Oxidized Lignin Depolymerization using Formate Ionic Liquid as Catalyst and Solvent

Jinhuo Dai, Antonio F. Patti, Lionel Longe, Gil Garnier, Kei Saito

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Lignin has been widely studied as a sustainable source of renewable materials, particularly aromatic feedstock chemicals, which are in great and increasing need in the world. Lignin oxidation and depolymerization presents a promising approach to functionalized phenolic products. In this work, a novel oxidative degradation of lignin using a formate ionic liquid was investigated resulting in ethyl acetate soluble and also water-soluble depolymerized lignin products. The β-O-4 bonds in lignin were oxidized and then depolymerized by a recyclable ionic liquid, 2-hydroxy ethylammonium formate. 2-Hydroxy ethylammonium formate, which could dissolve lignin acting as a solvent, was found to also catalyze the depolymerization of the oxidized lignin. The lignin depolymerization products were characterized.

Original languageEnglish
Pages (from-to)2684-2690
Number of pages7
JournalChemCatChem
Volume9
Issue number14
DOIs
Publication statusPublished - 24 Jul 2017

Keywords

  • Lignin oxidation
  • TEMPO
  • β-O-4 bonds
  • Formate ionic liquid
  • Lignin depolymerisation

Cite this

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title = "Oxidized Lignin Depolymerization using Formate Ionic Liquid as Catalyst and Solvent",
abstract = "Lignin has been widely studied as a sustainable source of renewable materials, particularly aromatic feedstock chemicals, which are in great and increasing need in the world. Lignin oxidation and depolymerization presents a promising approach to functionalized phenolic products. In this work, a novel oxidative degradation of lignin using a formate ionic liquid was investigated resulting in ethyl acetate soluble and also water-soluble depolymerized lignin products. The β-O-4 bonds in lignin were oxidized and then depolymerized by a recyclable ionic liquid, 2-hydroxy ethylammonium formate. 2-Hydroxy ethylammonium formate, which could dissolve lignin acting as a solvent, was found to also catalyze the depolymerization of the oxidized lignin. The lignin depolymerization products were characterized.",
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Oxidized Lignin Depolymerization using Formate Ionic Liquid as Catalyst and Solvent. / Dai, Jinhuo; Patti, Antonio F.; Longe, Lionel; Garnier, Gil; Saito, Kei.

In: ChemCatChem, Vol. 9, No. 14, 24.07.2017, p. 2684-2690.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Oxidized Lignin Depolymerization using Formate Ionic Liquid as Catalyst and Solvent

AU - Dai, Jinhuo

AU - Patti, Antonio F.

AU - Longe, Lionel

AU - Garnier, Gil

AU - Saito, Kei

PY - 2017/7/24

Y1 - 2017/7/24

N2 - Lignin has been widely studied as a sustainable source of renewable materials, particularly aromatic feedstock chemicals, which are in great and increasing need in the world. Lignin oxidation and depolymerization presents a promising approach to functionalized phenolic products. In this work, a novel oxidative degradation of lignin using a formate ionic liquid was investigated resulting in ethyl acetate soluble and also water-soluble depolymerized lignin products. The β-O-4 bonds in lignin were oxidized and then depolymerized by a recyclable ionic liquid, 2-hydroxy ethylammonium formate. 2-Hydroxy ethylammonium formate, which could dissolve lignin acting as a solvent, was found to also catalyze the depolymerization of the oxidized lignin. The lignin depolymerization products were characterized.

AB - Lignin has been widely studied as a sustainable source of renewable materials, particularly aromatic feedstock chemicals, which are in great and increasing need in the world. Lignin oxidation and depolymerization presents a promising approach to functionalized phenolic products. In this work, a novel oxidative degradation of lignin using a formate ionic liquid was investigated resulting in ethyl acetate soluble and also water-soluble depolymerized lignin products. The β-O-4 bonds in lignin were oxidized and then depolymerized by a recyclable ionic liquid, 2-hydroxy ethylammonium formate. 2-Hydroxy ethylammonium formate, which could dissolve lignin acting as a solvent, was found to also catalyze the depolymerization of the oxidized lignin. The lignin depolymerization products were characterized.

KW - Lignin oxidation

KW - TEMPO

KW - β-O-4 bonds

KW - Formate ionic liquid

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