| 摘要 |
The invention relates to a method for separating ammoniac (I) from mixtures (II) containing ammoniac (I) and an amide (IV) is obtained by reacting educt s (III) selected from the group consisting of nitriles (IIIa), amines (IIIb), aminonitriles (IIIc) and aminoamides (IIId) with water. The method is characterised in that a) the educt (III) is reacted with water in liquid pha se in the presence of an organic liquid diluting agent (V) to form a mixture (I I) containing amide (IV) and ammoniac (I), b) the mixture (II) is transformed under conditions of mass, pressure and temperature - under which the dilutin g agent (V) and the water are in a liquid state and exhibit a miscibility gap - in order to obtain a two phase system consisting of a phase (VII), c) phase (VII) is separated from phase (VIII), d) the ammoniac present in phase (VII) is separated by extraction (a) by means of a mixture (IX) containing water i n order to obtain a mixture (XI) which contains less ammoniac than phase (VII) , and e) the diluting agent (V) is separated from the mixture (XI) in order to obtain the amide (IV).
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