Modified sulfuric acid and uses thereof
AssigneeSixring Inc.
InventorsClay Purdy, Markus Weissenberger, Markus Pagels, Kyle G Wynnyk
Life of this patent
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Abstract
An aqueous composition comprising: sulfuric acid; a modifying agent comprising an amine group; and a peroxide. The amine group can include triethanolamine, diethanolamine, monoethanolamine, pyrrolidine, ethylenediamine, diethylamine, triethylamine, DIPEA, cyclohexylamine, piperidine, morpholine, DBU, benzylamine, and combinations thereof. The composition is capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes place. The composition can be used in processing and depolymerization of cellulose from a plant source.
Claims9
An aqueous acidic composition consisting of:
- sulfuric acid;
- a compound containing an amine group selected from the group consisting of triethanolamine, diethanolamine, monoethanolamine, pyrrolidine, ethylenediamine, diethylamine, triethylamine, DIPEA, cyclohexylamine, piperidine, morpholine, DBU, benzylamine, and combinations thereof;
- and
- a peroxide.
An aqueous composition for use in the processing and depolymerization of cellulose from a plant source, wherein said composition consists of:
- sulfuric acid present in an amount ranging from 20-80 wt % of the total weight of the composition;
- a compound containing an amine group selected from the group consisting of triethanolamine, diethanolamine, monoethanolamine, pyrrolidine, ethylenediamine, diethylamine, triethylamine, DIPEA, cyclohexylamine, piperidine, morpholine, DBU, benzylamine, and combinations thereof;
- and
- a peroxide;
- wherein the sulfuric acid and the compound containing an amine group are present in a mole ratio ranging from 2:1 to 28:1.
Dependencies are inferred from the claim text.