Integrated Process for the Production of Acrylic Acids and Acrylates
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United States of America Patent
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Jun 27, 2013
filing date -
Oct 31, 2012
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Abstract
A process for producing an acrylate product from methanol and acetic acid, in which, in a reaction zone A, the methanol is partially oxidized to formaldehyde in a catalyzed gas phase reaction, the product gas mixture A obtained and an acetic acid source are combined to form a reaction gas input mixture B which comprises acetic acid in excess over formaldehyde, and the formaldehyde in reaction gas input mixture B is aldol-condensed to acrylic acid in the presence of a catalyst in a reaction zone B to form an acrylic acid-containing product gas mixture B from which an acrylate product stream may be separated. Suitable aldol condensation catalysts include vanadium-bismuth, vanadium-titanium-bismuth, vanadium-bismuth-tungsten, vanadium-titanium-tungsten, vanadium-titanium and vanadium-tungsten.
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