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Martins LM. Catalytic applications of recent metal poly(1H-pyrazol-1-yl)-methane scorpionates. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Commercial Gold Complexes Supported on Functionalised Carbon Materials as Efficient Catalysts for the Direct Oxidation of Ethane to Acetic Acid. Catalysts 2022. [DOI: 10.3390/catal12020165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The single-pot efficient oxidation of ethane to acetic acid catalysed by Au(I) or Au(III) compounds, chlorotriphenylphosphinegold(I) (1), chlorotrimethylphosphinegold(I) (2), 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidenegold(I) chloride (3), dichloro(2-pyridinecarboxylato)gold(III) (4), homogenous and supported on different carbon materials: activated carbon (AC), multi-walled carbon nanotubes (CNT) and carbon xerogel (CX), oxidised with nitric acid followed by treatment with NaOH (-ox-Na), is reported. The reactions were performed in water/acetonitrile. The materials were selective for the production of acetic acid, with no trace of by-products being detected. The best homogenous catalysts were complexes 2 and 3 which showed the highest ethane conversion and an acetic acid yield of ca. 21%, followed by 4 and 1. The heterogenised materials showed much better activity than the homogenous counterparts, with acetic acid yields up to 41.4% for 4@CNT-ox-Na, and remarkable selectivity (with acetic acid being the only product detected). The heterogenised catalysts with the best results were reused up to five cycles, with no significant loss of activity, and maintaining high selectivity for acetic acid. 4@CNT-ox-Na showed not only the best catalytic activity but also the best stability during the recycling runs.
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Unprecedented Mechanochemical Synthesis and Heterogenization of a C-Scorpionate Au(III) Catalyst for Microwave-Assisted Biomass Valorization. NANOMATERIALS 2022; 12:nano12030362. [PMID: 35159707 PMCID: PMC8839393 DOI: 10.3390/nano12030362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 11/17/2022]
Abstract
The transformation of biomass, a carbon resource presenting a huge potential to produce valuable chemicals, requires the search for sustainable catalytic routes. This work proposes the microwave-assisted oxidation of biomass -derived substrates, such as glycerol and the furfural derivatives 5-(hydroxymethyl)furfural (HMF) and 5-hydroxymethyl-2-furancarboxylic acid (HFCA), using the C-scorpionate dichloro-gold(III) complex [AuCl2(κ2-Tpm)]Cl (Tpm = HCpz3; pz = pyrazol-1-yl) as a catalyst, as prepared and supported on graphene, in solvent-free conditions. The unprecedented application of a mechanochemical procedure (in a planetary ball mill, in solid state) to synthesize a C-scorpionate complex, the [AuCl2(κ2-Tpm)]Cl, is disclosed. The immobilization of [AuCl2(κ2-Tpm)]Cl on graphene was performed using different methods, including some (e.g., microwave irradiation and liquid assisted grinding) for the first time. The structural properties and the performance of the prepared catalytic materials are presented and discussed.
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Librando IL, Mahmoud AG, Carabineiro SAC, Guedes da Silva MFC, Geraldes CFGC, Pombeiro AJL. Synthesis of a Novel Series of Cu(I) Complexes Bearing Alkylated 1,3,5-Triaza-7-phosphaadamantane as Homogeneous and Carbon-Supported Catalysts for the Synthesis of 1- and 2-Substituted-1,2,3-triazoles. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2702. [PMID: 34685140 PMCID: PMC8537716 DOI: 10.3390/nano11102702] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/05/2021] [Accepted: 10/09/2021] [Indexed: 11/28/2022]
Abstract
The N-alkylation of 1,3,5-triaza-7-phosphaadamantane (PTA) with ortho-, meta- and para-substituted nitrobenzyl bromide under mild conditions afforded three hydrophilic PTA ammonium salts, which were used to obtain a new set of seven water-soluble copper(I) complexes. The new compounds were fully characterized and their catalytic activity was investigated for the low power microwave assisted one-pot azide-alkyne cycloaddition reaction in homogeneous aqueous medium to obtain disubstituted 1,2,3-triazoles. The most active catalysts were immobilized on activated carbon (AC), multi-walled carbon nanotubes (CNT), as well as surface functionalized AC and CNT, with the most efficient support being the CNT treated with nitric acid and NaOH. In the presence of the immobilized catalyst, several 1,4-disubstituted-1,2,3-triazoles were obtained from the reaction of terminal alkynes, organic halides and sodium azide in moderate yields up to 80%. Furthermore, the catalyzed reaction of terminal alkynes, formaldehyde and sodium azide afforded 2-hydroxymethyl-2H-1,2,3-triazoles in high yields up to 99%. The immobilized catalyst can be recovered and recycled through simple workup steps and reused up to five consecutive cycles without a marked loss in activity. The described catalytic systems proceed with a broad substrate scope, under microwave irradiation in aqueous medium and according to "click rules".
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Affiliation(s)
- Ivy L. Librando
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (I.L.L.); (S.A.C.C.); (M.F.C.G.d.S.); (A.J.L.P.)
| | - Abdallah G. Mahmoud
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (I.L.L.); (S.A.C.C.); (M.F.C.G.d.S.); (A.J.L.P.)
- Department of Chemistry, Faculty of Science, Helwan University, Ain Helwan, Cairo 11795, Egypt
| | - Sónia A. C. Carabineiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (I.L.L.); (S.A.C.C.); (M.F.C.G.d.S.); (A.J.L.P.)
- LAQV-REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal
| | - M. Fátima C. Guedes da Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (I.L.L.); (S.A.C.C.); (M.F.C.G.d.S.); (A.J.L.P.)
| | - Carlos F. G. C. Geraldes
- Coimbra Chemistry Center, University of Coimbra, Rua Larga Largo D. Dinis, 3004-535 Coimbra, Portugal;
- Department of Life Sciences, Faculty of Science and Technology, Calçada Martim de Freitas, 3000-393 Coimbra, Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (I.L.L.); (S.A.C.C.); (M.F.C.G.d.S.); (A.J.L.P.)
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
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Sutradhar M, Andrade MA, Carabineiro SAC, Martins LMDRS, Guedes da Silva MDFC, Pombeiro AJL. Oxido- and Dioxido-Vanadium(V) Complexes Supported on Carbon Materials: Reusable Catalysts for the Oxidation of Cyclohexane. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1456. [PMID: 34072796 PMCID: PMC8230237 DOI: 10.3390/nano11061456] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/17/2021] [Accepted: 05/28/2021] [Indexed: 11/24/2022]
Abstract
Oxidovanadium(V) and dioxidovanadium(V) compounds, [VO(OEt)L] (1) and [Et3NH][VO2L] (2), were synthesized using an aroylhydrazone Schiff base (5-bromo-2-hydroxybenzylidene)-2-hydroxybenzohydrazide (H2L). They were characterized by elemental analysis, Fourier-transform infrared spectroscopy (FT-IR), (1H and 51V) nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS) and single crystal X-ray diffraction analyses. Both complexes were immobilized on functionalized carbon nanotubes and activated carbon. The catalytic performances of 1 and 2, homogenous and anchored on the supports, were evaluated for the first time towards the MW-assisted peroxidative oxidation (with tert-butylhydroperoxide, TBHP) of cyclohexane under heterogeneous conditions. The immobilization of 1 and 2 on functionalized carbon materials improved the efficiency of catalytic oxidation and allowed the catalyst recyclability with a well-preserved catalytic activity.
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Affiliation(s)
- Manas Sutradhar
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
| | - Marta A. Andrade
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
| | - Sónia A. C. Carabineiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
- Laboratory of Catalysis and Materials (LCM), Associate Laboratory LSRE-LCM, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Largo da Torre, 2829-516 Caparica, Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
| | - Maria de Fátima C. Guedes da Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (M.A.A.); (M.d.F.C.G.d.S.); (A.J.L.P.)
- Research Institute of Chemistry, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
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The Catalytic Activity of Carbon-Supported Cu(I)-Phosphine Complexes for the Microwave-Assisted Synthesis of 1,2,3-Triazoles. Catalysts 2021. [DOI: 10.3390/catal11020185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A set of Cu(I) complexes with 3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo-[3.3.1]nonane (DAPTA) phosphine ligands viz. [CuX(κP-DAPTA)3] (1: X = Br; 2: X = I) and [Cu(μ-X)(κP-DAPTA)2]2 (3: X = Br; 4: X = I) were immobilized on activated carbon (AC) and multi-walled carbon nanotubes (CNT), as well as on these materials after surface functionalization. The immobilized copper(I) complexes have shown favorable catalytic activity for the one-pot, microwave-assisted synthesis of 1,2,3-triazoles via the azide-alkyne cycloaddition reaction (CuAAC). The heterogenized systems with a copper loading of only 1.5–1.6% (w/w relative to carbon), established quantitative conversions after 15 min, at 80 °C, using 0.5 mol% of catalyst loading (relative to benzyl bromide). The most efficient supports concerning heterogenization were CNT treated with nitric acid and NaOH, and involving complexes 2 and 4 (in the same order, 2_CNT-ox-Na and 4_CNT-ox-Na). The immobilized catalysts can be recovered and recycled by simple workup and reused up to four consecutive cycles although with loss of activity.
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Abstract
A cleaner alternative to the current inefficient oxidation of cyclohexane to adipic acid is presented. Direct oxidation of neat cyclohexene by aq. hydrogen peroxide to adipic acid is selectively achieved in good yield (46%), in the presence of the recyclable C-homoscorpionate iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz = pyrazol-1-yl) and microwave irradiation, by a nitrous oxide-free protocol.
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Carlotto S, Casella G, Floreano L, Verdini A, Ribeiro AP, Martins LM, Casarin M. Spin state, electronic structure and bonding on C-scorpionate [Fe(II)Cl2(tpm)] catalyst: An experimental and computational study. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Selective Oxidation of Ethane to Acetic Acid Catalyzed by a C-Scorpionate Iron(II) Complex: A Homogeneous vs. Heterogeneous Comparison. Molecules 2020; 25:molecules25235642. [PMID: 33266077 PMCID: PMC7731253 DOI: 10.3390/molecules25235642] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/24/2020] [Accepted: 11/27/2020] [Indexed: 01/16/2023] Open
Abstract
The direct, one-pot oxidation of ethane to acetic acid was, for the first time, performed using a C-scorpionate complex anchored onto a magnetic core-shell support, the Fe3O4/TiO2/[FeCl2{κ3-HC(pz)3}] composite. This catalytic system, where the magnetic catalyst is easily recovered and reused, is highly selective to the acetic acid synthesis. The performed green metrics calculations highlight the “greeness” of the new ethane oxidation procedure.
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Andrade MA, Mestre AS, Carvalho AP, Pombeiro AJ, Martins LM. The role of nanoporous carbon materials in catalytic cyclohexane oxidation. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.07.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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11
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Duarte TA, Carvalho AP, Martins LM. Styrene oxidation catalyzed by copper(II) C-scorpionates in homogenous medium and immobilized on sucrose derived hydrochars. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.04.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Pakrieva E, Ribeiro AP, Martins LM, Matias IA, Carabineiro SA, Kolobova E, Pombeiro AJ, Figueiredo JL, Pestryakov A. Commercial gold(III) complex supported on functionalized carbon materials as catalyst for cyclohexane hydrocarboxylation. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.05.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Matias IAS, Ribeiro APC, Ferraria AM, do Rego AMB, Martins LMDRS. Catalytic Performance of a Magnetic Core-Shell Iron(II) C-Scorpionate under Unconventional Oxidation Conditions. NANOMATERIALS 2020; 10:nano10112111. [PMID: 33114194 PMCID: PMC7690781 DOI: 10.3390/nano10112111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 10/16/2020] [Accepted: 10/21/2020] [Indexed: 11/16/2022]
Abstract
For the first time, herein is reported the use of a magnetic core-shell support for a C-scorpionate metallic complex. The prepared hybrid material, that consists on the C-scorpionate iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz, pyrazolyl) immobilized at magnetic core-shell particles (Fe3O4/TiO2), was tested as catalyst for the oxidation of secondary alcohols using the model substrate 1-phenylethanol. Moreover, the application of alternative energy sources (e.g., ultrasounds, microwaves, mechanical or thermal) for the peroxidative alcohol oxidation using the magnetic heterogenized iron(II) scorpionate led to different/unusual outcomes that are presented and discussed.
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Affiliation(s)
- Inês A. S. Matias
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;
| | - Ana P. C. Ribeiro
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;
- Correspondence: (A.P.C.R.); (L.M.D.R.S.M.); Tel.: +351-218419389 (L.M.D.R.S.M.)
| | - Ana M. Ferraria
- BSIRG, IBB-Institute for Bioengineering and Biosciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (A.M.F.); (A.M.B.d.R.)
| | - Ana M. Botelho do Rego
- BSIRG, IBB-Institute for Bioengineering and Biosciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal; (A.M.F.); (A.M.B.d.R.)
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal;
- Correspondence: (A.P.C.R.); (L.M.D.R.S.M.); Tel.: +351-218419389 (L.M.D.R.S.M.)
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Synthesis, Structures, Electrochemistry, and Catalytic Activity towards Cyclohexanol Oxidation of Mono-, Di-, and Polynuclear Iron(III) Complexes with 3-Amino-2-Pyrazinecarboxylate. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10082692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The synthesis and characterization of a set of iron(III) complexes, viz. the mononuclear [Fe(L)3] (1) and [NHEt3][Fe(L)2(Cl)2] (2), the dinuclear methoxido-bridged [Fe(L)2(μ-OMe)]2.DMF.1.5MeOH (3), and the heteronuclear Fe(III)/Na(I) two-dimensional coordination polymer [Fe(N3)(μ-L)2(μ-O)1/2(Na)(μ-H2O)1/2]n (4), are reported. Reactions of 3-amino-2-pyrazinecarboxylic acid (HL) with iron(III) chloride under different reaction conditions were studied, and the obtained compounds were characterized by elemental analysis, Fourier Transform Infrared (FT-IR) spectroscopy, and X-ray single-crystal diffraction. Compound 1 is a neutral mononuclear complex, whereas 2 is mono-anionic with its charge being neutralized by triethylammonium cation. Compounds 3 and 4 display a di-methoxido-bridged dinuclear complex and a two-dimensional heterometallic Fe(III)/Na(I) polynuclear coordination polymer, respectively. Compounds 3 and 4 are the first examples of methoxido- and oxido-bridged iron(III) complexes, respectively, with 3-amino-2-pyrazinecarboxylate ligands. The electrochemical study of these compounds reveals a facile single-electron reversible Fe(III)-to-Fe(II) reduction at a positive potential of 0.08V vs. saturated calomel electrode (SCE), which is in line with their ability to act as efficient oxidants and heterogeneous catalysts for the solvent-free microwave-assisted peroxidative oxidation (with tert-butyl hydroperoxide) of cyclohexanol to cyclohexanone (almost quantitative yields after 1 h). Moreover, the catalysts are easily recovered and reused for five consecutive cycles, maintaining a high activity and selectivity.
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Application of molybdenum complexes for the oxidation of cyclohexane in acetonitrile, ionic liquid and supercritical CO2 media, a comparative study. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2017.10.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Sun L, Kong D, Wang F, Luo W, Chen Y, Zhouzhou, Liu J. Amorphous Porous Chromium‐Zirconium Bimetallic Phosphate: Synthesis, Characterization and Application in Liquid Phase Oxidation of Hydrocarbons by Different Oxygen Sources. ChemistrySelect 2020. [DOI: 10.1002/slct.201904073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lei Sun
- College of Chemistry and Molecular EngineeringNanjing Tech University Nanjing 211816 China
- College of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 China
| | - Deyu Kong
- College of Chemistry and Molecular EngineeringNanjing Tech University Nanjing 211816 China
| | - Fang Wang
- College of Chemistry and Molecular EngineeringNanjing Tech University Nanjing 211816 China
| | - Wei Luo
- College of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 China
| | - Yanqiu Chen
- College of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 China
| | - Zhouzhou
- College of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 China
| | - Junhua Liu
- College of Chemistry and Materials ScienceNanjing Normal University Nanjing 210023 China
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Sustainability in Catalytic Cyclohexane Oxidation: The Contribution of Porous Support Materials. Catalysts 2019. [DOI: 10.3390/catal10010002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The development of green and sustainable protocols for synthetic routes is a growing area of research in chemistry worldwide. The development of sustainable processes and products through innovative catalytic materials and technologies, that allow a better use of resources, is undoubtedly a very important issue facing research chemists today. Environmentally and economically advanced catalytic processes for selective alkane oxidations reactions, as is the case of cyclohexane oxidation, are now focused on catalysts’ stability and their reuse, intending to overcome the drawbacks posed by current homogeneous systems. The aim of this short review is to highlight recent contributions in heterogeneous catalysis regarding porous support materials to be applied to cyclohexane oxidation reaction. Different classes of porous materials are covered, from carbon nanomaterials to zeolites, mesoporous silicas, and metal organic frameworks. The role performed by the materials to be used as supports towards an enhancement of the activity/selectivity of the catalytic materials and the ability of recycling and reuse in consecutive catalytic cycles is highlighted.
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Kim A, Ahn S, Yoon T, Notestein JM, Farha OK, Bae Y. Fast Cyclohexane Oxidation Under Mild Reaction Conditions Through a Controlled Creation of Redox‐Active Fe(II/III) Sites in a Metal−Organic Framework. ChemCatChem 2019. [DOI: 10.1002/cctc.201901050] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ah‐Reum Kim
- Department of Chemical and Biomolecular EngineeringYonsei University Seoul 03722 Korea
| | - Sol Ahn
- Department of Chemical and Biological EngineeringNorthwestern University Evanston IL-60208 USA
| | - Tae‐Ung Yoon
- Department of Chemical and Biomolecular EngineeringYonsei University Seoul 03722 Korea
| | - Justin M. Notestein
- Department of Chemical and Biological EngineeringNorthwestern University Evanston IL-60208 USA
| | - Omar K. Farha
- Department of Chemical and Biological EngineeringNorthwestern University Evanston IL-60208 USA
- International Institute of Nanotechnology and Department of ChemistryNorthwestern University Evanston IL-60208 USA
| | - Youn‐Sang Bae
- Department of Chemical and Biomolecular EngineeringYonsei University Seoul 03722 Korea
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Martins NM, Pombeiro AJ, Martins LM. Green oxidation of cyclohexane catalyzed by recyclable magnetic transition-metal silica coated nanoparticles. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.03.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Wang C, Xing N, Feng W, Guo S, Liu M, Xu Y, You Z. New mononuclear dioxidomolybdenum(VI) complexes with hydrazone ligands: Synthesis, crystal structures and catalytic performance. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.11.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Sun L, Liu J, Luo W, Yang Y, Wang F, Weerakkody C, Suib SL. Preparation of amorphous copper - chromium oxides catalysts for selective oxidation of cyclohexane. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.09.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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22
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Martins LMDRS, Wanke R, Silva TFS, Pombeiro AJL, Servin P, Laurent R, Caminade AM. Novel Methinic Functionalized and Dendritic C-Scorpionates. Molecules 2018; 23:E3066. [PMID: 30477102 PMCID: PMC6321409 DOI: 10.3390/molecules23123066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 11/16/2018] [Accepted: 11/18/2018] [Indexed: 11/16/2022] Open
Abstract
The study of chelating ligands is undoubtedly one of the most significant fields of research in chemistry. The present work is directed to the synthesis of new functionalized derivatives of tripodal C-scorpionate compounds. Tris-2,2,2-(1-pyrazolyl)ethanol, HOCH₂C(pz)₃ (1), one of the most important derivatives of hydrotris(pyrazolyl)methane, was used as a building block for the synthesis of new functionalized C-scorpionates, aiming to expand the scope of this unexplored class of compounds. The first dendritic C-scorpionate was successfully prepared and used in the important industrial catalytic reactions, Sonogashira and Heck C-C cross-couplings.
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Affiliation(s)
- Luísa M D R S Martins
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Riccardo Wanke
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Telma F S Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Armando J L Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Paul Servin
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, BP 44099, F-31077 Toulouse CEDEX 4, France.
- LCC-CNRS, Université de Toulouse, CNRS, F-31077 Toulouse, France.
| | - Régis Laurent
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, BP 44099, F-31077 Toulouse CEDEX 4, France.
- LCC-CNRS, Université de Toulouse, CNRS, F-31077 Toulouse, France.
| | - Anne-Marie Caminade
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, BP 44099, F-31077 Toulouse CEDEX 4, France.
- LCC-CNRS, Université de Toulouse, CNRS, F-31077 Toulouse, France.
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Selective Hydrogenation of Benzene to Cyclohexene over Ru-Zn Catalysts: Investigations on the Effect of Zn Content and ZrO2 as the Support and Dispersant. Catalysts 2018. [DOI: 10.3390/catal8110513] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
m-ZrO2 (monoclinic phase) supported Ru-Zn catalysts and unsupported Ru-Zn catalysts were synthesized via the impregnation method and co-precipitation method, respectively. The catalytic activity and selectivity were evaluated for selective hydrogenation of benzene towards cyclohexene formation. Catalyst samples before and after catalytic experiments were thoroughly characterized via X-ray diffraction (XRD), X-ray Fluorescence (XRF), transmission electron microscopy (TEM), N2-sorption, X-ray photoelectron spectroscopy (XPS), H2-temperature programmed reduction (H2-TPR), and a contact angle meter. It was found that Zn mainly existed as ZnO, and its content was increased in Ru-Zn/m-ZrO2 by enhancing the Zn content during the preparation procedure. This results in the amount of formed (Zn(OH)2)3(ZnSO4)(H2O)3 increasing and the catalyst becoming more hydrophilic. Therefore, Ru-Zn/m-ZrO2 with adsorbed benzene would easily move from the oil phase into the aqueous phase, in which the synthesis of cyclohexene took place. The generated cyclohexene then went back into the oil phase, and the further hydrogenation of cyclohexene would be retarded because of the high hydrophilicity of Ru-Zn/m-ZrO2. Hence, the selectivity towards cyclohexene formation over Ru-Zn/m-ZrO2 improved by increasing the Zn content. When the theoretical molar ratio of Zn to Ru was 0.60, the highest cyclohexene yield of 60.9% was obtained over Ru-Zn (0.60)/m-ZrO2. On the other hand, when m-ZrO2 was utilized as the dispersant (i.e., employed as an additive during the reaction), the catalytic activity and selectivity towards cyclohexene synthesis over the unsupported Ru-Zn catalyst was lower than that achieved over the Ru-Zn catalyst with m-ZrO2 as the support. This is mainly because the supported catalyst sample demonstrated superior dispersion of Ru, higher content of (Zn(OH)2)3(ZnSO4)(H2O)3, and a stronger electronic effect between Ru and ZrO2. The Ru-Zn(0.60)/m-ZrO2 was reused 17 times without any regeneration, and no loss of catalytic activity and selectivity towards cyclohexene formation was observed.
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Van-Dúnem V, Carvalho AP, Martins LMDRS, Martins A. Improved Cyclohexane Oxidation Catalyzed by a Heterogenized Iron (II) Complex on Hierarchical Y Zeolite through Surfactant Mediated Technology. ChemCatChem 2018. [DOI: 10.1002/cctc.201800921] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Vanmira Van-Dúnem
- ADEQ, Instituto Superior de Engenharia de Lisboa IPL; Rua Conselheiro Emídio Navarro 1 1959-007 Lisboa Portugal
| | - Ana P. Carvalho
- Centro de Química e Bioquímica and Centro de Química Estrutural, Faculdade de Ciências; Universidade de Lisboa; 1749-016 Lisboa Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Angela Martins
- ADEQ, Instituto Superior de Engenharia de Lisboa IPL; Rua Conselheiro Emídio Navarro 1 1959-007 Lisboa Portugal
- Centro de Química e Bioquímica and Centro de Química Estrutural, Faculdade de Ciências; Universidade de Lisboa; 1749-016 Lisboa Portugal
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Betsy KJ, Nayak C, Lazar A, Krishnan A, Bhattacharyya D, Jha SN, Vinod CP. Selective Oxidation of Cyclohexane to Cyclohexanone Using Chromium Oxide Supported Mesoporous MCM-41 Nanospheres: Probing the Nature of Catalytically Active Chromium Sites. ChemCatChem 2018. [DOI: 10.1002/cctc.201800309] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Kurisingal J. Betsy
- Catalysis and Inorganic Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune- 411008 India
| | - Chandrani Nayak
- Atomic and Molecular Physics Division; Bhabha Atomic Research Centre; Mumbai- 400085 India
| | - Anish Lazar
- Catalysis and Inorganic Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR); Anusandhan Bhawan, 2, Rafi Marg, New Delhi- 110001 India
| | - Athira Krishnan
- Catalysis and Inorganic Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune- 411008 India
| | - Dibyendu Bhattacharyya
- Atomic and Molecular Physics Division; Bhabha Atomic Research Centre; Mumbai- 400085 India
| | - Shambhu N. Jha
- Atomic and Molecular Physics Division; Bhabha Atomic Research Centre; Mumbai- 400085 India
| | - Chathakudath P. Vinod
- Catalysis and Inorganic Chemistry Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road, Pashan Pune- 411008 India
- Academy of Scientific and Innovative Research (AcSIR); Anusandhan Bhawan, 2, Rafi Marg, New Delhi- 110001 India
- Center of Excellence on Surface Science; CSIR-National Chemical Laboratory; Dr Homi Bhabha Road Pune- 411 008 India
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26
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Catalyst-free and solvent-free oxidation of cycloalkanes (C5-C8) with molecular oxygen: Determination of autoxidation temperature and product distribution. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.02.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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27
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Selective Hydrogenation of Benzene to Cyclohexene over Monometallic Ru Catalysts: Investigation of ZnO and ZnSO4 as Reaction Additives as Well as Particle Size Effect. Catalysts 2018. [DOI: 10.3390/catal8050172] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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28
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Highly Active and Selective Supported Rhenium Catalysts for Aerobic Oxidation of n-Hexane and n-Heptane. Catalysts 2018. [DOI: 10.3390/catal8030114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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29
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Tanaka S, Lin J, Kaneti YV, Yusa SI, Jikihara Y, Nakayama T, Zakaria MB, Alshehri AA, You J, Hossain MSA, Yamauchi Y. Gold nanoparticles supported on mesoporous iron oxide for enhanced CO oxidation reaction. NANOSCALE 2018; 10:4779-4785. [PMID: 29469140 DOI: 10.1039/c7nr08895g] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Herein, we report the synthesis of gold (Au)-loaded mesoporous iron oxide (Fe2O3) as a catalyst for both CO and NH3 oxidation. The mesoporous Fe2O3 is firstly prepared using polymeric micelles made of an asymmetric triblock copolymer poly(styrene-b-acrylic acid-b-ethylene glycol) (PS-b-PAA-b-PEG). Owing to its unique porous structure and large surface area (87.0 m2 g-1), the as-prepared mesoporous Fe2O3 can be loaded with a considerably higher amount of Au nanoparticles (Au NPs) (7.9 wt%) compared to the commercial Fe2O3 powder (0.8 wt%). Following the Au loading, the mesoporous Fe2O3 structure is still well-retained and Au NPs with varying sizes of 3-10 nm are dispersed throughout the mesoporous support. When evaluated for CO oxidation, the Au-loaded mesoporous Fe2O3 catalyst shows up to 20% higher CO conversion efficiency compared to the commercial Au/Fe2O3 catalyst, especially at lower temperatures (25-150 °C), suggesting the promising potential of this catalyst for low-temperature CO oxidation. Furthermore, the Au-loaded mesoporous Fe2O3 catalyst also displays a higher catalytic activity for NH3 oxidation with a respectable conversion efficiency of 37.4% compared to the commercial Au/Fe2O3 catalyst (15.6%) at 200 °C. The significant enhancement in the catalytic performance of the Au-loaded mesoporous Fe2O3 catalyst for both CO and NH3 oxidation may be attributed to the improved dispersion of the Au NPs and enhanced diffusivity of the reactant molecules due to the presence of mesopores and a higher oxygen activation rate contributed by the increased number of active sites, respectively.
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Affiliation(s)
- Shunsuke Tanaka
- Australian Institute of Innovative Materials (AIIM), University of Wollongong, North Wollongong, New South Wales 2500, Australia
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Ribeiro APC, Martins LMDRS, Carabineiro SAC, Buijnsters JG, Figueiredo JL, Pombeiro AJL. Heterogenized C-Scorpionate Iron(II) Complex on Nanostructured Carbon Materials as Recyclable Catalysts for Microwave-Assisted Oxidation Reactions. ChemCatChem 2018. [DOI: 10.1002/cctc.201702031] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ana P. C. Ribeiro
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Sónia A. C. Carabineiro
- Laboratório de Catálise e Materiais; Laboratório Associado LSRE-LCM; Faculdade de Engenharia; Universidade do Porto; Rua Dr. Roberto Frias 4200-465 Porto Portugal
| | - Josephus G. Buijnsters
- Department of Precision and Microsystems Engineering; Research Group of Micro and Nano Engineering; Delft University of Technology; Mekelweg 2 2628 CD Delft The Netherlands
| | - José L. Figueiredo
- Laboratório de Catálise e Materiais; Laboratório Associado LSRE-LCM; Faculdade de Engenharia; Universidade do Porto; Rua Dr. Roberto Frias 4200-465 Porto Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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31
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Carabineiro SAC, Martins LMDRS, Pombeiro AJL, Figueiredo JL. Commercial Gold(I) and Gold(III) Compounds Supported on Carbon Materials as Greener Catalysts for the Oxidation of Alkanes and Alcohols. ChemCatChem 2018. [DOI: 10.1002/cctc.201701886] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Sónia A. C. Carabineiro
- Laboratório de Catálise e Materiais, Laboratório Associado LSRE-LCM, Faculdade de Engenharia; Universidade do Porto; Rua Dr. Roberto Frias 4200-465 Porto Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - José L. Figueiredo
- Laboratório de Catálise e Materiais, Laboratório Associado LSRE-LCM, Faculdade de Engenharia; Universidade do Porto; Rua Dr. Roberto Frias 4200-465 Porto Portugal
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32
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New Trendy Magnetic C-Scorpionate Iron Catalyst and Its Performance towards Cyclohexane Oxidation. Catalysts 2018. [DOI: 10.3390/catal8020069] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
For the first time, a magnetic C-scorpionate catalyst was prepared from the iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz = pyrazol-1-yl) and ferrite, using the sustainable mechanochemical synthetic procedure. Its catalytic activity for the cyclohexane oxidation with tert-butyl hydroperoxide (TBHP) was evaluated in different conditions, namely under microwave irradiation and under the effect of an external magnetic field. The use of such magnetic conditions significantly shifted the catalyst alcohol/ketone selectivity, thus revealing a promising, easy new protocol for tuning selectivity in important catalytic processes.
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33
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Shul'pin GB, Vinogradov MM, Shul'pina LS. Oxidative functionalization of C–H compounds induced by the extremely efficient osmium catalysts (a review). Catal Sci Technol 2018. [DOI: 10.1039/c8cy00659h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In recent years, osmium complexes have found applications not only in thecis-hydroxylation of olefins but also very efficient in the oxygenation of C–H compounds (saturated and aromatic hydrocarbons and alcohols) by hydrogen peroxide as well as organic peroxides.
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Affiliation(s)
- Georgiy B. Shul'pin
- Semenov Institute of Chemical Physics
- Russian Academy of Sciences
- Moscow
- Russia
- Plekhanov Russian University of Economics
| | - Mikhail M. Vinogradov
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russia
| | - Lidia S. Shul'pina
- Nesmeyanov Institute of Organoelement Compounds
- Russian Academy of Sciences
- Moscow
- Russia
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34
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Mulahmetovic E, Hargaden GC. Recent advances in the development of magnetic catalysts for the Suzuki reaction. ACTA ACUST UNITED AC 2017. [DOI: 10.1134/s2079978017030037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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35
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Galassi R, Simon OC, Burini A, Tosi G, Conti C, Graiff C, Martins NM, Guedes da Silva MFC, Pombeiro AJ, Martins LM. Copper(I) and copper(II) metallacycles as catalysts for microwave assisted selective oxidation of cyclohexane. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.06.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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36
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Catalytic Performance of Fe(II)-Scorpionate Complexes towards Cyclohexane Oxidation in Organic, Ionic Liquid and/or Supercritical CO2 Media: A Comparative Study. Catalysts 2017. [DOI: 10.3390/catal7080230] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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37
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Wang J, Martins LMDRS, Ribeiro APC, Carabineiro SAC, Figueiredo JL, Pombeiro AJL. Supported C-Scorpionate Vanadium(IV) Complexes as Reusable Catalysts for Xylene Oxidation. Chem Asian J 2017; 12:1915-1919. [PMID: 28477410 DOI: 10.1002/asia.201700499] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 05/03/2017] [Indexed: 02/03/2023]
Affiliation(s)
- Jiawei Wang
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
- Chemical Engineering Departament; Instituto Superior de Engenharia de Lisboa; Instituto Politécnico de Lisboa; Rua Conselheiro Emídio Navarro 1959-007 Lisboa Portugal
| | - Ana P. C. Ribeiro
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Sónia A. C. Carabineiro
- Laboratório de Catálise e Materiais; Laboratório Associado LSRE-LCM, Faculdade de Engenharia; Universidade do Porto; Rua Dr. Roberto Frias 4200-465 Porto Portugal
| | - José L. Figueiredo
- Laboratório de Catálise e Materiais; Laboratório Associado LSRE-LCM, Faculdade de Engenharia; Universidade do Porto; Rua Dr. Roberto Frias 4200-465 Porto Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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38
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Catalytic Performance of MgO-Supported Co Catalyst for the Liquid Phase Oxidation of Cyclohexane with Molecular Oxygen. Catalysts 2017. [DOI: 10.3390/catal7050155] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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39
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Gold Nanoparticles Deposited on Surface Modified Carbon Xerogels as Reusable Catalysts for Cyclohexane C-H Activation in the Presence of CO and Water. Molecules 2017; 22:molecules22040603. [PMID: 28397772 PMCID: PMC6154559 DOI: 10.3390/molecules22040603] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/31/2017] [Accepted: 04/03/2017] [Indexed: 11/21/2022] Open
Abstract
The use of gold as a promotor of alkane hydrocarboxylation is reported for the first time. Cyclohexane hydrocarboxylation to cyclohexanecarboxylic acid (up to 55% yield) with CO, water, and peroxodisulfate in a water/acetonitrile medium at circa 50 °C has been achieved in the presence of gold nanoparticles deposited by a colloidal method on a carbon xerogel in its original form (CX), after oxidation with HNO3 (-ox), or after oxidation with HNO3 and subsequent treatment with NaOH (-ox-Na). Au/CX-ox-Na behaves as re-usable catalyst maintaining its initial activity and selectivity for at least seven consecutive cycles. Green metric values of atom economy or carbon efficiency also attest to the improvement brought by this novel catalytic system to the hydrocarboxylation of cyclohexane.
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40
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Nakamizu A, Kasai T, Nakazawa J, Hikichi S. Immobilization of a Boron Center-Functionalized Scorpionate Ligand on Mesoporous Silica Supports for Heterogeneous Tp-Based Catalysts. ACS OMEGA 2017; 2:1025-1030. [PMID: 31457483 PMCID: PMC6641073 DOI: 10.1021/acsomega.7b00022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 03/06/2017] [Indexed: 06/10/2023]
Abstract
To develop novel immobilized metallocomplex catalysts, allyltris(3-trifluoromethylpyrazol-1-yl)borate (allyl-TpCF3) was synthesized. A boron-attached allyl group reacts with thiol to afford the desired mesoporous silica-immobilized TpCF3. Cobalt(II) is an efficient probe for estimating the structures of the immobilized metallocomplexes. The structures of the formed cobalt(II) complexes and their catalytic activity depended on the density of the organic thiol groups and on the state of the remaining sulfur donors on the supports.
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41
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Liquid phase oxidation of xylenes catalyzed by the tripodal C-scorpionate iron(II) complex [FeCl2{κ3-HC(pz)3}]. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.10.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Dias Ribeiro de Sousa Martins LM, Carabineiro SAC, Wang J, Rocha BGM, Maldonado-Hódar FJ, Latourrette de Oliveira Pombeiro AJ. Supported Gold Nanoparticles as Reusable Catalysts for Oxidation Reactions of Industrial Significance. ChemCatChem 2017. [DOI: 10.1002/cctc.201601442] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Luísa Margarida Dias Ribeiro de Sousa Martins
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
- Chemical Engineering Departament; Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa; Rua Conselheiro Emídio Navarro 1959-007 Lisboa Portugal
| | - Sónia Alexandra Correia Carabineiro
- Laboratório de Catálise e Materiais, Laboratório Associado LSRE-LCM, Faculdade de Engenharia; Universidade do Porto; Rua Dr. Roberto Frias 4200-465 Porto Portugal
| | - Jiawei Wang
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Bruno Gonçalo Martins Rocha
- Centro de Química Estrutural, Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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44
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Shul’pin GB, Nesterov DS, Shul’pina LS, Pombeiro AJ. A hydroperoxo-rebound mechanism of alkane oxidation with hydrogen peroxide catalyzed by binuclear manganese(IV) complex in the presence of an acid with involvement of atmospheric dioxygen. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.04.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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45
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Stereoselective Alkane Oxidation with meta-Chloroperoxybenzoic Acid (MCPBA) Catalyzed by Organometallic Cobalt Complexes. Molecules 2016; 21:molecules21111593. [PMID: 27879680 PMCID: PMC6273550 DOI: 10.3390/molecules21111593] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 11/15/2016] [Accepted: 11/16/2016] [Indexed: 01/21/2023] Open
Abstract
Cobalt pi-complexes, previously described in the literature and specially synthesized and characterized in this work, were used as catalysts in homogeneous oxidation of organic compounds with peroxides. These complexes contain pi-butadienyl and pi-cyclopentadienyl ligands: [(tetramethylcyclobutadiene)(benzene)cobalt] hexafluorophosphate, [(C4Me4)Co(C6H6)]PF6 (1); diiodo(carbonyl)(pentamethylcyclopentadienyl)cobalt, Cp*Co(CO)I2 (2); diiodo(carbonyl)(cyclopentadienyl)cobalt, CpCo(CO)I2 (3); (tetramethylcyclobutadiene)(dicarbonyl)(iodo)cobalt, (C4Me4)Co(CO)2I (4); [(tetramethylcyclobutadiene)(acetonitrile)(2,2′-bipyridyl)cobalt] hexafluorophosphate, [(C4Me4)Co(bipy)(MeCN)]PF6 (5); bis[dicarbonyl(B-cyclohexylborole)]cobalt, [(C4H4BCy)Co(CO)2]2 (6); [(pentamethylcyclopentadienyl)(iodo)(1,10-phenanthroline)cobalt] hexafluorophosphate, [Cp*Co(phen)I]PF6 (7); diiodo(cyclopentadienyl)cobalt, [CpCoI2]2 (8); [(cyclopentadienyl)(iodo)(2,2′-bipyridyl)cobalt] hexafluorophosphate, [CpCo(bipy)I]PF6 (9); and [(pentamethylcyclopentadienyl)(iodo)(2,2′-bipyridyl)cobalt] hexafluorophosphate, [Cp*Co(bipy)I]PF6 (10). Complexes 1 and 2 catalyze very efficient and stereoselective oxygenation of tertiary C–H bonds in isomeric dimethylcyclohexanes with MCBA: cyclohexanols are produced in 39 and 53% yields and with the trans/cis ratio (of isomers with mutual trans- or cis-configuration of two methyl groups) 0.05 and 0.06, respectively. Addition of nitric acid as co-catalyst dramatically enhances both the yield of oxygenates and stereoselectivity parameter. In contrast to compounds 1 and 2, complexes 9 and 10 turned out to be very poor catalysts (the yields of oxygenates in the reaction with cis-1,2-dimethylcyclohexane were only 5%–7% and trans/cis ratio 0.8 indicated that the oxidation is not stereoselective). The chromatograms of the reaction mixture obtained before and after reduction with PPh3 are very similar, which testifies that alkyl hydroperoxides are not formed in this oxidation. It can be thus concluded that the interaction of the alkanes with MCPBA occurs without the formation of free radicals. The complexes catalyze oxidation of alcohols with tert-butylhydroperoxide (TBHP). For example, tert-BuOOH efficiently oxidizes 1-phenylethanol to acetophenone in 98% yield if compound 1 is used as a catalyst.
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Martins LMDRS, Ribeiro APC, Carabineiro SAC, Figueiredo JL, Pombeiro AJL. Highly efficient and reusable CNT supported iron(ii) catalyst for microwave assisted alcohol oxidation. Dalton Trans 2016; 45:6816-9. [PMID: 27007743 DOI: 10.1039/c6dt00514d] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The highly efficient eco-friendly synthesis of ketones (yields over 99%) from secondary alcohols is achieved by combination of [FeCl2{η(3)-HC(pz)3}] (pz = pyrazol-1-yl) supported on functionalized multi-walled carbon nanotubes and microwave irradiation, in a solvent-free medium. The carbon homoscorpionate iron(ii) complex is the first one of this class to be used as catalyst for the oxidation of alcohols.
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Affiliation(s)
- L M D R S Martins
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal and Chemical Engineering Department, Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, Rua Conselheiro Emídio Navarro, 1959-007 Lisboa, Portugal.
| | - A P C Ribeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - S A C Carabineiro
- LCM - Laboratory of Catalysis and Materials, Associate Laboratory LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - J L Figueiredo
- LCM - Laboratory of Catalysis and Materials, Associate Laboratory LSRE-LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - A J L Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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Sutradhar M, Martins LMDRS, Carabineiro SAC, Guedes da Silva MFC, Buijnsters JG, Figueiredo JL, Pombeiro AJL. Oxidovanadium(V) Complexes Anchored on Carbon Materials as Catalysts for the Oxidation of 1-Phenylethanol. ChemCatChem 2016. [DOI: 10.1002/cctc.201600316] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Manas Sutradhar
- Centro de Química Estrutural, Complexo I; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Luísa M. D. R. S. Martins
- Centro de Química Estrutural, Complexo I; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
- Chemical Engineering Department; Instituto Superior de Engenharia de Lisboa; Instituto Politécnico de Lisboa; R. Conselheiro Emídio Navarro 1959-007 Lisboa Portugal
| | - Sónia A. C. Carabineiro
- Laboratório de Catálise e Materiais, Laboratório Associado LSRE-LCM; Departamento de Engenharia Química; Faculdade de Engenharia; Universidade do Porto; 4200-465 Porto Portugal
| | - M. Fátima C. Guedes da Silva
- Centro de Química Estrutural, Complexo I; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Josephus G. Buijnsters
- Department of Precision and Microsystems Engineering; Research Group of Micro and Nano Engineering; Delft University of Technology; Mekelweg 2 2628 CD Delft The Netherlands
| | - José L. Figueiredo
- Laboratório de Catálise e Materiais, Laboratório Associado LSRE-LCM; Departamento de Engenharia Química; Faculdade de Engenharia; Universidade do Porto; 4200-465 Porto Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural, Complexo I; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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Rapid Synthesis of a Functional Resin‐Supported Scorpionate and Its Copper(I, II), Rhodium(I), and Chromium(III) Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Martins LMDRS, Pombeiro AJL. Water-Soluble C-Scorpionate Complexes - Catalytic and Biological Applications. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600053] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Luísa M. D. R. S. Martins
- Chemical Engineering Department; Instituto Superior de Engenharia de Lisboa; R. Conselheiro Emídio Navarro 1959-007 Lisboa Portugal
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Armando J. L. Pombeiro
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
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