MODIFIED SULFURIC ACID AND USES THEREOF
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United States of America Patent
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Issued Date -
May 9, 2024
app pub date -
Jan 15, 2024
filing date -
Feb 25, 2021
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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.
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