[EN] METHOD FOR PREPARING METHIONINE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE MÉTHIONINE
申请人:EVONIK DEGUSSA GMBH
公开号:WO2018114640A1
公开(公告)日:2018-06-28
The present invention relates to a method for preparing methionine or methionine salts. In particular, the invention describes the step of preparing 2-hydroxy-4-(methylthio)butyronitrile (MMP-CN) from 3-methylthiopropanal (MMP) and hydrogen cyanide (HCN) in the presence of ammonia by bringing a gaseous mixture comprising HCN and ammonia into contact with MMP.