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Ruggiu A, Carvalho AP, Rombi E, Martins A, Rocha J, Parpot P, Neves IC, Cutrufello MG. Y and ZSM-5 Hierarchical Zeolites Prepared Using a Surfactant-Mediated Strategy: Effect of the Treatment Conditions. MATERIALS (BASEL, SWITZERLAND) 2024; 17:4401. [PMID: 39274788 DOI: 10.3390/ma17174401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2024] [Revised: 08/30/2024] [Accepted: 09/02/2024] [Indexed: 09/16/2024]
Abstract
Diffusional limitations associated with zeolite microporous systems can be overcome by developing hierarchical zeolites, i.e., materials with a micro- and mesoporous framework. In this work, Y and ZSM-5 zeolites were modified using a surfactant-mediated hydrothermal alkaline method, with NaOH and cetyltrimethylammonium bromide (CTAB). For Y zeolite, after a mild acidic pretreatment, the effect of the NaOH+CTAB treatment time was investigated. For ZSM-5 zeolite, different concentrations of the base and acid solutions were tested in the two-step pretreatment preceding the hydrothermal treatment. The properties of the materials were studied with different physical-chemical techniques. Hierarchical Y zeolites were characterized by 3.3-5 nm pores formed during the alkaline treatment through the structure reconstruction around the surfactant aggregates. The effectiveness of the NaOH+CTAB treatment was highly dependent on the duration. For intermediate treatment times (6-12 h), both smaller and larger mesopores were also obtained. Hierarchical ZSM-5 zeolites showed a disordered mesoporosity, mainly resulting from the pretreatment rather than from the subsequent hydrothermal treatment. High mesoporosity was obtained when the concentration of the pretreating base solution was sufficiently high and that of the acid one was not excessive. Hierarchical materials can be obtained for both zeolite structures, but the pretreatment and treatment conditions must be tailored to the starting zeolite and the desired type of mesoporosity.
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Affiliation(s)
- Andrea Ruggiu
- Department of Chemical and Geological Sciences, University of Cagliari, Complesso Universitario di Monserrato, S.S. 554, 09042 Monserrato, CA, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giusti 9, 50121 Florence, Italy
| | - Ana Paula Carvalho
- Centro de Química Estrutural, Institute of Molecular Sciences, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Departamento de Química e Bioquímica, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Elisabetta Rombi
- Department of Chemical and Geological Sciences, University of Cagliari, Complesso Universitario di Monserrato, S.S. 554, 09042 Monserrato, CA, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giusti 9, 50121 Florence, Italy
| | - Angela Martins
- Centro de Química Estrutural, Institute of Molecular Sciences, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
- Departamento de Engenharia Química, Instituto Superior de Engenharia de Lisboa, Instituto Politécnico de Lisboa, Rua Conselheiro Emídio Navarro, 1959-007 Lisboa, Portugal
| | - João Rocha
- Departamento de Química and CICECO, Universidade de Aveiro, 3810-193 Aveiro, Portugal
| | - Pier Parpot
- CQUM-Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Isabel C Neves
- CQUM-Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Maria Giorgia Cutrufello
- Department of Chemical and Geological Sciences, University of Cagliari, Complesso Universitario di Monserrato, S.S. 554, 09042 Monserrato, CA, Italy
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via Giusti 9, 50121 Florence, Italy
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Martins A, Amaro B, Santos MSCS, Nunes N, Elvas-Leitão R, Carvalho AP. Hierarchical Zeolites Prepared Using a Surfactant-Mediated Strategy: ZSM-5 vs. Y as Catalysts for Friedel-Crafts Acylation Reaction. Molecules 2024; 29:517. [PMID: 38276595 PMCID: PMC10818646 DOI: 10.3390/molecules29020517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024] Open
Abstract
Hierarchical ZSM5 and Y zeolites were prepared through a surfactant-mediated strategy with NH4OH changing the duration of the treatment and the amount of CTAB surfactant and taking as reference multiples of the critical micellar concentration (CMC). The materials were characterized using powder X-ray diffraction, N2 adsorption isotherms at -196 °C, and SEM and TEM microscopy. The catalytic performance was evaluated in Friedel-Crafts acylation of furan with acetic anhydride at 80 °C. The alkaline surfactant-mediated treatment had different effects on the two zeolites. For ZSM5, the CTAB molecular aggregates can hardly diffuse inside the medium-size pores, leading mainly to intercrystalline mesoporosity and increased external surface area, with no positive catalytic impact. On the other hand, for large-pore Y zeolite, the CTAB molecular aggregates can easily diffuse and promote the rearrangement of crystal units around micelles, causing the enlargement of the pores, i.e., intracrystalline porosity. The optimized Y-based sample, treated for 12 h with a CTAB amount 32 times the CMC, shows an increase in product yield and rate constant that was not observed when a higher amount of surfactant was added. The reuse of spent catalysts upon thermal treatment at 400 °C shows a regeneration efficiency around 90%, showing good potentialities for the modified catalysts.
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Affiliation(s)
- Angela Martins
- Departamento de Engenharia Química, Instituto Superior de Engenharia de Lisboa, IPL, R. Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal; (B.A.); (R.E.-L.)
- Centro de Química Estrutural, Faculdade de Ciências, Institute of Molecular Sciences, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;
| | - Beatriz Amaro
- Departamento de Engenharia Química, Instituto Superior de Engenharia de Lisboa, IPL, R. Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal; (B.A.); (R.E.-L.)
| | - M. Soledade C. S. Santos
- Centro de Química Estrutural, Faculdade de Ciências, Institute of Molecular Sciences, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;
- Departamento de Química e Bioquímica, Faculdade de Ciências Universidade de Lisboa, Ed.C8, Campo Grande, 1749-016 Lisboa, Portugal
| | - Nelson Nunes
- Departamento de Engenharia Química, Instituto Superior de Engenharia de Lisboa, IPL, R. Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal; (B.A.); (R.E.-L.)
- Centro de Química Estrutural, Faculdade de Ciências, Institute of Molecular Sciences, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;
| | - Ruben Elvas-Leitão
- Departamento de Engenharia Química, Instituto Superior de Engenharia de Lisboa, IPL, R. Conselheiro Emídio Navarro, 1, 1959-007 Lisboa, Portugal; (B.A.); (R.E.-L.)
- Centro de Química Estrutural, Faculdade de Ciências, Institute of Molecular Sciences, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;
| | - Ana P. Carvalho
- Centro de Química Estrutural, Faculdade de Ciências, Institute of Molecular Sciences, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;
- Departamento de Química e Bioquímica, Faculdade de Ciências Universidade de Lisboa, Ed.C8, Campo Grande, 1749-016 Lisboa, Portugal
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Wang H, Zhang X, Li G. Constructing optimally hierarchical HY zeolite for the synthesis of high-energy-density tricyclic hydrocarbon fuel. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2022.112871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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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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Synthesis and VOCs adsorption performance of surfactant-templated USY zeolites with controllable mesopores. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Novel Copper(II) Complexes with Dipinodiazafluorene Ligands: Synthesis, Structure, Magnetic and Catalytic Properties. Molecules 2022; 27:molecules27134072. [PMID: 35807331 PMCID: PMC9268630 DOI: 10.3390/molecules27134072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 02/06/2023] Open
Abstract
The reactions of CuX2 (X = Cl, Br) with dipinodiazafluorenes yielded four new complexes [CuX2L1]2 (X = Cl (1), Br (2), L1 = (1R,3R,8R,10R)-2,2,9,9-Tetramethyl-3,4,7,8,9,10-hexahydro-1H-1,3:8,10-dimethanocyclopenta [1,2-b:5,4-b’]diquinolin-12(2H)-one) and [(CuX2)2L2]n (X = Cl (3), Br (4), L2 = (1R,3R,8R,10R,1’R,3’R,8’R,10’R)-2,2,2’,2’,9,9,9’,9’-Octamethyl-1,1’,2,2’,3,3’,4,4’,7,7’,8,8’,9,9’,10,10’-hexadecahydro-1,3:1’,3’:8,10:8’,10’-tetramethano-12,12’-bi(cyclopenta [1,2-b:5,4-b’]diquinolinylidene). The complexes were characterized by IR and EPR spectroscopy, HR-ESI-MS and elemental analysis. The crystal structures of compounds 1, 2 and 4 were determined by X-ray diffraction (XRD) analysis. Complexes 1–2 have a monomeric structure, while complex 4 has a polymeric structure due to additional coordinating N,N sites in L2. All complexes contain a binuclear fragment {Cu2(μ-X)2×2} (X = Cl, Br) in their structures. Each copper atom has a distorted square-pyramidal coordination environment formed by two nitrogen atoms and three halogen atoms. The Cu-Nax distance is elongated compared to Cu-Neq. The EPR spectra of compounds 1–4 in CH3CN confirm their paramagnetic nature due to the d9 electronic configuration of the copper(II) ion. The magnetic properties of all compounds were studied by the method of static magnetic susceptibility. For complexes 1 and 2, the effective magnetic moments are µeff ≈ 1.87 and 1.83 µB (per each Cu2+ ion), respectively, in the temperature range 50–300 K, which are close to the theoretical spin value (1.73 µB). Ferromagnetic exchange interactions between Cu(II) ions inside {Cu2(μ-X)2X2} (X = Cl, Br) dimers (J/kB ≈ 25 and 31 K for 1 and 2, respectively) or between dimers (θ′ ≈ 0.30 and 0.47 K for 1 and 2, respectively) were found at low temperatures. For compounds 3 and 4, the magnetic susceptibility is well described by the Curie–Weiss law in the temperature range 1.77–300 K with µeff ≈ 1.72 and 1.70 µB for 3 and 4, respectively, and weak antiferromagnetic interactions (θ ≈ −0.4 K for 3 and −0.65 K for 4). Complexes 1–4 exhibit high catalytic activity in the oxidation of alkanes and alcohols with peroxides. The maximum yield of cyclohexane oxidation products reached 50% (complex 3). Based on the data on the study of regio- and bond-selectivity, it was concluded that hydroxyl radicals play a decisive role in the oxidation reaction. The initial products in reactions with alkanes are alkyl hydroperoxides.
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Abstract
Catalytic oxidation is a key technology for the conversion of petroleum-based feedstocks into useful chemicals (e.g., adipic acid, caprolactam, glycols, acrylates, and vinyl acetate) since this chemical transformation is always involved in synthesis processes. Millions of tons of these compounds are annually produced worldwide and find applications in all areas of chemical industries, ranging from pharmaceutical to large-scale commodities. The traditional industrial methods to produce large amounts of those compounds involve over-stoichiometric quantities of toxic inorganic reactants and homogeneous catalysts that operate at high temperature, originating large amounts of effluents, often leading to expensive downstream processes, along with nonrecovery of valuable catalysts that are loss within the reactant effluent. Due to the increasingly stringent environmental legislation nowadays, there is considerable pressure to replace these antiquate technologies, focusing on heterogeneous catalysts that can operate under mild reactions conditions, easily recovered, and reused. Parallelly, recent advances in the synthesis and characterization of metal complexes and metal clusters on support surfaces have brought new insights to catalysis and highlight ways to systematic catalysts design. This review aims to provide a comprehensive bibliographic examination over the last 10 years on the development of heterogeneous catalysts, i.e., organometallic complexes or metal clusters immobilized in distinct inorganic supports such as zeolites, hierarchical zeolites, silicas, and clays. The methodologies used to prepare and/or modify the supports are critically reviewed, as well as the methods used for the immobilization of the active species. The applications of the heterogenized catalysts are presented, and some case-studies are discussed in detail.
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The selective deposition of Fe species inside ZSM-5 for the oxidation of cyclohexane to cyclohexanone. Sci China Chem 2021. [DOI: 10.1007/s11426-020-9968-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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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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Shul'pina LS, Vinogradov MM, Kozlov YN, Nelyubina YV, Ikonnikov NS, Shul'pin GB. Copper complexes with 1,10-phenanthrolines as efficient catalysts for oxidation of alkanes by hydrogen peroxide. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119889] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Kerstens D, Smeyers B, Van Waeyenberg J, Zhang Q, Yu J, Sels BF. State of the Art and Perspectives of Hierarchical Zeolites: Practical Overview of Synthesis Methods and Use in Catalysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2004690. [PMID: 32969083 DOI: 10.1002/adma.202004690] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/18/2020] [Indexed: 06/11/2023]
Abstract
Microporous zeolites have proven to be of great importance in many chemical processes. Yet, they often suffer from diffusion limitations causing inefficient use of the available catalytically active sites. To address this problem, hierarchical zeolites have been developed, which extensively improve the catalytic performance. There is a multitude of recent literature describing synthesis of and catalysis with these hierarchical zeolites. This review attempts to organize and overview this literature (of the last 5 years), with emphasis on the most important advances with regard to synthesis and application of such zeolites. Special attention is paid to the most common and important 10- and 12-membered ring zeolites (MTT, TON, FER, MFI, MOR, FAU, and *BEA). In contrast to previous reviews, the research per zeolite topology is brought together and discussed here. This allows the reader to instantly find the best synthesis method in accordance to the desired zeolite properties. A summarizing graph is made available to enable the reader to select suitable synthesis procedures based on zeolite acidity and mesoporosity, the two most important tunable properties.
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Affiliation(s)
- Dorien Kerstens
- Centre for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan, 200f, 3001, Leuven, Belgium
| | - Brent Smeyers
- Centre for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan, 200f, 3001, Leuven, Belgium
| | - Jonathan Van Waeyenberg
- Centre for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan, 200f, 3001, Leuven, Belgium
| | - Qiang Zhang
- State Key Laboratory of Inorganic Synthesis and Preperative Chemistry College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preperative Chemistry College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Bert F Sels
- Centre for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan, 200f, 3001, Leuven, Belgium
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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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Liu W, Xie Z, Wang C, Zhan S, Wu S. Effects of metal centers of complexes supported by S,S′‐bis(2‐pyridylmethyl)‐1,2‐thioethane on catalytic activities for electrochemical‐ and photochemical‐driven hydrogen production. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5776] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Wei‐Xia Liu
- College of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
| | - Zhen‐Lang Xie
- College of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
| | - Chun‐Li Wang
- College of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
| | - Shu‐Zhong Zhan
- College of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
| | - Song‐Ping Wu
- College of Chemistry and Chemical EngineeringSouth China University of Technology Guangzhou 510640 China
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Ottaviani D, Van-Dúnem V, Carvalho AP, Martins A, Martins LM. Eco-friendly cyclohexane oxidation by a V-scorpionate complex immobilized at hierarchical MOR zeolite. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.09.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Salam N, Paul P, Ghosh S, Mandi U, Khan A, Alam SM, Das D, Manirul Islam S. AgNPs encapsulated by an amine-functionalized polymer nanocatalyst for CO2fixation as a carboxylic acid and the oxidation of cyclohexane under ambient conditions. NEW J CHEM 2020. [DOI: 10.1039/c9nj05865f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel catalyst comprising Ag NPs grafted to a porous polystyrene material was synthesized for the production of valuable propiolic acid derivativesviaCO2(1 atm) incorporation, and the oxidation of cyclohexane under ambient reaction conditions.
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Affiliation(s)
- Noor Salam
- Department of Chemistry
- University of Kalyani
- Kalyani
- India
- Department of Chemistry
| | - Priyanka Paul
- Department of Chemistry
- University of Kalyani
- Kalyani
- India
- Department of Chemistry
| | | | - Usha Mandi
- Department of Chemistry
- Jogamaya Devi College
- Kolkata
- India
| | - Aslam Khan
- King Abdullah Institute for Nanotechnology
- King Saud University
- Riyadh
- Saudi Arabia
| | | | - Debasis Das
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
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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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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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