| 摘要 |
PCT No. PCT/EP98/01985 Sec. 371 Date Oct. 7, 1999 Sec. 102(e) Date Oct. 7, 1999 PCT Filed Apr. 6, 1998 PCT Pub. No. WO98/46557 PCT Pub. Date Oct. 22, 1998Aromatic amines are produced by catalytic hydrogenation of corresponding aromatic nitro compounds in the gas phase, by carrying out the hydrogenation in the presence of catalysts which, besides palladium, vanadium and lead, contain in addition molybdenum, tungsten and/or rhenium on a ceramic support having a BET surface area of less than 40 m3/g, at temperatures of from 180 DEG C. to 500 DEG C. in a catalyst bed and in a molar ratio of hydrogen to the nitro group or nitro groups of 3:1 to 30:1. |
