Patent ID: 9096510
Filing Date: 2015-08-04
Classification: C07C,C07D,C08G,Y02P

Abstract:
1. A method for the synthesis of acrylic acid comprising the steps of: providing a gaseous feedstock stream comprising ethylene oxide and carbon monoxide; directing the feedstock stream to a first reaction zone where it is contacted with a metal carbonyl compound and where at least a portion of the ethylene oxide is converted to a carbonylation product stream comprising beta propiolactone; directing the carbonylation product stream to a second reaction zone where it is contacted with a catalyst, which catalyzes the conversion of beta propiolactone to acrylic acid, wherein the conversion of beta propiolactone to acrylic acid is performed in a continuous flow format; withdrawing an acrylic acid product stream from the second reaction zone; and isolating acrylic acid from the product stream.