METHOD FOR REMOVING HYDROXYHYDROQUINONE

摘要

Disclosed is a method for removing a hydroxyhydroquinone wherein an aqueous solution containing a hydroxyhydroquinone and a caffeoylquinic acid is brought into contact with an acid clay having an SiO<SUB>2</SUB>/Al<SUB>2</SUB>O<SUB>3</SUB> ratio of 3-5. With this method, a hydroxyhydroquinone can be selectively removed from an aqueous solution containing the hydroxyhydroquinone and a caffeoylquinic acid.