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US 2023/0416985 A1Published application
Modified sulfuric acid and uses thereof
AssigneeSixring Inc.
InventorsClay PURDY, Markus WEISSENBERGER, Kyle G. WYNNYK, Karl W. DAWSON
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Abstract
A modified aqueous acid composition comprising: sulfuric acid; a compound comprising an amine moiety and a sulfonic acid moiety; and a peroxide; wherein sulfuric acid, said compound comprising an amine moiety and a sulfonic acid moiety and said peroxide are present in a molar ratio of no less than 1:1:1. Also disclosed are methods of using such compositions.
Claims11
1-17. (canceled)
A method of delignifying plant biomass or biomass material, said method comprising:
- providing said plant biomass or biomass material comprising cellulose fibers and lignin;
- exposing said plant biomass or biomass material to a composition comprising:
- sulfuric acid;
- a compound comprising an amine moiety and a sulfonic acid moiety;
- and
- a peroxide;
- wherein said sulfuric acid, said compound comprising an amine moiety and a sulfonic acid moiety, and said peroxide are present in the composition in a molar ratio of no less than 1:1:1;
- and
- wherein said compound comprising an amine moiety and a sulfonic acid moiety is selected from taurine, taurolidine, taurocholic acid, tauroselcholic acid, tauromustine, 5-taurinomethyluridine, 5-taurinomethyl-2-thiouridine, homotaurine (tramiprosate), acamprosate, a taurate, and an aminoalkylsulfonic acid wherein the alkyl in said aminoalkylsulfonic acid is selected from C1-C5 linear alkyl and C1-C5 branched alkyl,
- for a period of time sufficient to remove substantially all lignin present on said plant biomass gr biomass material.
7 more elements
Dependencies are inferred from the claim text.