-1 Kowakae Higashiosaka, Osaka 577-8502 Japan
- Precursory Research for Embryonic Science and Technology (PRESTO)Japan Science and Technology Agency (JST) 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Hiroshi Kominami
- Department of Applied ChemistryFaculty of Science and Engineering Kindai University 3-4-1 Kowakae Higashiosaka, Osaka 577-8502 Japan
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10
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Kacem S, Emondts M, Bordet A, Leitner W. Selective hydrogenation of fluorinated arenes using rhodium nanoparticles on molecularly modified silica. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01716g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rh nanoparticles prepared on hydrophobic molecularly modified silica act as effective catalysts for the hydrogenation of fluoroarenes to fluorocyclohexane derivatives.
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Affiliation(s)
- Souha Kacem
- Max Planck Institute for Chemical Energy Conversion
- 45470 Mülheim an der Ruhr
- Germany
- Institut für Technische und Makromolekulare Chemie
- RWTH Aachen University
| | - Meike Emondts
- Institut für Technische und Makromolekulare Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
- DWI-Leibniz Institute for Interactive Materials
| | - Alexis Bordet
- Max Planck Institute for Chemical Energy Conversion
- 45470 Mülheim an der Ruhr
- Germany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy Conversion
- 45470 Mülheim an der Ruhr
- Germany
- Institut für Technische und Makromolekulare Chemie
- RWTH Aachen University
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11
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Tran BL, Fulton JL, Linehan JC, Balasubramanian M, Lercher JA, Bullock RM. Operando XAFS Studies on Rh(CAAC)-Catalyzed Arene Hydrogenation. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04929] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Ba L. Tran
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - John L. Fulton
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - John C. Linehan
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | | | - Johannes A. Lercher
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - R. Morris Bullock
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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12
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Lende AB, Bhattacharjee S, Lu WY, Tan CS. Hydrogenation of dioctyl phthalate over a Rh-supported Al modified mesocellular foam catalyst. NEW J CHEM 2019. [DOI: 10.1039/c9nj00404a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The solvent free hydrogenation of DOP to DEHHP over an Al modified MCF supported Rh catalyst.
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Affiliation(s)
- Avinash B. Lende
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu
- Republic of China
| | - Saurav Bhattacharjee
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu
- Republic of China
| | - Wei-Yuan Lu
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu
- Republic of China
| | - Chung-Sung Tan
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu
- Republic of China
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13
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Colomban C, Sorokin AB. Comparison of μ-nitrido diiron phthalocyanine – H 2O 2 and Fenton systems in transformation of poly- and perfluorinated aromatics does not support the involvement of hydroxyl radicals. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1467009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Cédric Colomban
- Institut de Recherches sur la Catalyse et l’Environnement de Lyon (IRCELYON), UMR 5256, CNRS-Université Lyon, Villeurbanne Cedex, France
| | - Alexander B. Sorokin
- Institut de Recherches sur la Catalyse et l’Environnement de Lyon (IRCELYON), UMR 5256, CNRS-Université Lyon, Villeurbanne Cedex, France
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14
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Xu Y, Ge T, Ma H, Ding X, Zhang X, Liu Q. Rh-Pd-alloy catalyzed electrochemical hydrodefluorination of 4-fluorophenol in aqueous solutions. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.03.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Chen J, Huang D, Ding Y. Rhodium-Catalyzedortho-Selective C-F Activation and Hydrodefluorination of Heterocycle-Substituted Polyfluoroarenes: Dominated by Phosphine Ligands. ChemistrySelect 2017. [DOI: 10.1002/slct.201601839] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jianping Chen
- The Key Laboratory of Food Colloids and Biotechnology; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi, Jiangsu Province 214122 China
| | - Dongyang Huang
- The Key Laboratory of Food Colloids and Biotechnology; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi, Jiangsu Province 214122 China
| | - Yuqiang Ding
- The Key Laboratory of Food Colloids and Biotechnology; Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi, Jiangsu Province 214122 China
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16
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Mai VH, Nikonov GI. Hydrodefluorination of Fluoroaromatics by Isopropyl Alcohol Catalyzed by a Ruthenium NHC Complex. An Unusual Role of the Carbene Ligand. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Van Hung Mai
- Department of Chemistry, Brock University, Niagara
Region, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
| | - Georgii I. Nikonov
- Department of Chemistry, Brock University, Niagara
Region, 1812 Sir Isaac Brock Way, St. Catharines, Ontario L2S 3A1, Canada
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17
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Xu Y, Ma H, Ge T, Chu Y, Ma CA. Rhodium-catalyzed electrochemical hydrodefluorination: A mild approach for the degradation of fluoroaromatic pollutants. Electrochem commun 2016. [DOI: 10.1016/j.elecom.2016.02.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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18
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Ma X, Liu S, Liu Y, Gu G, Xia C. Comparative study on catalytic hydrodehalogenation of halogenated aromatic compounds over Pd/C and Raney Ni catalysts. Sci Rep 2016; 6:25068. [PMID: 27113406 PMCID: PMC4844995 DOI: 10.1038/srep25068] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 04/11/2016] [Indexed: 11/23/2022] Open
Abstract
Catalytic hydrodehalogenation (HDH) has proved to be an efficient approach to dispose halogenated aromatic compounds (HACs). Liquid-phase HDH of single and mixed halobenzenes/4-halophenols with H2 over 5% Pd/C and Raney Ni catalyst are investigated and compared. For liquid-phase HDH of single HACs, hydrogenolytic scission reactivity of C-X bonds decreases in order of C-Br > C-Cl > C-I > C-F over Pd/C catalyst, and in order of C-I > C-Br > C-Cl > C-F over Raney Ni catalyst. To clarify the reason why hydrogenolytic scission reactivity of C-X bonds over Pd/C and Raney Ni catalysts exhibits different trends, liquid-phase HDH of mixed HACs over Pd/C and Raney Ni catalysts were studied, and catalysts are characterized by SEM, EDX, and XRD techniques. It was found that the high adsorption of iodoarenes on Pd/C catalyst caused the HDH reactivity of iodoarenes to be lower than that of chloroarenes and bromoarenes in the HDH of single HACs. Moreover, the adsorption of in situ produced iodine ion (I−) to catalyst surface would result in the decline of catalytic activity, which might be the main reason why the HDH reactivity of HACs in the presence of NaI is rather low.
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Affiliation(s)
- Xuanxuan Ma
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
| | - Sujing Liu
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Ying Liu
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
| | - Guodong Gu
- Alliance Pharma, Inc. 17 Lee Boulevard Malvern, PA 19355, USA
| | - Chuanhai Xia
- School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
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Nikoshvili L, Shimanskaya E, Bykov A, Yuranov I, Kiwi-Minsker L, Sulman E. Selective hydrogenation of 2-methyl-3-butyn-2-ol over Pd-nanoparticles stabilized in hypercrosslinked polystyrene: Solvent effect. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.01.045] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Sabater S, Mata JA, Peris E. Immobilization of Pyrene-Tagged Palladium and Ruthenium Complexes onto Reduced Graphene Oxide: An Efficient and Highly Recyclable Catalyst for Hydrodefluorination. Organometallics 2014. [DOI: 10.1021/om501040x] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sara Sabater
- Departamento de Química
Inorgánica y Orgánica, Universitat Jaume I, Avenida Sos
Baynat s/n, 12071, Castellón, Spain
| | - José A. Mata
- Departamento de Química
Inorgánica y Orgánica, Universitat Jaume I, Avenida Sos
Baynat s/n, 12071, Castellón, Spain
| | - Eduardo Peris
- Departamento de Química
Inorgánica y Orgánica, Universitat Jaume I, Avenida Sos
Baynat s/n, 12071, Castellón, Spain
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Colomban C, Kudrik EV, Afanasiev P, Sorokin AB. Catalytic Defluorination of Perfluorinated Aromatics under Oxidative Conditions Using N-Bridged Diiron Phthalocyanine. J Am Chem Soc 2014; 136:11321-30. [DOI: 10.1021/ja505437h] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Cédric Colomban
- Institut de Recherches sur
la Catalyse et l′Environnement de Lyon, IRCELYON, UMR 5256, CNRS − Université Lyon 1, 2 av. Albert Einstein, 69626 Villeurbanne, France
| | - Evgenij V. Kudrik
- Institut de Recherches sur
la Catalyse et l′Environnement de Lyon, IRCELYON, UMR 5256, CNRS − Université Lyon 1, 2 av. Albert Einstein, 69626 Villeurbanne, France
| | - Pavel Afanasiev
- Institut de Recherches sur
la Catalyse et l′Environnement de Lyon, IRCELYON, UMR 5256, CNRS − Université Lyon 1, 2 av. Albert Einstein, 69626 Villeurbanne, France
| | - Alexander B. Sorokin
- Institut de Recherches sur
la Catalyse et l′Environnement de Lyon, IRCELYON, UMR 5256, CNRS − Université Lyon 1, 2 av. Albert Einstein, 69626 Villeurbanne, France
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Gianetti TL, Bergman RG, Arnold J. Carbon–fluorine bond cleavage in fluoroarenes via a niobium(iii) imido complex: from stoichiometric to catalytic hydrodefluorination. Chem Sci 2014. [DOI: 10.1039/c4sc00006d] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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23
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Zámostná L, Ahrens M, Braun T. Catalytic hydrodefluorination of fluoroaromatics with silanes as hydrogen source at a binuclear rhodium complex: Characterization of key intermediates. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.05.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Baumgartner R, Stieger GK, McNeill K. Complete hydrodehalogenation of polyfluorinated and other polyhalogenated benzenes under mild catalytic conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:6545-6553. [PMID: 23663092 DOI: 10.1021/es401183v] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Polyfluorinated arenes are increasingly used in industry and can be considered emerging contaminants. Environmentally applicable degradation methods leading to full defluorination are not reported in the literature. In this study, it is demonstrated that the heterogeneous catalyst Rh/Al2O3 is capable of fully defluorinating and hydrogenating polyfluorinated benzenes in water under mild conditions (1 atm H2, ambient temperature) with degradation half-lives between 11 and 42 min. Analysis of the degradation rates of the 12 fluorobenzene congeners showed two trends: slower degradation with increasing number of fluorine substituents and increasing degradation rates with increasing number of adjacent fluorine substituents. The observed fluorinated intermediates indicated that adjacent fluorine substituents are preferably removed. Besides defluorination and hydrogenation, the scope of the catalyst includes dehalogenation of polychlorinated benzenes, bromobenzene, iodobenzene, and selected mixed dihalobenzenes. Polychlorobenzene degradation rates, like their fluorinated counterparts, decreased with increasing halogen substitution. In contrast to the polyfluorobenzenes though, removal of chlorine substituents was sterically driven. All monohalobenzenes were degraded at similar rates; however, when two carbon-halogen bonds were in direct intramolecular competition, the weaker bond was broken first. Differences in sorption affinities of the substrates are suggested to play a major role in determining the relative rates of transformation of halobenzenes by Rh/Al2O3 and H2.
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Affiliation(s)
- Rebekka Baumgartner
- Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland
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