We investigated the possibility of using contact acceptances based on oxides of alkali and alkaline earth metals, deposited on the porous solid phase carriers for deep purification of gas streams and liquids from organic acids and impurities on the number of anhydride production. It is proved that the Accepting contacts, made of autoclaved aerated concrete waste with a high content of alkali or alkaline earth agent have an increased dynamic activity, which explains the great influence of cracking layer effect
