51607-79-5Relevant articles and documents
Dehydration of sorbitol to isosorbide over H-beta zeolites with high Si/Al ratios
Kobayashi, Hirokazu,Yokoyama, Haruka,Feng, Bo,Fukuoka, Atsushi
, p. 2732 - 2735 (2015)
Conversion of sorbitol to isosorbide by heterogeneous catalysts is a challenge in biorefinery. Herein, H-beta zeolites with specific Si/Al ratios uniquely give isosorbide in up to 76% yield under mild conditions. Mechanistic study has suggested that acid sites on hydrophobic internal surface are active for this reaction.
Production of cyclic ether and a recycling method of using ionic liquids
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Paragraph 0033; 0036, (2017/06/15)
PROBLEM TO BE SOLVED: To provide a method for manufacturing cyclic ethers having a high environmental friendliness capable of obtaining, without using a supercritical fluid or high-pressure reaction vessel, cyclic ethers led by isosorbide in favorable yields within brief periods and a method for recycling an ionic liquid used for the same.SOLUTION: The provided method for manufacturing cyclic ethers comprises a step of dehydrating a polyhydric alcohol possessing at least three hydroxyl groups by heating the polyhydric alcohol with microwaves by using an ionic liquid as a reaction solvent. A method for recycling the ionic liquid used for the same is also provided.
INTEGRATED CONTINUOUS PROCESS FOR ANHYDRO SUGAR ALCOHOL MANUFACTURE
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Page/Page column 21-23, (2008/06/13)
An integrated continuous process is disclosed for the manufacture of high purity, polymer grade dianhydro sugar alcohols, such as isosorbide, by the dehydration of corresponding sugar alcohols. The water vapors evolved during the dehydration are used to separate product dianhydro sugar alcohols from the high boiling byproducts in the reaction mass. The product is recovered from the vapor stream as high purity crystals. The high boiling reaction byproducts are recycled.