REGENERATION OF CLAY CATALYSTS FOR ALKYLATION OF AROMATIC RINGS

摘要

Catalysts, in particular clay catalysts, used in alkylation reaction of aromatic compounds, e.g., aromatic amines, that have lost activity during use, are regenerated by contacting the used catalyst with a mixture of a minor amount of an acid, in a mixture with water and an organic solvent. The regeneration process is readily incorporated into an alkylation process for aromatic amines.