1
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Carbon dioxide-enhanced metal release from kerogen. Sci Rep 2022; 12:15196. [PMID: 36071133 PMCID: PMC9452497 DOI: 10.1038/s41598-022-19564-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/31/2022] [Indexed: 11/19/2022] Open
Abstract
Heavy metals released from kerogen to produced water during oil/gas extraction have caused major enviromental concerns. To curtail water usage and production in an operation and to use the same process for carbon sequestration, supercritical CO2 (scCO2) has been suggested as a fracking fluid or an oil/gas recovery agent. It has been shown previously that injection of scCO2 into a reservoir may cause several chemical and physical changes to the reservoir properties including pore surface wettability, gas sorption capacity, and transport properties. Using molecular dynamics simulations, we here demonstrate that injection of scCO2 might lead to desorption of physically adsorbed metals from kerogen structures. This process on one hand may impact the quality of produced water. On the other hand, it may enhance metal recovery if this process is used for in-situ extraction of critical metals from shale or other organic carbon-rich formations such as coal.
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2
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Kumar S, Mohan B, Tao Z, You H, Ren P. Incorporation of homogeneous organometallic catalysts into metal–organic frameworks for advanced heterogenization: a review. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00663k] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The heterogenization of homogeneous organometallic catalysts by incorporation into MOFs using different strategies, MOF selection, OMC selection, and the use of hybrid heterogeneous catalysts OMC@MOFs in catalytic applications are summarized and discussed.
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Affiliation(s)
- Sandeep Kumar
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Brij Mohan
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Zhiyu Tao
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Hengzhi You
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
| | - Peng Ren
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
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3
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Yilmaz M, Handoko AD, Parkin IP, Sankar G. Probing the electronic and geometric structures of photoactive electrodeposited Cu2O films by X-ray absorption spectroscopy. J Catal 2020. [DOI: 10.1016/j.jcat.2020.06.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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4
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A nature-inspired hydrogen-bonded supramolecular complex for selective copper ion removal from water. Nat Commun 2020; 11:3947. [PMID: 32769977 PMCID: PMC7415137 DOI: 10.1038/s41467-020-17757-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 07/16/2020] [Indexed: 01/08/2023] Open
Abstract
Herein, we present a scalable approach for the synthesis of a hydrogen-bonded organic–inorganic framework via coordination-driven supramolecular chemistry, for efficient remediation of trace heavy metal ions from water. In particular, using copper as our model ion of interest and inspired by nature’s use of histidine residues within the active sites of various copper binding proteins, we design a framework featuring pendant imidazole rings and copper-chelating salicylaldoxime, known as zinc imidazole salicylaldoxime supramolecule. This material is water-stable and exhibits unprecedented adsorption kinetics, up to 50 times faster than state-of-the-art materials for selective copper ion capture from water. Furthermore, selective copper removal is achieved using this material in a pH range that was proven ineffective with previously reported metal–organic frameworks. Molecular dynamics simulations show that this supramolecule can reversibly breathe water through lattice expansion and contraction, and that water is initially transported into the lattice through hopping between hydrogen-bond sites. Heavy metals and metalloids pose major threats to health and environmental ecosystems, thus systems for low-cost remediation are needed. Here the authors report the scalable design of a hydrogen-bonded organic–inorganic framework for selective removal of trace heavy metal ions from water.
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5
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Zhang R, McEwen JS. Local Environment Sensitivity of the Cu K-Edge XANES Features in Cu-SSZ-13: Analysis from First-Principles. J Phys Chem Lett 2018; 9:3035-3042. [PMID: 29665684 DOI: 10.1021/acs.jpclett.8b00675] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Cu K-edge X-ray absorption near-edge spectra (XANES) have been widely used to study the properties of Cu-SSZ-13. In this Letter, the sensitivity of the XANES features to the local environment for a Cu+ cation with a linear configuration and a Cu2+ cation with a square-linear configuration in Cu-SSZ-13 is reported. When a Cu+ cation is bonded to H2O or NH3 in a linear configuration, the XANES has a strong peak at around 8983 eV. The intensity of this peak decreases as the linear configuration is broken. As for the Cu2+ cations in a square-planar configuration with a coordination number of 4, two peaks at around 8986 and 8993 eV are found. An intensity decrease for both peaks at around 8986 and 8993 eV is found in an NH3_4_Z2Cu model as the N-Cu-N angle changes from 180 to 100°. We correlate these features to the variation of the 4p state by PDOS analysis. In addition, the feature peaks for both the Cu+ cation and Cu2+ cation do not show a dependence on the Cu-N bond length. We further show that the feature peaks also change when the coordination number of the Cu cation is varied, while these feature peaks are independent of the zeolite topology. These findings help elucidate the experimental XANES features at an atomic and an electronic level.
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Affiliation(s)
- Renqin Zhang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering , Washington State University , Pullman , Washington 99164 , United States
| | - Jean-Sabin McEwen
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering , Washington State University , Pullman , Washington 99164 , United States
- Department of Physics and Astronomy , Washington State University , Pullman , Washington 99164 , United States
- Department of Chemistry , Washington State University , Pullman , Washington 99164 , United States
- Department of Biological Systems Engineering , Washington State University , Pullman , Washington 99164 , United States
- Institute for Integrated Catalysis , Pacific Northwest National Laboratory , Richland , Washington 99352 , United States
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6
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Guan S, Davies PR, Gibson EK, Lennon D, Rossi GE, Winfield J, Callison J, Wells PP, Willock DJ. Structural behaviour of copper chloride catalysts during the chlorination of CO to phosgene. Faraday Discuss 2018; 208:67-85. [DOI: 10.1039/c8fd00005k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An attapulgite-supported Cu(ii)Cl2 catalyst has been studied with XANES and DFT approaches to follow the chlorination reaction of CO to phosgene.
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Affiliation(s)
- Shaoliang Guan
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | - Philip R. Davies
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
| | - Emma K. Gibson
- UK Catalysis Hub
- RCaH
- Rutherford Appleton Laboratory
- Didcot
- UK
| | - David Lennon
- School of Chemistry
- University of Glasgow
- Glasgow
- UK
| | | | | | - June Callison
- UK Catalysis Hub
- RCaH
- Rutherford Appleton Laboratory
- Didcot
- UK
| | - Peter P. Wells
- UK Catalysis Hub
- RCaH
- Rutherford Appleton Laboratory
- Didcot
- UK
| | - David J. Willock
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
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7
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Martini A, Borfecchia E, Lomachenko KA, Pankin IA, Negri C, Berlier G, Beato P, Falsig H, Bordiga S, Lamberti C. Composition-driven Cu-speciation and reducibility in Cu-CHA zeolite catalysts: a multivariate XAS/FTIR approach to complexity. Chem Sci 2017; 8:6836-6851. [PMID: 29147509 PMCID: PMC5644121 DOI: 10.1039/c7sc02266b] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 07/23/2017] [Indexed: 12/21/2022] Open
Abstract
The small pore Cu-CHA zeolite is attracting increasing attention as a versatile platform to design novel single-site catalysts for deNO x applications and for the direct conversion of methane to methanol. Understanding at the atomic scale how the catalyst composition influences the Cu-species formed during thermal activation is a key step to unveil the relevant composition-activity relationships. Herein, we explore by in situ XAS the impact of Cu-CHA catalyst composition on temperature-dependent Cu-speciation and reducibility. Advanced multivariate analysis of in situ XANES in combination with DFT-assisted simulation of XANES spectra and multi-component EXAFS fits as well as in situ FTIR spectroscopy of adsorbed N2 allow us to obtain unprecedented quantitative structural information on the complex dynamics during the speciation of Cu-sites inside the framework of the CHA zeolite.
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Affiliation(s)
- A Martini
- Department of Chemistry , NIS Centre and INSTM Reference Center , University of Turin , Via P. Giuria 7 , Turin , 10125 Italy .
| | - E Borfecchia
- Department of Chemistry , NIS Centre and INSTM Reference Center , University of Turin , Via P. Giuria 7 , Turin , 10125 Italy . .,Haldor Topsøe A/S , Haldor Topsøes Allé 1 , Kgs. Lyngby , 2800 Denmark
| | - K A Lomachenko
- European Synchrotron Radiation Facility , 71 avenue des Martyrs, CS 40220 , Grenoble Cedex 9 , 38043 France.,IRC "Smart Materials" , Southern Federal University , Zorge str. 5 , Rostov-on-Don , 344090 Russia
| | - I A Pankin
- Department of Chemistry , NIS Centre and INSTM Reference Center , University of Turin , Via P. Giuria 7 , Turin , 10125 Italy . .,IRC "Smart Materials" , Southern Federal University , Zorge str. 5 , Rostov-on-Don , 344090 Russia
| | - C Negri
- Department of Chemistry , NIS Centre and INSTM Reference Center , University of Turin , Via P. Giuria 7 , Turin , 10125 Italy .
| | - G Berlier
- Department of Chemistry , NIS Centre and INSTM Reference Center , University of Turin , Via P. Giuria 7 , Turin , 10125 Italy .
| | - P Beato
- Haldor Topsøe A/S , Haldor Topsøes Allé 1 , Kgs. Lyngby , 2800 Denmark
| | - H Falsig
- Haldor Topsøe A/S , Haldor Topsøes Allé 1 , Kgs. Lyngby , 2800 Denmark
| | - S Bordiga
- Department of Chemistry , NIS Centre and INSTM Reference Center , University of Turin , Via P. Giuria 7 , Turin , 10125 Italy .
| | - C Lamberti
- IRC "Smart Materials" , Southern Federal University , Zorge str. 5 , Rostov-on-Don , 344090 Russia.,Department of Chemistry , CrisDi Centre and INSTM Reference Center , University of Turin , Via P. Giuria 7 , Turin , 10125 Italy
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8
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Grigoropoulos A, Whitehead GFS, Perret N, Katsoulidis AP, Chadwick FM, Davies RP, Haynes A, Brammer L, Weller AS, Xiao J, Rosseinsky MJ. Encapsulation of an organometallic cationic catalyst by direct exchange into an anionic MOF. Chem Sci 2016; 7:2037-2050. [PMID: 29899929 PMCID: PMC5968521 DOI: 10.1039/c5sc03494a] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 12/01/2015] [Indexed: 11/21/2022] Open
Abstract
Metal-Organic Frameworks (MOFs) are porous crystalline materials that have emerged as promising hosts for the heterogenization of homogeneous organometallic catalysts, forming hybrid materials which combine the benefits of both classes of catalysts. Herein, we report the encapsulation of the organometallic cationic Lewis acidic catalyst [CpFe(CO)2(L)]+ ([Fp-L]+, Cp = η5-C5H5, L = weakly bound solvent) inside the pores of the anionic [Et4N]3[In3(BTC)4] MOF (H3BTC = benzenetricarboxylic acid) via a direct one-step cation exchange process. To conclusively validate this methodology, initially [Cp2Co]+ was used as an inert spatial probe to (i) test the stability of the selected host; (ii) monitor the stoichiometry of the cation exchange process and (iii) assess pore dimensions, spatial location of the cationic species and guest-accessible space by single crystal X-ray crystallography. Subsequently, the quasi-isosteric [Fp-L]+ was encapsulated inside the pores via partial cation exchange to form [(Fp-L)0.6(Et4N)2.4][In3(BTC)4]. The latter was rigorously characterized and benchmarked as a heterogeneous catalyst in a simple Diels-Alder reaction, thus verifying the integrity and reactivity of the encapsulated molecular catalyst. These results provide a platform for the development of heterogeneous catalysts with chemically and spatially well-defined catalytic sites by direct exchange of cationic catalysts into anionic MOFs.
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Affiliation(s)
| | | | - Noémie Perret
- Department of Chemistry , University of Liverpool , Liverpool L69 7ZD , UK .
| | | | - F Mark Chadwick
- Department of Chemistry , Chemistry Research Laboratories , University of Oxford , Mansfield Road , Oxford OX1 3TA , UK .
| | - Robert P Davies
- Department of Chemistry , Imperial College London , South Kensington , London SW7 2AZ , UK
| | - Anthony Haynes
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK
| | - Lee Brammer
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK
| | - Andrew S Weller
- Department of Chemistry , Chemistry Research Laboratories , University of Oxford , Mansfield Road , Oxford OX1 3TA , UK .
| | - Jianliang Xiao
- Department of Chemistry , University of Liverpool , Liverpool L69 7ZD , UK .
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9
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Varga G, Csendes Z, Bajnóczi ÉG, Carlson S, Sipos P, Pálinkó I. Fe-amino acid complexes immobilized on silica gel as active and highly selective catalysts in cyclohexene epoxidation. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-1920-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Mureşeanu M, Puşcaşu M, Şomăcescu S, Cârjă G. CuII(Sal-Ala)/CuAlLDH Hybrid as Novel Efficient Catalyst for Artificial Superoxide Dismutase (SOD) and Cyclohexene Oxidation by H2O2. Catal Letters 2015. [DOI: 10.1007/s10562-015-1555-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Varga G, Timár Z, Csendes Z, Bajnóczi É, Carlson S, Canton S, Bagi L, Sipos P, Pálinkó I. Building, characterising and catalytic activity testing of Co–C-protected amino acid complexes covalently grafted onto chloropropylated silica gel. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.11.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Beale AM, Gao F, Lezcano-Gonzalez I, Peden CHF, Szanyi J. Recent advances in automotive catalysis for NOx emission control by small-pore microporous materials. Chem Soc Rev 2015; 44:7371-405. [PMID: 25913215 DOI: 10.1039/c5cs00108k] [Citation(s) in RCA: 438] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The ever increasing demand to develop highly fuel efficient engines coincides with the need to minimize air pollution originating from the exhaust gases of internal combustion engines. Dramatically improved fuel efficiency can be achieved at air-to-fuel ratios much higher than stoichiometric. In the presence of oxygen in large excess, however, traditional three-way catalysts are unable to reduce NOx. Among the number of lean-NOx reduction technologies, selective catalytic reduction (SCR) of NOx by NH3 over Cu- and Fe-ion exchanged zeolite catalysts has been extensively studied over the past 30+ years. Despite the significant advances in developing a viable practical zeolite-based catalyst for lean NOx reduction, the insufficient hydrothermal stabilities of the zeolite structures considered cast doubts about their real-world applicability. During the past decade renewed interest in zeolite-based lean NOx reduction was spurred by the discovery of the very high activity of Cu-SSZ-13 (and the isostructural Cu-SAPO-34) in the NH3-SCR of NOx. These new, small-pore zeolite-based catalysts not only exhibited very high NOx conversion and N2 selectivity, but also exhibited exceptionally high hydrothermal stability at high temperatures. In this review we summarize the key discoveries of the past ∼5 years that led to the introduction of these catalysts into practical applications. This review first briefly discusses the structure and preparation of the CHA structure-based zeolite catalysts, and then summarizes the key learnings of the rather extensive (but not complete) characterisation work. Then we summarize the key findings of reaction kinetic studies, and provide some mechanistic details emerging from these investigations. At the end of the review we highlight some of the issues that still need to be addressed in automotive exhaust control catalysis.
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Affiliation(s)
- A M Beale
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
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13
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Newland SH, Xuereb DJ, Gianotti E, Marchese L, Rios R, Raja R. Highly effective design strategy for the heterogenisation of chemo- and enantioselective organocatalysts. Catal Sci Technol 2015. [DOI: 10.1039/c4cy00895b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The covalent heterogenisation of cinchonine and 1,4-diazabicyclo[2.2.2]octane within a range of mesoporous silicas affords highly selective and active organocatalysts.
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Affiliation(s)
| | | | - Enrica Gianotti
- Dipartimento di Scienze e Innovazione Tecnologica
- Centro Interdisciplinare Nano-SiSTeMI
- Università del Piemonte Orientale “A. Avogadro”
- Alessandria
- Italy
| | - Leonardo Marchese
- Dipartimento di Scienze e Innovazione Tecnologica
- Centro Interdisciplinare Nano-SiSTeMI
- Università del Piemonte Orientale “A. Avogadro”
- Alessandria
- Italy
| | - Ramon Rios
- School of Chemistry
- University of Southampton
- Southampton
- UK
| | - Robert Raja
- School of Chemistry
- University of Southampton
- Southampton
- UK
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14
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Štefane B, Perdih F, Višnjevac A, Požgan F. Novel triazole-based ligands and their zinc(ii) and nickel(ii) complexes with a nitrogen donor environment as potential structural models for mononuclear active sites. NEW J CHEM 2015. [DOI: 10.1039/c4nj01642d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tridentate N,N,N-1,2,3-triazole-based ligand successfully coordinated to nickel ions through the less Lewis basic N2 atom of the triazole ring.
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Affiliation(s)
- Bogdan Štefane
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- 1000 Ljubljana
- Slovenia
- EN-FIST Centre of Excellence
| | - Franc Perdih
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- 1000 Ljubljana
- Slovenia
- EN-FIST Centre of Excellence
| | | | - Franc Požgan
- Faculty of Chemistry and Chemical Technology
- University of Ljubljana
- 1000 Ljubljana
- Slovenia
- EN-FIST Centre of Excellence
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15
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Borfecchia E, Lomachenko KA, Giordanino F, Falsig H, Beato P, Soldatov AV, Bordiga S, Lamberti C. Revisiting the nature of Cu sites in the activated Cu-SSZ-13 catalyst for SCR reaction. Chem Sci 2015; 6:548-563. [PMID: 28936309 PMCID: PMC5588737 DOI: 10.1039/c4sc02907k] [Citation(s) in RCA: 234] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Accepted: 10/13/2014] [Indexed: 12/23/2022] Open
Abstract
Cu-SSZ-13 is a highly active NH3-SCR catalyst for the abatement of harmful nitrogen oxides (NO x , x = 1, 2) from the exhausts of lean-burn engines. The study of Cu-speciation occurring upon thermal dehydration is a key step for the understanding of the enhanced catalytic properties of this material and for identifying the SCR active sites and their redox capability. Herein, we combined FTIR, X-ray absorption (XAS) and emission (XES) spectroscopies with DFT computational analysis to elucidate the nature and location of the most abundant Cu sites in the activated catalyst. Different Cu species have been found to be dominant as a function of the dehydration temperature and conditions. Data analysis revealed that the dehydration process of Cu cations is essentially completed at 250 °C, with the formation of dehydrated [CuOH]+ species hosted in close proximity to 1-Al sites in both d6r and 8r units of the SSZ-13 matrix. These species persist at higher temperatures only if a certain amount of O2 is present in the gas feed, while under inert conditions they undergo virtually total "self-reduction" as a consequence of an OH extra-ligand loss, resulting in bi-coordinated bare Cu+ cations. Synchrotron characterization supported by computational analysis allowed an unprecedented quantitative refinement of the local environment and structural parameters of these Cu(ii) and Cu(i) species.
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Affiliation(s)
- E Borfecchia
- Department of Chemistry and INSTM Reference Center , University of Turin , via P. Giuria 7 , 10125 Turin , Italy .
- NIS Centre of Excellence , University of Turin , Italy
| | - K A Lomachenko
- Department of Chemistry and INSTM Reference Center , University of Turin , via P. Giuria 7 , 10125 Turin , Italy .
- Southern Federal University , Zorge street 5 , 344090 Rostov-on-Don , Russia
| | - F Giordanino
- Department of Chemistry and INSTM Reference Center , University of Turin , via P. Giuria 7 , 10125 Turin , Italy .
- NIS Centre of Excellence , University of Turin , Italy
| | - H Falsig
- Haldor Topsøe A/S , Nymøllevej 55, 2800 Kgs. , Lyngby , Denmark
| | - P Beato
- Haldor Topsøe A/S , Nymøllevej 55, 2800 Kgs. , Lyngby , Denmark
| | - A V Soldatov
- Southern Federal University , Zorge street 5 , 344090 Rostov-on-Don , Russia
| | - S Bordiga
- Department of Chemistry and INSTM Reference Center , University of Turin , via P. Giuria 7 , 10125 Turin , Italy .
- NIS Centre of Excellence , University of Turin , Italy
| | - C Lamberti
- Department of Chemistry and INSTM Reference Center , University of Turin , via P. Giuria 7 , 10125 Turin , Italy .
- CrisDI Center of Crystallography , University of Turin , Italy
- Southern Federal University , Zorge street 5 , 344090 Rostov-on-Don , Russia
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16
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Choudhary A, Das B, Ray S. Encapsulation of a Ni salen complex in zeolite Y: an experimental and DFT study. Dalton Trans 2015; 44:3753-63. [DOI: 10.1039/c4dt03554b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A planar diamagnetic Ni-complex when encapsulated in zeolite Y adopts a nonplanar geometry and shows a pragmatic change in its magnetic properties.
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Affiliation(s)
| | - Bidisa Das
- Indian Association for the Cultivation of Science
- Jadavpur
- India
| | - Saumi Ray
- Birla Institute of Technology and Science
- Pilani
- India
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17
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Shen D, Miao C, Xu D, Xia C, Sun W. Highly Efficient Oxidation of Secondary Alcohols to Ketones Catalyzed by Manganese Complexes of N4 Ligands with H2O2. Org Lett 2014; 17:54-7. [DOI: 10.1021/ol5032156] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Duyi Shen
- State Key
Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute
of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chengxia Miao
- State Key
Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute
of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Daqian Xu
- State Key
Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute
of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Chungu Xia
- State Key
Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute
of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
| | - Wei Sun
- State Key
Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute
of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China
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18
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Bøyesen KL, Kristiansen T, Mathisen K. Identification of synergistic Cu/V redox pair in VCu:AlPO-5; a comparison with VCu:ZSM-5. Phys Chem Chem Phys 2014; 16:20451-63. [PMID: 25138673 DOI: 10.1039/c4cp02503b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Vanadium(V) and copper(II) were co-deposited into AlPO-5 and H-ZSM-5 three-dimensional microporous carriers to yield VCu:AlPO-5 and VCu:ZSM-5. The materials, along with copper analogues were tested for the selective oxidation of propene, and the catalysts perform in the following order: VCu:AlPO-5 > Cu:AlPO-5 > VCu:ZSM-5 > Cu:ZSM-5. Acrolein was selectively formed over VCu:AlPO-5 and Cu:AlPO-5 over a very wide range from 300 to 450 °C, whereas VCu:ZSM-5 displays a limited temperature window for acrolein formation (300-350 °C). Hence, the choice of carrier and presence of vanadium as a co-cation greatly affects the acrolein selectivity and activity window. The vanadium and copper reduction events were monitored by in situ X-ray Absorption Spectroscopy (XAS) during C3H6-TPR (1.11%) to 450 °C. The Cu(II)/(I) redox pair initiates reduction of V(V) → V(IV) in VCu:AlPO-5 and VCu:ZSM-5 at 375 °C. Metallic copper is the major valence fraction above 400 °C in both samples while vanadium is present as V(IV)/V(III) species. In the monometallic copper analogues Cu(I) is the major valence fraction above 350 °C, hence synergistic effects between the Cu/V pair causes hyper-reduction of copper. EXAFS shows that copper and vanadium are in close proximity in VCu:AlPO-5 only, being linked by bridging oxygens (Cu-O-V) believed to interact with propene. By contrast, propene adsorbs on Brønsted sites in VCu:ZSM-5 inhibiting acrolein formation at elevated temperatures, as confirmed by DRIFTS. We believe the reactive Cu/V pair in neutral AlPO-5 generates extralattice oxygens favouring acrolein formation over a wide temperature range.
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Affiliation(s)
- Katrine Lie Bøyesen
- Department of Chemistry, Norwegian University of Science and Technology, Høgskoleringen 5, N-7491 Trondheim, Norway.
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Manna J, Amali AJ, Rana RK. Confinement of CuII-Phthalocyanine in a Bioinspired Hybrid Nanoparticle-Assembled Structure Yields Selective and Stable Epoxidation Catalysts. Chemistry 2014; 20:8453-7. [DOI: 10.1002/chem.201402614] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Indexed: 11/11/2022]
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20
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Giordanino F, Borfecchia E, Lomachenko KA, Lazzarini A, Agostini G, Gallo E, Soldatov AV, Beato P, Bordiga S, Lamberti C. Interaction of NH3 with Cu-SSZ-13 Catalyst: A Complementary FTIR, XANES, and XES Study. J Phys Chem Lett 2014; 5:1552-9. [PMID: 26270095 DOI: 10.1021/jz500241m] [Citation(s) in RCA: 176] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
In the typical NH3-SCR temperature range (100-500 °C), ammonia is one of the main adsorbed species on acidic sites of Cu-SSZ-13 catalyst. Therefore, the study of adsorbed ammonia at high temperature is a key step for the understanding of its role in the NH3-SCR catalytic cycle. We employed different spectroscopic techniques to investigate the nature of the different complexes occurring upon NH3 interaction. In particular, FTIR spectroscopy revealed the formation of different NH3 species, that is, (i) NH3 bonded to copper centers, (ii) NH3 bonded to Brønsted sites, and (iii) NH4(+)·nNH3 associations. XANES and XES spectroscopy allowed us to get an insight into the geometry and electronic structure of Cu centers upon NH3 adsorption, revealing for the first time in Cu-SSZ-13 the presence of linear Cu(+) species in Ofw-Cu-NH3 or H3N-Cu-NH3 configuration.
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Affiliation(s)
| | | | | | | | - Giovanni Agostini
- ∥European Synchrotron Radiation Facility, 6, rue Jules Horowitz, B.P. 220, F-38043 Grenoble cedex, France
| | - Erik Gallo
- ∥European Synchrotron Radiation Facility, 6, rue Jules Horowitz, B.P. 220, F-38043 Grenoble cedex, France
| | | | - Pablo Beato
- ⊥Haldor Topsøe A/S, Nymøllevej 55, 2800 Kgs. Lyngby, Denmark
| | | | - Carlo Lamberti
- #Southern Federal University, Zorge street 5, 344090 Rostov-on-Don, Russia
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21
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Zhao H, Li X, Wang J, Li L, Wang R. Synthesis and Crystal Structures of Coordination Complexes Containing Cu2I2Units and Their Application in Luminescence and Catalysis. Chempluschem 2013; 78:1491-1502. [DOI: 10.1002/cplu.201300249] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Indexed: 12/24/2022]
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22
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Bania KK, Karunakar GV, Goutham K, Deka RC. Enantioselective Henry Reaction Catalyzed by “Ship in a Bottle” Complexes. Inorg Chem 2013; 52:8017-29. [DOI: 10.1021/ic400599c] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kusum K. Bania
- Department
of Chemical Sciences, Tezpur University, Napaam, Assam, India 784028
| | - Galla V. Karunakar
- Division of Crop Protection Chemicals, Indian Institute of Chemical Technology, Uppal Road, Hyderabad, Andhra
Pradesh, India 500007
| | - Kommuru Goutham
- Division of Crop Protection Chemicals, Indian Institute of Chemical Technology, Uppal Road, Hyderabad, Andhra
Pradesh, India 500007
| | - Ramesh C. Deka
- Department
of Chemical Sciences, Tezpur University, Napaam, Assam, India 784028
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23
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Hu J, Liao C, Zhao J. Three Cu(II) Complexes Based on Mixed Ligands: Their Structures and Catalytic Behaviour. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13371887324682] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The Cu(II) complexes, [Cu(2,5-pydc)(bmi)(H2O)]n, [Cu2(H2O)2(2,6-pydc)2(btx)]·2H2O and [Cu(btc)2(bmi)2]·1.5H2O, (bmi = 1-[(benzotriazol-yl)methyl)-1H-1,3-imidazole; 2,5-H2pydc = pyridine-2,5-dicarboxylic acid; btx = 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene; H3btc = 1,3,5-benzenetricarboxylate) have been synthesised and their X-ray structures show that hydrogen bonds and π···π stacking interactions are employed in their construction. The complexes can effectively catalyse the oxidative coupling reaction of 2,6-di-tert-butylphenol in good yield and unique selectivity.
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Affiliation(s)
- Jiyong Hu
- Department of Chemistry and Chemical Engineering, Henan Univeristy of Urban Construction, Henan 467036, P. R. China
| | - Chunli Liao
- Department of Bioengineering, Henan Univeristy of Urban Construction, Henan 467036, P. R. China
| | - Jin'an Zhao
- Department of Chemistry and Chemical Engineering, Henan Univeristy of Urban Construction, Henan 467036, P. R. China
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24
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Three new metal–organic frameworks constructed from triazol-phenyl polycarboxyl acid: Synthesis, crystal structures and properties. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.01.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Synthesis and transition metal complexes of 3,3-bis(1-vinylimidazol-2-yl)propionic acid, a new N,N,O ligand suitable for copolymerisation. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.03.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Mijovilovich A, Hamman S, Thomas F, de Groot FMF, Weckhuysen BM. Protonation of the oxygen axial ligand in galactose oxidase model compounds as seen with high resolution X-ray emission experiments and FEFF simulations. Phys Chem Chem Phys 2011; 13:5600-4. [PMID: 21283844 DOI: 10.1039/c0cp01144d] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
X-ray Emission Spectroscopy (XES) crossover peaks were shown to be sensitive to the protonation state of solvent molecules in the Zn protein carbonic anhydrase and its model compounds. Here we extend such studies to galactose oxidase models i.e. Cu(ii) open d-shell systems, illustrating that XES combined with FEFF8 simulations reflect changes in the protonation state of the phenolate ligand for the copper center.
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Affiliation(s)
- Ana Mijovilovich
- Department of Inorganic Chemistry and Catalysis, Utrecht University, Utrecht, The Netherlands.
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27
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Xuereb DJ, Raja R. Design strategies for engineering selectivity in bio-inspired heterogeneous catalysts. Catal Sci Technol 2011. [DOI: 10.1039/c0cy00088d] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Superoxide dismutase mimicking Cu(II)–mixed amino acid complexes covalently grafted onto silica gel—an FT-IR study. Anal Bioanal Chem 2010; 397:549-55. [DOI: 10.1007/s00216-009-3397-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 12/10/2009] [Accepted: 12/10/2009] [Indexed: 10/20/2022]
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29
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Zahmakıran M, Akbayrak S, Kodaira T, Özkar S. Osmium(0) nanoclusters stabilized by zeolite framework; highly active catalyst in the aerobic oxidation of alcohols under mild conditions. Dalton Trans 2010; 39:7521-7. [DOI: 10.1039/c003200j] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Liang AJ, Craciun R, Chen M, Kelly TG, Kletnieks PW, Haw JF, Dixon DA, Gates BC. Zeolite-Supported Organorhodium Fragments: Essentially Molecular Surface Chemistry Elucidated with Spectroscopy and Theory. J Am Chem Soc 2009; 131:8460-73. [DOI: 10.1021/ja900041n] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ann J. Liang
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, and Department of Chemistry, University of Southern California, Los Angeles, California 90089
| | - Raluca Craciun
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, and Department of Chemistry, University of Southern California, Los Angeles, California 90089
| | - Mingyang Chen
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, and Department of Chemistry, University of Southern California, Los Angeles, California 90089
| | - T. Glenn Kelly
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, and Department of Chemistry, University of Southern California, Los Angeles, California 90089
| | - Philip W. Kletnieks
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, and Department of Chemistry, University of Southern California, Los Angeles, California 90089
| | - James F. Haw
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, and Department of Chemistry, University of Southern California, Los Angeles, California 90089
| | - David A. Dixon
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, and Department of Chemistry, University of Southern California, Los Angeles, California 90089
| | - Bruce C. Gates
- Department of Chemical Engineering and Materials Science, University of California, Davis, California 95616, Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487, and Department of Chemistry, University of Southern California, Los Angeles, California 90089
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31
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Pirngruber GD, Frunz L, Lüchinger M. The characterisation and catalytic properties of biomimetic metal–peptide complexes immobilised on mesoporous silica. Phys Chem Chem Phys 2009; 11:2928-38. [DOI: 10.1039/b819678h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Schoonheydt RA, Weckhuysen BM. Editorial Highlight: Molecules in confined spaces. Phys Chem Chem Phys 2009; 11:2794-8. [DOI: 10.1039/b905015a] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Groppo E, Uddin M, Bordiga S, Zecchina A, Lamberti C. Structure and Redox Activity of Copper Sites Isolated in a Nanoporous P4VP Polymeric Matrix. Angew Chem Int Ed Engl 2008; 47:9269-73. [DOI: 10.1002/anie.200802815] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Elena Groppo
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
| | - Mohammed Jasim Uddin
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
| | - Silvia Bordiga
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
| | - Adriano Zecchina
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
| | - Carlo Lamberti
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
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34
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Groppo E, Uddin M, Bordiga S, Zecchina A, Lamberti C. Structure and Redox Activity of Copper Sites Isolated in a Nanoporous P4VP Polymeric Matrix. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802815] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Elena Groppo
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
| | - Mohammed Jasim Uddin
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
| | - Silvia Bordiga
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
| | - Adriano Zecchina
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
| | - Carlo Lamberti
- Department of Inorganic, Physical and Material Chemistry, NIS Centre of Excellence, and INSTM Unità di Torino, University of Torino, via P. Giuria 7, 10125 Torino (Italy), Fax: (+39) 011‐670‐7855
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35
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Bruijnincx PCA, Viciano-Chumillas M, Lutz M, Spek AL, Reedijk J, van Koten G, Klein Gebbink RJM. Oxidative double dehalogenation of tetrachlorocatechol by a bio-inspired CuII complex: formation of chloranilic acid. Chemistry 2008; 14:5567-76. [PMID: 18449873 DOI: 10.1002/chem.200701878] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Copper(II) complexes of the potentially tripodal N,N,O ligand 3,3-bis(1-methylimidazol-2-yl)propionate (L1) and its conjugate acid HL1 have been synthesised and structurally and spectroscopically characterised. The reaction of equimolar amounts of ligand and CuII resulted in the complexes [Cu(L1)]n(X)n (X=OTf-, PF6(-); n=1,2), for which a new bridging coordination mode of L1 is inferred. Although these complexes showed moderate catecholase activity in the oxidation of 3,5-di-tert-butylcatechol, surprising reactivity with the pseudo-substrate tetrachlorocatechol was observed. A chloranilato-bridged dinuclear CuII complex was isolated from the reaction of [Cu(L1)]n(PF6)n with tetrachlorocatechol. This stoichiometric oxidative double dehalogenation of tetrachlorocatechol to chloranilic acid by a biomimetic copper(II) complex is unprecedented. The crystal structure of the product, [Cu2(ca)Cl2(HL1)2], shows a bridging bis-bidentate chloranilato (ca) ligand and ligand L1 coordinated as its conjugate acid (HL1) in a tridentate fashion. Magnetic susceptibility studies revealed weak antiferromagnetic coupling (J= -35 cm(-1)) between the two copper centres in the dinuclear complex. Dissolution of the green complex [Cu2(ca)Cl2(HL1)2] resulted in the formation of new pink-purple mononuclear compound [Cu(ca)(HL1)(H2O)], the crystal structure of which was determined. It showed a terminal bidentate chloranilato ligand and N,N-bidentate coordination of ligand HL1, which illustrates the flexible coordination chemistry of ligand L1.
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Affiliation(s)
- Pieter C A Bruijnincx
- Chemical Biology & Organic Chemistry, Department of Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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Bruijnincx P, Buurmans I, Gosiewska S, Moelands M, Lutz M, Spek A, van Koten G, Klein Gebbink R. Iron(II) Complexes with Bio-Inspired N,N,O Ligands as Oxidation Catalysts: Olefin Epoxidation andcis-Dihydroxylation. Chemistry 2008; 14:1228-37. [DOI: 10.1002/chem.200700573] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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The incorporation of Me-histidine complexes in the structure of FAU-type zeolite: Characterization of the obtained materials. HEMIJSKA INDUSTRIJA 2008. [DOI: 10.2298/hemind0803125s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
L-histidine, a naturally occurring amino acid, was incorporated inside the supercages of FAU type zeolite in a form of Me-complex entity (Me = Cu(II), Zn(II), Fe(III)). The preparation was done either by ion-exchange procedure, or previously prepared Me-histidine complex was incorporated into the a cages of Y zeolite by occlusion. The preparation procedure was found to be a very important factor, as well as the amount of metal complex loaded on the zeolite. The characterization of obtained samples was performed using Diffuse Reflectance Ultraviolet-Visible Spectroscopy (DRUV-Vis), 13C MAS NMR and Infrared Spectroscopy (FTIR). It was noticed that 1-hostidine interacted with the zeolitic framework, and with the extra-framework cation, as well. The results obtained by TG-DSC/MAS technique, revealed that the thermal stability of incorporated histidine was increased, in comparison with that one of pure histidine.
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Bruijnincx PCA, van Koten G, Klein Gebbink RJM. Mononuclear non-heme iron enzymes with the 2-His-1-carboxylate facial triad: recent developments in enzymology and modeling studies. Chem Soc Rev 2008; 37:2716-44. [DOI: 10.1039/b707179p] [Citation(s) in RCA: 412] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bruijnincx PCA, Lutz M, den Breejen JP, Spek AL, van Koten G, Klein Gebbink RJM. Zinc complexes of the biomimetic N,N,O ligand family of substituted 3,3-bis(1-alkylimidazol-2-yl)propionates: the formation of oxalate from pyruvate. J Biol Inorg Chem 2007; 12:1181-96. [PMID: 17828423 PMCID: PMC2039866 DOI: 10.1007/s00775-007-0285-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2007] [Accepted: 08/02/2007] [Indexed: 11/20/2022]
Abstract
The coordination chemistry of the 2-His-1-carboxylate facial triad mimics 3,3-bis(1-methylimidazol-2-yl)propionate (MIm(2)Pr) and 3,3-bis(1-ethyl-4-isopropylimidazol-2-yl) propionate (iPrEtIm(2)Pr) towards ZnCl(2) was studied both in solution and in the solid state. Different coordination modes were found depending both on the stoichiometry and on the ligand that was employed. In the 2:1 ligand-to-metal complex [Zn(MIm(2)Pr)(2)], the ligand coordinates in a tridentate, tripodal N,N,O fashion similar to the 2-His-1-carboxylate facial triad. However, the 1:1 ligand-to-metal complexes [Zn(MIm(2)Pr)Cl(H(2)O)] and [Zn(iPrEtIm(2)Pr)Cl] were crystallographically characterized and found to be polymeric in nature. A new, bridging coordination mode of the ligands was observed in both structures comprising N,N-bidentate coordination of the ligand to one zinc atom and O-monodentate coordination to a zinc second atom. A rather unique transformation of pyruvate into oxalate was found with [Zn(MIm(2)Pr)Cl], which resulted in the isolation of the new, oxalato bridged zinc coordination polymer [Zn(2)(MIm(2)Pr)(2)(ox)].6H(2)O, the structure of which was established by X-ray crystal structure determination.
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Affiliation(s)
- Pieter C. A. Bruijnincx
- Chemical Biology and Organic Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Martin Lutz
- Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Johan P. den Breejen
- Chemical Biology and Organic Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Anthony L. Spek
- Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Gerard van Koten
- Chemical Biology and Organic Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Robertus J. M. Klein Gebbink
- Chemical Biology and Organic Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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Yang H, Zhang L, Zhong L, Yang Q, Li C. Enhanced Cooperative Activation Effect in the Hydrolytic Kinetic Resolution of Epoxides on [Co(salen)] Catalysts Confined in Nanocages. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701747] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Yang H, Zhang L, Zhong L, Yang Q, Li C. Enhanced Cooperative Activation Effect in the Hydrolytic Kinetic Resolution of Epoxides on [Co(salen)] Catalysts Confined in Nanocages. Angew Chem Int Ed Engl 2007; 46:6861-5. [PMID: 17668435 DOI: 10.1002/anie.200701747] [Citation(s) in RCA: 184] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hengquan Yang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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Bruijnincx PCA, Lutz M, Spek AL, Hagen WR, Weckhuysen BM, van Koten G, Gebbink RJMK. Modeling the 2-His-1-Carboxylate Facial Triad: Iron−Catecholato Complexes as Structural and Functional Models of the Extradiol Cleaving Dioxygenases. J Am Chem Soc 2007; 129:2275-86. [PMID: 17266307 DOI: 10.1021/ja064816x] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mononuclear iron(II)- and iron(III)-catecholato complexes with three members of a new 3,3-bis(1-alkylimidazol-2-yl)propionate ligand family have been synthesized as models of the active sites of the extradiol cleaving catechol dioxygenases. These enzymes are part of the superfamily of dioxygen-activating mononuclear non-heme iron enzymes that feature the so-called 2-His-1-carboxylate facial triad. The tridentate, tripodal, and monoanionic ligands used in this study include the biologically relevant carboxylate and imidazole donor groups. The structure of the mononuclear iron(III)-tetrachlorocatecholato complex [Fe(L3)(tcc)(H2O)] was determined by single-crystal X-ray diffraction, which shows a facial N,N,O capping mode of the ligand. For the first time, a mononuclear iron complex has been synthesized, which is facially capped by a ligand offering a tridentate Nim,Nim,Ocarb donor set, identical to the endogenous ligands of the 2-His-1-carboxylate facial triad. The iron complexes are five-coordinate in noncoordinating media, and the vacant coordination site is accessible for Lewis bases, e.g., pyridine, or small molecules such as dioxygen. The iron(II)-catecholato complexes react with dioxygen in two steps. In the first reaction the iron(II)-catecholato complexes rapidly convert to the corresponding iron(III) complexes, which then, in a second slow reaction, exhibit both oxidative cleavage and auto-oxidation of the substrate. Extradiol and intradiol cleavage are observed in noncoordinating solvents. The addition of a proton donor results in an increase in extradiol cleavage. The complexes add a new example to the small group of synthetic iron complexes capable of eliciting extradiol-type cleavage and provide more insight into the factors determining the regioselectivity of the enzymes.
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Affiliation(s)
- Pieter C A Bruijnincx
- Organic Chemistry and Catalysis Group, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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Albada HB, Soulimani F, Weckhuysen BM, Liskamp RMJ. Scaffolded amino acids as a close structural mimic of type-3 copper binding sites. Chem Commun (Camb) 2007:4895-7. [DOI: 10.1039/b709400k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Bio-inspired manipulation of catalytic sites via immobilization of metal ion complexes in zeolites. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s0167-2991(07)81029-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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