Catalyst and method for producing aromatic amines in the gas phase

摘要

The present invention relates to a catalyst comprising a ceramic support with a BET surface area of less than 40 m2/g and (a) 1.0 to 100 g of at least one metal of groups 8 to 12 of the periodic table of the elements, (b) 1.0 g to 100 g of at least one metal of groups 4 to 6 and 12 of the periodic table of the elements and (c) 1.0 g to 100 g of at least one metal of groups 14 and 15 of the periodic table of the elements per liter of bulk volume of the ceramic support, wherein the catalyst is additionally doped with (d) potassium in a content of from 0.0050% by weight to 0.20% by weight, based on the total weight of the catalyst. The present invention also provides the use of such a catalyst in the catalytic gas phase hydrogenation of nitroaromatics.

主权项

1. A catalyst comprising an α-aluminium oxide ceramic support with a BET surface area of less than 10 m2/g and
(a) 8.0 g to 50 g of palladium, (b) 8.0 g to 50 g of vanadium and (c) 2.0 g to 10 g of lead, per liter of bulk volume of the α-aluminium oxide,wherein the catalyst is doped with
(d) potassium in a content of from 0.070% by weight to 0.12% by weight, based on the total weight of the catalyst.