Modified sulfuric acid and uses thereof
AssigneeSixring Inc.
InventorsClay Purdy, Markus Weissenberger, Markus Pagels, Kyle G Wynnyk
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Abstract
A one-pot process to separate lignin from a lignocellulosic feedstock, where the process involves the steps of: providing a vessel; providing the lignocellulosic feedstock; providing a composition that includes: an acid; a modifying agent including a compound containing an amine group; and a peroxide; exposing the lignocellulosic feedstock to the composition in the vessel for a period of time sufficient to remove at least 80% of the lignin present in the lignocellulosic feedstock; and, optionally, separating and removing a liquid phase that includes dissolved lignin fragments from a solid phase containing cellulose fibres.
Claims13
A one-pot process to separate lignin from a lignocellulosic feedstock, the one-pot process comprising the steps of:
- providing a vessel;
- providing the lignocellulosic feedstock;
- providing a composition comprising:
- an acid;
- a modifying agent comprising a compound containing an amine group;
- and
- a peroxide;
- exposing the lignocellulosic feedstock to the composition in the vessel for a period of time sufficient to remove at least 80% by mass of the lignin present in the lignocellulosic feedstock;
- and
- optionally, separating and removing a liquid phase comprising dissolved lignin fragments from a solid phase comprising cellulose fibres.
Dependencies are inferred from the claim text.