Mild and selective etherification of wheat straw lignin and lignin model alcohols by moisture-tolerant zirconium catalysis

Thermogravimetric Characteristics of Wheat Straw Lignin

The thermogravimetric characteristics of wheat straw EMAL (Enzymatic Acidolysis Lignin) were analyzed. The effect of the heating rates on the thermogravimetric characteristics of wheat straw and the wheat straw influence on pyrolysis were investigated. The influence of various heating rates on wheat straw was significant, the pyrolysis rate of wheat straw EMAL increased at temperatures between ...

De-etherification of lignin model compounds and lignins

Introduction Lignin is the second most abundant polymer on earth and is found in almost all biomass resources. This inexpensive feedstock is an ideal carbon source that can be used to makes fuels and chemicals. However, there are substantial challenges to convert it into a liquid fuel [1]. Lignin is an amorphous polymer consisting of randomly branched phenylpropenyl (C9) groups. The linkages be...

Phenolation of alkali lignin of wheat straw in ionic liquid

Fractionation of Hemicelluloses and Lignin from Rice Straw by Combining Autohydrolysis and Optimised Mild Organosolv Delignification

An integrated strategy was followed to valorise rice straw, one of the most relevant biomass feedstocks available worldwide, to selectively recover solubilised hemicelluloses and lignin. The pathway encompassed the use of autohydrolysis to hydrolyse the hemicelluloses and an ethanol-based organosolv process to solubilise lignin. Several autohydrolysis conditions were assayed with the best resul...

Redox Catalysis Facilitates Lignin Depolymerization

Lignin is a recalcitrant and underexploited natural feedstock for aromatic commodity chemicals, and its degradation generally requires the use of high temperatures and harsh reaction conditions. Herein we present an ambient temperature one-pot process for the controlled oxidation and depolymerization of this potent resource. Harnessing the potential of electrocatalytic oxidation in conjugation ...