Process for producing a carboxylic acid

Details Process for producing a carboxylic acid Process for producing a carboxylic acid

1996-03-06

1998-06-09

Richter, Johann

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

423356, 423470, 423396, 423302, 423549, C07C 5162, C07C 51367, C07C 5108, C07C 5106

Patent

active

057636524

ABSTRACT:
A nitrile compound or an amide compound is hydrolyzed in the presence of an inorganic acid or other acidic catalyst or an alkali metal hydroxide or other basic catalyst, and the by-produced ammonium salt of the acidic catalyst or the produced salt of a carboxylic acid and a base is electrodialysed to form an acid and ammonia or aqueous ammonia, or to form a base and ammonia. The obtained acid or base may be recycled as a catalyst for the hydrolysis of the nitrile compound or amide compound, and the obtained ammonia is reutilized as a nitrogen source for the nitrile compound or amide compound. Such amide compound may be produced by hydration of a nitrite compound in the presence of a manganese oxide.

REFERENCES:
patent: 3920670 (1975-11-01), Norton
patent: 3968152 (1976-07-01), Sze et al.
patent: 4304934 (1981-12-01), Bartels-Keith et al.
patent: 4950788 (1990-08-01), Farrar et al.
patent: 5210309 (1993-05-01), Newkome et al.

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