Catalytic reduction process of nitrobenzene to aniline in liquid phase

摘要

method nitrobenzenu hydrogenation to aniline in liquid phase is that hydrogenation is carried out in two reakcnu00edch zones, while in the first zone is at temperature 150 - 250.degree.c and the concentration of nitrobenzenu is maintained at the level of 0.05 - 0.5% by weight. and the mixture of 1. in the second zone in a zone with hydrogenated temperature 50 - 100.degree.c on the residual concentration of nitrobenzenu maximum 10 ppm.