Back to results
US 12,698,590 B2Granted
Processes for fractionation of biomass
AssigneeThe Board of Trustees of The University of Alabama
InventorsJames Dennis Pierog-Sheehan, Jason E. Bara
Life of this patent
Estimating the term…
Abstract
Disclosed herein are systems and methods delignifying and depolymerizing lignocellulosic biomass into an aromatic species-rich fraction and a carbohydrate-rich fraction. The resultant fractions can be used as raw materials to produce value-added goods from biogenic carbon.
Claims15
A method of processing biomass comprising heating a mixture comprising biomass and a solvent comprising a compound of Formula (1):
- wherein
- R1 is selected from C1-8alkyl, C3-8cycloalkyl, aryl, or C1-8heteroaryl optionally substituted one or more times by F, Cl, Br, C1-8alkoxy, C3-8cycloalkyl, aryl, C1-8heterocyclyl, or C1-8heteroaryl;
- R3 is selected from H, C1-8alkyl, C3-8cycloalkyl, aryl, or C1-8heteroaryl optionally substituted one or more times by F, Cl, Br, C1-8alkoxy, C3-8cycloalkyl, aryl, C1-8heterocyclyl, or C1-8heteroaryl;
- R2 and R2* together form an oxo, or
- R2* is H and R2 is OR2a wherein R2a is selected from H, C1-8alkyl, C3-8cycloalkyl, aryl, or C1-8heteroaryl optionally substituted one or more times by F, Cl, Br, C1-8alkoxy, C3-8cycloalkyl, aryl, C1-8heterocyclyl, or C1-8heteroaryl, wherein the mixture further comprises a homogeneous catalyst, a heterogeneous catalyst, or a combination thereof.
2 more elements
Dependencies are inferred from the claim text.