Spray oxidation process for producing 2,5-furandicarboxylic acid from hydroxymethylfurfural
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United States of America Patent
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Mar 7, 2017
Grant Date -
Jul 2, 2015
app pub date -
Aug 28, 2012
filing date -
Aug 31, 2011
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Abstract
A process is provided for carrying out an oxidation on a sprayable feed including a furanic substrate to be oxidized and a catalytically effective combination of cobalt, manganese, and bromide components for catalyzing the oxidation of the furanic substrate, which process comprises spraying the feed into a reactor vessel as a mist, supplying an oxidant, reacting the furanic substrate and the oxidant, and managing the exothermic temperature rise due to the reaction through a selection and control of the operating pressure within the reactor vessel. A crude dehydration product from the dehydration of fructose, glucose or both, including 5-hydroxymethylfurfural, can be directly oxidized by the process to produce 2,5-furandicarboxylic acid in surprisingly increased yields.
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