Coupling organosolv fractionation and reductive depolymerization of woody biomass in a two-step catalytic process

Ouyang, Xinping; Huang, Xiaoming; Hendriks, Bart M. S.; Boot, Michael; Hensen, Emiel J. M.

doi:10.1039/c8gc00639c

Cited by 86 publications

(49 citation statements)

References 46 publications

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“…Ouyang et al. added H 3 PO 4 during delignification step and direct catalytic depolymerization of lignin‐rich filtrate over Pd/C gave 25.0 wt % yield of monomers . Liu et al.…”

Section: Conventional Approach – Catalytic Depolymerization Of Technimentioning

confidence: 99%

Recent Advances in the Catalytic Depolymerization of Lignin towards Phenolic Chemicals: A Review

et al. 2020

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The efficient valorization of lignin could dictate the success of the 2nd generation biorefinery. Lignin, accounting for on average a third of the lignocellulosic biomass, is the most promising candidate for sustainable production of value‐added phenolics. However, the structural alteration induced during lignin isolation is often depleting its potential for value‐added chemicals. Recently, catalytic reductive depolymerization of lignin has appeared to be a promising and effective method for its valorization to obtain phenolic monomers. The present study systematically summarizes the far‐reaching and state‐of‐the‐art lignin valorization strategies during different stages, including conventional catalytic depolymerization of technical lignin, emerging reductive catalytic fractionation of protolignin, stabilization strategies to inhibit the undesired condensation reactions, and further catalytic upgrading of lignin‐derived monomers. Finally, the potential challenges for the future researches on the efficient valorization of lignin and possible solutions are proposed.

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“…Ouyang et al. added H 3 PO 4 during delignification step and direct catalytic depolymerization of lignin‐rich filtrate over Pd/C gave 25.0 wt % yield of monomers . Liu et al.…”

Section: Conventional Approach – Catalytic Depolymerization Of Technimentioning

confidence: 99%

Recent Advances in the Catalytic Depolymerization of Lignin towards Phenolic Chemicals: A Review

et al. 2020

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“…Abu‐Omar and co‐workers reported the fragmentation of various lignin samples with a bimetallic Pd/Zn catalyst system . The combination of acid and the supported metal catalyst could also enhance the monomer yields …”

Section: The Challengesmentioning

confidence: 99%

“…Actually, this strategy is a combination of lignin extraction and catalytic depolymerization. The addition of acid or base additives facilitates the exfoliation of the lignin in the solvent . The in situ hydrogenolysis of the lignin fragments reduced to some extent the condensation that occurs in the lignin extraction process.…”

Section: The Challengesmentioning

confidence: 99%

Catalytic Scissoring of Lignin into Aryl Monomers

Wang

2019

Advanced Materials

139

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Lignin is an aromatic polymer, which is the biggest and most sustainable reservoir for aromatics. The selective conversion of lignin polymers into aryl monomers is a promising route to provide aromatics, but it is also a challenging task. Compared to cellulose, lignin remains the most poorly utilized biopolymer due to its complex structure. Although harsh conditions can degrade lignin, the aromatic rings are usually destroyed. This article comprehensively analyzes the challenges facing the scissoring of lignin into aryl monomers and summarizes the recent progress, focusing on the strategies and the catalysts to address the problems. Finally, emphasis is given to the outlook and future directions of this research.

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“…This can explain their use in numerous lignin catalytic depolymerization and biomass fractionation studies. [46][47][48][49][50][51] It is likely that lignin is first solubilized in the solvent before it is adsorbed on the catalyst for further depolymerization. 1octanol, however, has a RED value higher than 1, which suggest a lower ability to dissolve lignin.…”

Section: Sustainable Energy and Fuels Accepted Manuscriptmentioning

confidence: 99%

Mild thermolytic solvolysis of technical lignins in polar organic solvents to a crude lignin oil

Kouris

Osch

Cremers

et al. 2020

Sustainable Energy Fuels

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Coupling organosolv fractionation and reductive depolymerization of woody biomass in a two-step catalytic process

Abstract: A two-step catalytic process for woody biomass fractionation and valorization is presented.

Cited by 86 publications

References 46 publications

Recent Advances in the Catalytic Depolymerization of Lignin towards Phenolic Chemicals: A Review

Recent Advances in the Catalytic Depolymerization of Lignin towards Phenolic Chemicals: A Review

Catalytic Scissoring of Lignin into Aryl Monomers

Mild thermolytic solvolysis of technical lignins in polar organic solvents to a crude lignin oil

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