Process for the preparation of aminonaphthalenesulphonic acids

Details Process for the preparation of aminonaphthalenesulphonic acids Process for the preparation of aminonaphthalenesulphonic acids

1978-01-11

1979-08-07

Siegel, A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C14356

Patent

active

041637526

ABSTRACT:
A process has been invented for the preparation of aminonaphthalenesulphonic acids by the catalytic hydrogenation of salts of nitronaphthalenesulphonic acids with hydrogen in the presence of Raney nickel catalysts at elevated temperature and pressure, said catalysts comprising a combination of fresh Raney nickel catalyst and Raney nickel catalyst which has already been used in prior hydrogenation or hydrogenations.

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