PREPARATION OF AROMATIC AMINES THROUGH NEW HYDROGENATION CATALYSTS.

摘要

The invention relates to aromatic amines that are manufactured by the corresponding catalytic hydrogenation of aromatic nitro compounds in the gas phase. Hydrogenation is carried out in the presence of a catalyst containing palladium, vanadium and lead as well as rhenium in a ceramic carrier with a BET surface of less than 40 m {sup, 3} / g at temperatures ranging from 180º to 500ºC in the catalyst support and with a molar ratio of H to variable nitro groups from 3: 1 to 30: 1.