Process for production of glycolic acid
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United States of America Patent
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Aug 6, 2013
Grant Date -
Jun 16, 2011
app pub date -
Mar 16, 2009
filing date -
May 20, 2008
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Abstract
Process for producing glycolic acid by contacting carbon monoxide and formaldehyde, optionally in the presence of a solvent, with a catalyst including a solid acid. The solid acid is an acidic polyoxometalate compound insoluble in formaldehyde, glycolic acid and the optional solvent, and has a concentration of acid sites of greater than 60 μmol g−1 on the external surface and/or a Hammett Acidity value of less than −12.8.
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