Lignin Utilization Strategies: From Processing to Applications

2021 ◽  
Keyword(s):  
Lignin Utilization

Opportunities of Ionic Liquids for Lignin Utilization from Biorefinery

2018 ◽  
Vol 3 (27) ◽  
pp. 7945-7962 ◽  
Author(s):  
Xinyun Zhu ◽  
Chang Peng ◽  
Huaxin Chen ◽  
Qin Chen ◽  
Zongbao Kent Zhao ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Lignin Utilization

Lignin Utilization I. Kinetics of Base-Catalyzed Condensation Reactions of Lignin Model Compounds

1972 ◽  
Vol 2 (3) ◽  
pp. 271-275 ◽  
Author(s):  
G. E. Troughton ◽  
J. F. Manville
Keyword(s):  
Condensation Reaction ◽  
Activation Energies ◽  
The Self ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Temperature Range ◽  
Condensation Reactions ◽  
Lignin Model ◽  
Lignin Utilization ◽  
Kinetics Of

Rates of formation were measured for the base-catalyzed condensation reactions occurring between 4-alkylguaiacol compounds and their 6-methylol derivatives over the temperature range 85.5–100 °C. It was found that both the intercondensation reaction between the 4-alkylguaiacol compound and its 6-methylol derivative and the self-condensation reaction of the latter compound occurred at significant rates. In the 4-propylguaiacol – 4-methyl-6-methylolguaiacol system, the above two condensation reactions occurring in this system had the same activation energies, 35 kcal/mol. Similarly, in the 4-methylguaiacol – 4-propyl-6-methylolguaiacol system these two condensation reactions had equivalent activation energies, but slightly lower than in the former system, 32 kcal/mol. The kinetic results found for the model guaiacol compounds in this study demonstrate the possibility that a lignin-derived compound having more than one reactive position can be developed into a phenolic-type resin.

Chapter 9. Lignin Utilization

2010 ◽  
pp. 222-262 ◽  
Author(s):  
Gunnar Henriksson ◽  
Jiebing Li ◽  
Liming Zhang ◽  
Mikael E. Lindström
Keyword(s):  
Lignin Utilization

scholarly journals Lignin Precipitation and Fractionation from OrganoCat Pulping to Obtain Lignin with Different Sizes and Chemical Composition

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3330
Author(s):  
Dennis Weidener ◽  
Arne Holtz ◽  
Holger Klose ◽  
Andreas Jupke ◽  
Walter Leitner ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Beech Wood ◽  
Economic Viability ◽  
Antisolvent Precipitation ◽  
Fractionation Procedure ◽  
Lignin Utilization ◽  
Main Components

Fractionation of lignocellulose into its three main components, lignin, hemicelluloses, and cellulose, is a common approach in modern biorefinery concepts. Whereas the valorization of hemicelluloses and cellulose sugars has been widely discussed in literature, lignin utilization is still challenging. Due to its high heterogeneity and complexity, as well as impurities from pulping, it is a challenging feedstock. However, being the most abundant source of renewable aromatics, it remains a promising resource. This work describes a fractionation procedure that aims at stepwise precipitating beech wood (Fagus sp.) lignin obtained with OrganoCat technology from a 2-methyltetrahydrofuran solution, using n-hexane and n-pentane as antisolvents. By consecutive antisolvent precipitation and filtration, lignin is fractionated and then characterized to elucidate the structure of the different fractions. This way, more defined and purified lignin fractions can be obtained. Narrowing down the complexity of lignin and separately valorizing the fractions might further increase the economic viability of biorefineries.

Sign in / Sign up

Export Citation Format

Share Document