Process for the manufacture of dinitriles

Details Process for the manufacture of dinitriles Process for the manufacture of dinitriles

B - Operations, Transporting

01

J

252/127, 260/561

B01J 21/02 (2006.01) B01J 23/04 (2006.01) B01J 27/055 (2006.01) B01J 27/16 (2006.01)

Patent

CA 1103229

ABSTRACT A process and catalyst for the manufacture of dinitriles from dicarboxylic acids and ammonia is disclosed. A vapourized mixture of an aliphatic dicarboxylic acid and anhydrous ammonia is contacted with a dehydration catalyst and the dinitrile so formed separated from the mixture. The dehydration catalyst is a boron phosphate catalyst containing 0.1 to 1.5% of potassium borate and 0.02 to 1.36% of potassium sulphate, the percentages being calculated on a weight basis using the amounts of potassium and boron phosphate.

295787

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