METHODS FOR PREPARING ACRYLIC ACID FROM BIOBASED STARTING MATERIALS

摘要

Described herein are methods for preparing acrylic acid from biobased starting materials, e.g., ethanol. Methods for preparing acrylic acid comprising steps of (a) providing a source of ethanol; (b) heating the ethanol with an inorganic aid to obtain ethylene; (c) carbonylating the ethylene in the presence of a metal catalyst to obtain propanoic acid; (d) halogenating the propanoic acid to obtain halopropanoic acid; (e) heating the halopropanoic acid in the presence of an inorganic base; and (f) recovering acrylic acid are described herein.