Method for preparing coumestrol or coumestrin
US-2015376200-A1 · Dec 31, 2015 · US
Novel process for conversion of hemicellulose into c5 sugars using ionic liquids
US2016347781A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016347781-A1 |
| Application number | US-201515112813-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 21, 2015 |
| Priority date | Jan 21, 2014 |
| Publication date | Dec 1, 2016 |
| Grant date | — |
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- Title
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Abstract
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The present invention discloses one pot process for the conversion of hemicellulose into C5 sugars using ionic liquids in water media.
First claim
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1 . A one pot process for conversion of substrate comprising Rice Husk-1, Rice Husk-2, Wheat straw, hemicellulose and Bagasse to C5 and C6 sugars, the process comprising: mixing substrate, solvent and ionic liquid catalyst at a temperature in the range of 130 to 180° C. for a time in the range of 10 min to 12 h to obtain C5 and C6 sugars, wherein C5 sugars yield is in the range of 70% to 95%. 2 . (canceled) 3 . The process according to claim 1 , wherein solvent is water. 4 . The process according to claim 1 , wherein ionic liquid catalyst is selected from 1-methyl-3-(3-sulfopropyl)-imidazolium hydrogensulfate, 1-methyl-3-(3-sulfopropyl)-imidazolium para-toluenesulfonate, 1-methyl-3-(3-sulfopropyl)-imidazolium chloride or 1-butyl-3-methylimidazolium chloride. 5 . The process according to claim 4 , wherein ionic liquid catalyst is 1-methyl-3-(3-sulfopropyl)-imidazolium hydrogensulfate. 6 . The process according to claim 1 , wherein C5 sugars are selected from xylose and arabinose. 7 . (canceled) 8 . The process according to claim 1 , wherein C6 sugars are selected from glucose and fructose with yields in the range of 10 to 15%. 9 . The process according to claim 1 , wherein the process is carried out in batch mode. 10 . The process according to claim 1 , wherein the ionic liquid catalyst is recovered and reused.
Assignees
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Classifications
Preparation from natural products · CPC title
- C07H1/08Primary
from natural products · CPC title
Monosaccharides · CPC title
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- What does patent US2016347781A1 cover?
- The present invention discloses one pot process for the conversion of hemicellulose into C5 sugars using ionic liquids in water media.
- Who is the assignee on this patent?
- Council Scient Ind Res
- What technology area does this patent fall under?
- Primary CPC classification C07H1/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Dec 01 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).