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Maisterra M, Atienza-Martínez M, Hablich K, Moreira R, Martínez-Merino V, Gandía LM, Cornejo A, Bimbela F. Innovative flow-through reaction system for the sustainable production of phenolic monomers from lignocellulose catalyzed by supported Mo 2C. ChemSusChem 2024; 17:e202301591. [PMID: 38179896 DOI: 10.1002/cssc.202301591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/19/2023] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
Molybdenum carbide supported on activated carbon (β-Mo2C/AC) has been tested as catalyst in the reductive catalytic fractionation (RCF) of lignocellulosic biomass both in batch and in Flow-Through (FT) reaction systems. High phenolic monomer yields (34 wt.%) and selectivity to monomers with reduced side alkyl chains (up to 80 wt.%) could be achieved in batch in the presence of hydrogen. FT-RCF were made with no hydrogen feed, thus via transfer hydrogenation from ethanol. Similar selectivity could be attained in FT-RCF using high catalyst/biomass ratios (0.6) and high molybdenum loading (35 wt.%) in the catalyst, although selectivity decreased with lower catalyst/biomass ratios or molybdenum contents. Regardless of these parameters, high delignification of the lignocellulosic biomass and similar monomer yields were observed in the FT mode (13-15 wt.%) while preserving the holocellulose fractions in the delignified pulp. FT-RCF system outperforms the batch reaction mode in the absence of hydrogen, both in terms of activity and selectivity to reduced monomers that is attributed to the two-step non-equilibrium processes and the removal of diffusional limitations that occur in the FT mode. Even though some molybdenum leaching was detected, the catalytic performance could be maintained with negligible loss of activity or selectivity for 15 consecutive runs.
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Affiliation(s)
- Maitane Maisterra
- Institute for Advanced Material and Mathematics (INAMAT2) -, Department of Sciences, Universidad Pública de Navarra, Ed. 'Los Acebos', Campus de Arrosadia S/N, 31006, Pamplona, Spain
| | - María Atienza-Martínez
- Institute for Advanced Material and Mathematics (INAMAT2) -, Department of Sciences, Universidad Pública de Navarra, Ed. 'Los Acebos', Campus de Arrosadia S/N, 31006, Pamplona, Spain
| | - Karina Hablich
- Institute for Advanced Material and Mathematics (INAMAT2) -, Department of Sciences, Universidad Pública de Navarra, Ed. 'Los Acebos', Campus de Arrosadia S/N, 31006, Pamplona, Spain
| | - Rui Moreira
- CIEPQPF, FCTUC, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima, Pólo II - Pinhal de Marrocos, Coimbra, Portugal
| | - Víctor Martínez-Merino
- Institute for Advanced Material and Mathematics (INAMAT2) -, Department of Sciences, Universidad Pública de Navarra, Ed. 'Los Acebos', Campus de Arrosadia S/N, 31006, Pamplona, Spain
| | - Luis M Gandía
- Institute for Advanced Material and Mathematics (INAMAT2) -, Department of Sciences, Universidad Pública de Navarra, Ed. 'Los Acebos', Campus de Arrosadia S/N, 31006, Pamplona, Spain
| | - Alfonso Cornejo
- Institute for Advanced Material and Mathematics (INAMAT2) -, Department of Sciences, Universidad Pública de Navarra, Ed. 'Los Acebos', Campus de Arrosadia S/N, 31006, Pamplona, Spain
| | - Fernando Bimbela
- Institute for Advanced Material and Mathematics (INAMAT2) -, Department of Sciences, Universidad Pública de Navarra, Ed. 'Los Acebos', Campus de Arrosadia S/N, 31006, Pamplona, Spain
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Cornejo A, Bimbela F, Moreira R, Hablich K, García-Yoldi Í, Maisterra M, Portugal A, Gandía LM, Martínez-Merino V. Production of Aromatic Compounds by Catalytic Depolymerization of Technical and Downstream Biorefinery Lignins. Biomolecules 2020; 10:E1338. [PMID: 32962141 PMCID: PMC7564559 DOI: 10.3390/biom10091338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/19/2020] [Accepted: 09/11/2020] [Indexed: 11/16/2022] Open
Abstract
Lignocellulosic materials are promising alternatives to non-renewable fossil sources when producing aromatic compounds. Lignins from Populus salicaceae. Pinus radiata and Pinus pinaster from industrial wastes and biorefinery effluents were isolated and characterized. Lignin was depolymerized using homogenous (NaOH) and heterogeneous (Ni-, Cu- or Ni-Cu-hydrotalcites) base catalysis and catalytic hydrogenolysis using Ru/C. When homogeneous base catalyzed depolymerization (BCD) and Ru/C hydrogenolysis were combined on poplar lignin, the aromatics amount was ca. 11 wt.%. Monomer distributions changed depending on the feedstock and the reaction conditions. Aqueous NaOH produced cleavage of the alkyl side chain that was preserved when using modified hydrotalcite catalysts or Ru/C-catalyzed hydrogenolysis in ethanol. Depolymerization using hydrotalcite catalysts in ethanol produced monomers bearing carbonyl groups on the alkyl side chain. The analysis of the reaction mixtures was done by size exclusion chromatography (SEC) and diffusion ordered nuclear magnetic resonance spectroscopy (DOSY NMR). 31P NMR and heteronuclear single quantum coherence spectroscopy (HSQC) were also used in this study. The content in poly-(hydroxy)-aromatic ethers in the reaction mixtures decreased upon thermal treatments in ethanol. It was concluded that thermo-solvolysis is key in lignin depolymerization, and that the synergistic effect of Ni and Cu provided monomers with oxidized alkyl side chains.
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Affiliation(s)
- Alfonso Cornejo
- Institute for Advanced Materials and Mathematics (InaMat2) and Department of Sciences, Universidad Pública de Navarra, E31006 Pamplona, Spain; (K.H.); (Í.G.-Y.); (M.M.); (L.M.G.); (V.M.-M.)
| | - Fernando Bimbela
- Institute for Advanced Materials and Mathematics (InaMat2) and Department of Sciences, Universidad Pública de Navarra, E31006 Pamplona, Spain; (K.H.); (Í.G.-Y.); (M.M.); (L.M.G.); (V.M.-M.)
| | - Rui Moreira
- CIEPQPF, FCTUC, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima, Pólo II—Pinhal de Marrocos, 3030-790 Coimbra, Portugal; (R.M.); (A.P.)
| | - Karina Hablich
- Institute for Advanced Materials and Mathematics (InaMat2) and Department of Sciences, Universidad Pública de Navarra, E31006 Pamplona, Spain; (K.H.); (Í.G.-Y.); (M.M.); (L.M.G.); (V.M.-M.)
| | - Íñigo García-Yoldi
- Institute for Advanced Materials and Mathematics (InaMat2) and Department of Sciences, Universidad Pública de Navarra, E31006 Pamplona, Spain; (K.H.); (Í.G.-Y.); (M.M.); (L.M.G.); (V.M.-M.)
| | - Maitane Maisterra
- Institute for Advanced Materials and Mathematics (InaMat2) and Department of Sciences, Universidad Pública de Navarra, E31006 Pamplona, Spain; (K.H.); (Í.G.-Y.); (M.M.); (L.M.G.); (V.M.-M.)
| | - António Portugal
- CIEPQPF, FCTUC, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima, Pólo II—Pinhal de Marrocos, 3030-790 Coimbra, Portugal; (R.M.); (A.P.)
| | - Luis M. Gandía
- Institute for Advanced Materials and Mathematics (InaMat2) and Department of Sciences, Universidad Pública de Navarra, E31006 Pamplona, Spain; (K.H.); (Í.G.-Y.); (M.M.); (L.M.G.); (V.M.-M.)
| | - Víctor Martínez-Merino
- Institute for Advanced Materials and Mathematics (InaMat2) and Department of Sciences, Universidad Pública de Navarra, E31006 Pamplona, Spain; (K.H.); (Í.G.-Y.); (M.M.); (L.M.G.); (V.M.-M.)
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Maisterra M, Castro MÁ, Muñoz-Centeno LM, Calhelha RC, Ferreira IC, García PA. Cytotoxic Terphenyl Neolignans from Fungus Terana coerulea: New Natural Corticins D and E. and Revised Structure for Corticin A. Nat Prod Commun 2017; 12:695-698. [PMID: 30496678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
The cobalt crust fungus Terana coerulea (Phanerochaetaceae family) was selected for a bio-guided study after an ethnobotanical survey at the Irati's Forest (Navarra, Spain) for its local use as antibiotic. Six extracts of increasing polarity, from hexane to hot water, were obtained from powdered dry fungi and tested for cytotoxicity against four human tumour cell lines and one non-tumour primary cell culture. From the most cytotoxic, EtOAc extract, we isolated and identified three terphenyl neolignans: two of them new natural products, named corticins D and E, and one previously described as corticin A, whose earlier structure has been revised. Their structural elucidation and biological evaluation as cytotoxic agents are described.
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Maisterra M, Castro MÁ, Muñoz-Centeno LM, Calhelha RC, Ferreira IC, García PA. Cytotoxic Terphenyl Neolignans from Fungus Terana coerulea: New Natural Corticins D and E, and Revised Structure for Corticin A. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The cobalt crust fungus Terana coerulea ( Phanerochaetaceae family) was selected for a bio-guided study after an ethnobotanical survey at the Irati's Forest (Navarra, Spain) for its local use as antibiotic. Six extracts of increasing polarity, from hexane to hot water, were obtained from powdered dry fungi and tested for cytotoxicity against four human tumour cell lines and one non-tumour primary cell culture. From the most cytotoxic, EtOAc extract, we isolated and identified three terphenyl neolignans: two of them new natural products, named corticins D and E, and one previously described as corticin A, whose earlier structure has been revised. Their structural elucidation and biological evaluation as cytotoxic agents are described.
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Affiliation(s)
- Maitane Maisterra
- Departamento de Ciencias Farmacéuticas, Sección de Química Farmacéutica, Facultad de Farmacia, CIETUS-IBSAL, University of Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain
- Departamento de Botánica y Fisiología Vegetal, Sección de Botánica, Facultad de Farmacia, University of Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain
- Centro de Investigação de Montanha (CIMO), Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 1172, 5300-253 Bragança, Portugal
| | - M Ángeles Castro
- Departamento de Ciencias Farmacéuticas, Sección de Química Farmacéutica, Facultad de Farmacia, CIETUS-IBSAL, University of Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain
| | - Luz M Muñoz-Centeno
- Departamento de Ciencias Farmacéuticas, Sección de Química Farmacéutica, Facultad de Farmacia, CIETUS-IBSAL, University of Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain
| | - Ricardo C. Calhelha
- Centro de Investigação de Montanha (CIMO), Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 1172, 5300-253 Bragança, Portugal
| | - Isabel C.F.R. Ferreira
- Centro de Investigação de Montanha (CIMO), Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Santa Apolónia, 1172, 5300-253 Bragança, Portugal
| | - Pablo A. García
- Departamento de Ciencias Farmacéuticas, Sección de Química Farmacéutica, Facultad de Farmacia, CIETUS-IBSAL, University of Salamanca, Campus Miguel de Unamuno, 37007 Salamanca, Spain
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