Carboxylic acid recovery from magnesium carboxylate mixture
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United States of America Patent
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Aug 23, 2016
Grant Date -
Apr 2, 2015
app pub date -
May 23, 2013
filing date -
May 24, 2012
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Abstract
The invention is directed to a method for recovering carboyxlic acid from an magnesium carboxylate containing aqueous mixture, including the steps of: contacting the aqueous mixture with an acidic ion exchanger, thereby forming a carboxylic acid mixture and an ion exchanger loaded with magnesium ions; contacting the ion exchanger loaded with magnesium ions with a hydrochloric acid solution, thereby forming a magnesium chloride solution; and thermally decomposing the magnesium chloride solution at a temperature of at least 300° C., thereby forming magnesium oxide (MgO) and hydrogen chloride (HCl).
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