Lignin-based materials for emerging advanced applications

Gaspar, Rita Caiado; Fardim, Pedro

doi:10.1016/j.cogsc.2023.100834

Cited by 4 publications

(30 citation statements)

References 55 publications

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“…Furthermore, similar characteristics were reflected in both Lig-CE14 and Lig-PL [5]. Based on the concentrations of CE12, CE14, and PL [5] before and after the Mitsunobu reaction, the grafting degrees of CE12, CE14, and PL [5] to lignin were determined to 10.6%, 14.2%, and 21.5%, respectively.…”

Section: Resultsmentioning

confidence: 79%

“…Ion Capture Performance. A total of 1 mg each of lignin, PL [5], and Lig-PL [5] was added to 5.0 mL of aqueous solutions (1 × 10 −5 M) including Co 2+ , Ni 2+ , Mn 2+ , Cu 2+ , and Zn 2+ . After being stirred for 10 min, the suspensions were centrifuged to remove the solids.…”

Section: Extraction Of Lignin From Xylitolmentioning

confidence: 99%

“…An Agilent Cary 300 UV−vis spectrophotometer was used to measure the UV− vis spectrum of the sample. The grafting degree of the macrocyclic compounds (CE12, CE14, and PL [5]) was quantified by high-performance liquid chromatography with a C-18 column. The detection conditions were set as follows: mobile phase, formic acid aqueous solution (0.1 mM); flow rate, 0.6 mL/min; column temperature, 25 °C; absorption wavelength, 288 nm.…”

Section: Extraction Of Lignin From Xylitolmentioning

confidence: 99%

“…Herein, we firstly devoted our effort to extracting high-purity lignin from xylitol residue by an ionic liquid. Then cyclic organic compounds, such as 4′-carboxybenzo-12-crown-4 (CE12), 4,4′-dicarboxydibenzo-14-crown-4 (CE14), and carboxylatopillar [5]arene (PL [5]), were grafted onto the lignin scaffold through the Mitsunobu reaction, obtaining CE12, CE14, and PL [5] functionalized lignin complexes (Lig-CE12, Lig-CE14, and Lig-PL [5]). The structural properties of the resulting compounds were characterized by NMR and ultraviolet (UV) spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

“…Herein, highpurity lignin was first extracted from xylitol residue using a strategy of ionic liquid extraction followed by acid hydrolysis. Then the prepared macrocyclic compounds, such as crown ethers and columnar aromatics, were grafted onto lignin via Mitsunobu reactions, obtaining Lig-CE12, Lig-CE14, and Lig-PL [5]. These lignin−macrocycle complexes were applied for the selective capture of metal ions.…”

mentioning

confidence: 99%

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Preparation of a Lignin-Based Adsorbent from Xylitol Residue for the Capture of Metal Ion in Aqueous Solutions

Ma,

Xu,

Feng

et al. 2023

Ind. Eng. Chem. Res.

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Lignin with rich functional groups and high mechanical strength has been employed for the capture of different pollutants under complex environmental conditions. The capture performance can be further improved by chemical modifications such as grafting, cross-linking, and copolymerization. Herein, highpurity lignin was first extracted from xylitol residue using a strategy of ionic liquid extraction followed by acid hydrolysis. Then the prepared macrocyclic compounds, such as crown ethers and columnar aromatics, were grafted onto lignin via Mitsunobu reactions, obtaining Lig-CE12, Lig-CE14, and Lig-PL [5]. These lignin−macrocycle complexes were applied for the selective capture of metal ions. Lig-CE12 and Lig-CE14 showed higher selectivity for the capture of sodium and lithium ions, respectively, and Lig-PL[5] had better capture ability for Co 2+ and Mn 2+ in aqueous solutions. Compared with lignin and macrocycles alone, the combination of lignin and macrocycles resulted in a greatly improved capture performance for metal ions. These adsorbents derived from lignin could bring more environmental benefits due to its stability, biocompatibility, and ease of separation and recovery.

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Section: Resultsmentioning

confidence: 79%

Section: Extraction Of Lignin From Xylitolmentioning

confidence: 99%

Section: Extraction Of Lignin From Xylitolmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Preparation of a Lignin-Based Adsorbent from Xylitol Residue for the Capture of Metal Ion in Aqueous Solutions

Ma,

Xu,

Feng

et al. 2023

Ind. Eng. Chem. Res.

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Role of Deep Eutectic Solvent Precursors as Hydrotropes: Unveiling Synergism/Antagonism for Enhanced Kraft Lignin Dissolution

Sosa,

Abranches,

da Costa Lopes

et al. 2024

ACS Sustainable Chem. Eng.

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Lignin holds significant potential as a feedstock for generating valuable aromatic compounds, fuels, and functional materials. However, achieving this potential requires the development of effective dissolution methods. Previous works have demonstrated the remarkable capability of hydrotropes to enhance the aqueous solubility of lignin, an amphiphilic macromolecule. Notably, deep eutectic solvents (DESs) have exhibited hydrotropic behavior, significantly increasing the aqueous solubility of hydrophobic solutes, making them attractive options for lignin dissolution. This study aimed at exploring the influence of hydrogen bond acceptors (HBAs) and hydrogen bond donors (HBDs) on the performance of DESs as hydrotropes for lignin dissolution, while possible dissolution mechanisms in different water/DES compositions were discussed. The capacity of six alcohols (glycerol, ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, and 1,6-hexanediol) and cholinium chloride to enhance the solubility of Kraft lignin in aqueous media was investigated. A correlation between solubility enhancement and the alkyl chain length of the alcohol was observed. This was rationalized upon the competition between hydrotrope–hydrotrope and solute–hydrotrope aggregates with the latter being maximized for 1,4-butanediol. Interestingly, the hydrotropic effect of DESs on lignin solubility is well represented by the independent sum of the dissolving contributions from the corresponding HBAs and HBDs in the diluted region. Conversely, in the concentrated region, the solubility of lignin for a certain hydrotrope concentration was always found to be higher for the pure hydrotropes rather than their combined HBA/HBD counterparts.

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Estudo Das Propriedades De Sabonetes Líquidos, Produzidos À Partir De Diferentes Óleos Vegetais E Condições Experimentais

Silva,

Rosa

2023

Química E Bioquímica: Fundamentos E Aplicações

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Editora Direitos para esta edição cedidos à Atena Editora pelos autores. Open access publication by Atena Editora Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterála de nenhuma forma ou utilizá-la para fins comerciais.Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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Lignin-based materials for emerging advanced applications

Cited by 4 publications

References 55 publications

Preparation of a Lignin-Based Adsorbent from Xylitol Residue for the Capture of Metal Ion in Aqueous Solutions

Preparation of a Lignin-Based Adsorbent from Xylitol Residue for the Capture of Metal Ion in Aqueous Solutions

Role of Deep Eutectic Solvent Precursors as Hydrotropes: Unveiling Synergism/Antagonism for Enhanced Kraft Lignin Dissolution

Estudo Das Propriedades De Sabonetes Líquidos, Produzidos À Partir De Diferentes Óleos Vegetais E Condições Experimentais

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