Systems and methods for producing aromatic amines and removing phenol therefrom

摘要

Systems and methods for producing aromatic amines and removing phenol therefrom are provided. The method can include hydrogenating one or more aromatic nitro compounds to produce a reaction product comprising one or more aromatic amines, water, and phenol. The method can also include contacting the reaction product with one or more ion exchange materials to produce an aromatic amine product that contains less phenol than the reaction product. The one or more ion exchange materials can be solid, semi-solid, or a combination thereof.

主权项

1. A method for producing one or more aromatic amines, comprising:
hydrogenating one or more aromatic nitro compounds to produce a reaction product comprising one or more aromatic amines, water, and phenol; separating at least a portion of the water from the reaction product to produce a crude product comprising about 100 ppmwt to about 2,500 ppmwt phenol and about 85 wt % to about 99 wt % aniline; and contacting the crude product with one or more ion exchange materials to produce an aniline product that contains less than 50 ppmwt phenol, wherein the one or more ion exchange materials are solid, semi-solid, or a combination thereof.