METHOD FOR PRODUCING ACRYLIC ACID FROM ETHYLENE OXIDE AND CARBON MONOXIDE

摘要

The invention relates to a method for producing acrylic acid from ethylene oxide and carbon monoxide, in which ethylene oxide is carbonylated in a non-protic solvent with carbon monoxide in the presence of a Co-containing catalyst system to form poly-3-hydroxy propionate, the Co-content of the formed poly-3-hydroxy propionate is then reduced with the aid of water and/or an aqueous solution as a precipitation and/or washing liquid and the poly-3-hydroxy propionate is subsequently cleaved by thermolysis to form acrylic acid.