| 摘要 |
A process for the continuous hydrogenation of nitro-aromatic compounds uses a supported nickel catalyst having a low or zero, aluminum content which enables longer production runs and reduced deposition of nickel aluminates on reactor walls. A process for the catalytic hydrogenation of nitro-aromatic compounds utilizes a reactor zone, separation zone and peripherals. The hydrogenation process is continuous and uses a catalyst comprising nickel and, optionally, aluminum ; if present, the Al content is no greater than 5.5% of the total catalyst and the dwell time of the catalyst in the zones is at least 3 days. An Independent claim is also included for the use of the process with the aim of limiting the formation of nickel aluminates. |
