Conversion of Lignin into Bio-Based Chemicals and Materials

Xu, Chunbao; Ferdosian, Fatemeh

doi:10.1007/978-3-662-54959-9

Cited by 99 publications

(119 citation statements)

References 0 publications

Supporting

Mentioning

111

Contrasting

Unclassified

Order By: Relevance

“…The reductive catalytic fractionation (RCF) takes its route from the organosolv process (Alcell). The previous strategy was to fractionate the biomass components (e. g., organosolv) prior to catalytic depolymerization in order to reduce the complexity of downstream separation . The purpose of the organosolv (Alcell) process was to improve the enzymatic saccharification of high value cellulose and the technical lignin was sold as low‐grade fuel .…”

Section: Emerging Strategy – Reductive Catalytic Fractionationmentioning

confidence: 99%

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

et al. 2020

View full text Add to dashboard Cite

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.

show abstract

Section: Emerging Strategy – Reductive Catalytic Fractionationmentioning

confidence: 99%

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

et al. 2020

View full text Add to dashboard Cite

show abstract

“…syringyl group [34]; and the one at 832 cm , attributed to the C-H out of plane bending vibrations in the p-hydroxyphenyl propane units [35]. While the increased intensity of the band at 898 cm −1 showed an increase in cellulose content due to the delignification, the decrease in intensity of the band at around 1369 cm −1 indicated an increase in amorphous cellulose [36].…”

Section: Vibrational and Sem Characterizationmentioning

confidence: 99%

“…The treated bagasse presented a notable decrease in the absorbance of peaks attributed to lignin, such as the one at 1729 cm −1 , attributed to ferulate and p-coumarate esters [32]; those at 1603 cm −1 and 1513 cm −1 , ascribed to the vibration of the aromatic ring [33]; the one at 1374 cm −1 , associated with syringyl group [34]; and the one at 832 cm −1 , attributed to the C-H out of plane bending vibrations in the p-hydroxyphenyl propane units [35]. While the increased intensity of the band at 898 cm −1 showed an increase in cellulose content due to the delignification, the decrease in intensity of the band at around 1369 cm −1 indicated an increase in amorphous cellulose [36].…”

Section: Vibrational and Sem Characterizationmentioning

confidence: 99%

Sugarcane Bagasse Hydrolysis Enhancement by Microwave-Assisted Sulfolane Pretreatment

et al. 2019

View full text Add to dashboard Cite

Sugarcane bagasse is the major by-product of the sugarcane industry and, due to its abundant availability, it has been extensively studied for lignocellulosic bioconversion in the production of bioethanol and other value-added commercial products. In the study presented herein, a combined pretreatment using sulfolane, TiO2 and alkali microwave irradiation (MW-A) was assessed for the dissolution of lignin prior to enzymatic saccharification of holocellulose. Total reducing sugars (TRS) and saccharinic acid yields were investigated. The increase in NaOH concentration up to 5% and in temperature from 120 °C to 140 °C were found to have a positive influence on both yields. While increasing the reaction time from 5 to 60 min only led to an increase in TRS yield <2%, a reaction time of 30 min almost doubled the saccharinic acids production. TRS yields and saccharinic acid production were approximately 5% and 33% higher when the sulfolane-TiO2 reaction medium was used, as compared to MW-A in water, reaching up to 64.8% and 15.24 g/L of saccharinic acids, respectively. The proposed MW-A pretreatment may hold promise for industrial applications, given the good TRS yields obtained, and the associated enzyme and time/energy savings. The use of sulfolane-TiO2 reaction medium is encouraged if saccharinic acids are to be recovered too.

show abstract

“…Likewise, the presence of KL MeOH had a profound impact on the thermal stability of the resins. Although there are some exceptions [24], the incorporation of lignin in a polymeric matrix typically leads to increased thermal stability [25]. TGA experiments (Figure 4 and Table 4) showed increased stability as the content of lignin in the sample rose.…”

Section: Influence Of the Lignin Content On The Thermal Propertiesmentioning

confidence: 99%

Fully Biobased Epoxy Resins from Fatty Acids and Lignin

2020

View full text Add to dashboard Cite

The use of renewable resources for plastic production is an imperious need for the reduction of the carbon footprint and the transition towards a circular economy. With that goal in mind, fully biobased epoxy resins have been designed and prepared by combining epoxidized linseed oil, lignin, and a biobased diamine derived from fatty acid dimers. The aromatic structures in lignin provide hardness and strength to an otherwise flexible and breakable epoxy resin. The curing of the system was investigated by infrared spectroscopy and differential scanning calorimetry (DSC). The influence of the different components on the thermo-mechanical properties of the epoxy resins was analyzed by DSC, thermal gravimetric analysis (TGA), and tensile tests. As the content of lignin in the resin increases, so does the glass transition, the Young’s modulus, and the onset of thermal degradation. This correlation is non-linear, and the higher the percentage of lignin, the more pronounced the effect. All the components of the epoxy resin being commodity chemicals, the present system provides a realistic opportunity for the preparation of fully biorenewable resins at an industrial scale.

show abstract

Conversion of Lignin into Bio-Based Chemicals and Materials

Cited by 99 publications

References 0 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

Sugarcane Bagasse Hydrolysis Enhancement by Microwave-Assisted Sulfolane Pretreatment

Fully Biobased Epoxy Resins from Fatty Acids and Lignin

Contact Info

Product

Resources

About