Review on the oxidative catalysis methods of converting lignin into vanillin

Xu, Xuewen; Li, Penghui; Zhong, Yidan; Yu, Jian; Miao, Chang; Tong, Guolin

doi:10.1016/j.ijbiomac.2023.125203

Cited by 20 publications

(10 citation statements)

References 155 publications

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“…As a more environmentally friendly alternative, the production of chemicals with high added value from lignin has been proposed in the literature. Many processes are envisaged for this purpose, such as the pyrolysis process for bio-oil production, 6 syngas from lignin gasification, 7 BTX from lignin hydrodeoxygenation (HDO), 8 cycloalkane production via hydrogenation, 9 or the obtention of monoaromatic aldehydes from oxidative depolymerization of lignin, 10 where vanillin stands out as the most profitable compound.…”

Section: Introductionmentioning

confidence: 99%

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

García-Rollán,

Rivas-Márquez,

Bertran-Llorens

et al. 2024

Energy Fuels

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The sustainable production of vanillin from the oxidative depolymerization of lignin was evaluated. Vanillin was produced from Kraft lignin using heterogeneous catalysts based on activated carbons prepared by chemical activation of sodium lignosulfonate with H 3 PO 4 . The novel redox catalytic system, obtained by HNO 3 treatment, allows the heterogenization of nitrobenzene structures on the activated carbon, reaching vanillin yield 30% higher than that obtained without a heterogeneous catalyst (about 3.1 wt %). A copper catalyst (5 wt %) was also prepared for comparison purposes. The highest vanillin yield was obtained at 200 °C and 10 bar for the nitrobenzene-like catalyst, reaching full extraction from the selected technical lignin. The catalyst was successfully reused without any regeneration treatment, evidencing no signs of deactivation. The possibility of transferring oxygen from oxidized P groups to reduced N groups in a redox cycle seems to be responsible for this sustained catalytic activity. To promote zero waste production, the obtained residual lignin was also used to prepare an activated carbon with outstanding properties, A BET ∼ 1000 m 2 /g.

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Section: Introductionmentioning

confidence: 99%

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

García-Rollán,

Rivas-Márquez,

Bertran-Llorens

et al. 2024

Energy Fuels

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“…Numerous thermochemical techniques, such as catalytic oxidation, 7 hydrogenolysis, 8 and catalytic pyrolysis, 9 have been widely utilized to depolymerize lignin, aiming to yield high-quality aromatic compounds. Specifically, rapid catalytic pyrolysis has emerged as an efficient process, demonstrating high yield and selectivity in generating aromatics.…”

Section: Introductionmentioning

confidence: 99%

Enhanced aromatics production through Fe and HZSM-5 catalytic lignin pyrolysis with magnetic field assistance

Yao,

Zhao,

Guan

et al. 2024

Green Chem.

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“…The current industrial processes of paper and pulp production generate large amounts of lignin as a by-product, with most of it being burned as low-value fuel. The valorization of lignin into high-value chemicals like vanillin is nowadays gaining more interest because it can contribute to a circular bioeconomy and reduce our dependency on fossil resources [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

From Waste to Value: Recent Insights into Producing Vanillin from Lignin

D’Arrigo,

Rossato,

Strini

et al. 2024

Molecules

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Vanillin, one of the most widely used and appreciated flavoring agents worldwide, is the main constituent of vanilla bean extract, obtained from the seed pods of various members belonging to the Orchidaceae family. Due to the great demand in the food confectionery industry, as well as in the perfume industry, medicine, and more, the majority of vanillin used today is produced synthetically, and only less than one percent of the world’s vanilla flavoring market comes directly from the traditional natural sources. The increasing global demand for vanillin requires alternative and overall sustainable new production methods, and the recovery from biobased polymers, like lignin, is an environmentally friendly alternative to chemical synthesis. The present review provides firstly an overview of the different types of vanillin, followed by a description of the main differences between natural and synthetic vanillin, their preparation, the market of interest, and the authentication issues and the related analytical techniques. Then, the review explores the real potentialities of lignin for vanillin production, presenting firstly the well-assessed classical methods and moving towards the most recent promising approaches through chemical, biotechnological and photocatalytic methodologies, together with the challenges and the principal issues associated with each technique.

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Review on the oxidative catalysis methods of converting lignin into vanillin

Cited by 20 publications

References 155 publications

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

Biobased Vanillin Production by Oxidative Depolymerization of Kraft Lignin on a Nitrogen- and Phosphorus-Functionalized Activated Carbon Catalyst

Enhanced aromatics production through Fe and HZSM-5 catalytic lignin pyrolysis with magnetic field assistance

From Waste to Value: Recent Insights into Producing Vanillin from Lignin

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