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US 2021/0269394 A1Published application
Modified sulfuric acid and uses thereof
AssigneeSixring Inc.
InventorsClay Purdy, Markus Weissenberger, Kyle G. Wynnyk, Karl W. Dawson
Life of this patent
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Abstract
An aqueous composition comprising: sulfuric acid; a compound comprising an amine moiety; a compound comprising a sulfonic acid moiety; and a peroxide. Said composition being capable of delignifying biomass.
Claims23
An aqueous acidic composition comprising:
- sulfuric acid;
- a compound comprising an amine moiety;
- a compound comprising a sulfonic acid moiety;
- and
- a peroxide.
2 more elements
(canceled)
(canceled)
An aqueous composition comprising:
- sulfuric acid present in the composition in an amount ranging from 20-70 wt % of the total weight of the composition;
- a compound comprising an amine moiety;
- a compound comprising a sulfonic acid moiety;
- and
- a peroxide;
- wherein said sulfuric acid, said compound comprising an amine moiety, and said compound comprising a sulfonic acid moiety are present in the composition in a molar ratio ranging from 2:1:1 to 28:1:1, and
- wherein said composition is suitable for processing and depolymerizing cellulose in a plant source.
4 more elements
(canceled)
A method of delignifying plant material, said method comprising:
- providing said plant material comprising cellulose fibers and lignin;
- and
- exposing said plant material to a composition comprising:
- sulfuric acid present in the composition in an amount ranging from 20-70 wt % of the total weight of the composition;
- a compound comprising an amine moiety;
- and
- a compound comprising a sulfonic acid moiety;
- for a period of time sufficient to remove substantially all lignin present on said plant material.
5 more elements
Dependencies are inferred from the claim text.