Modified sulfuric acid and uses thereof
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United States of America Patent
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Feb 20, 2024
Grant Date -
Aug 25, 2022
app pub date -
Aug 20, 2021
filing date -
Feb 25, 2021
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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.
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