Explanation

ion exchange resin with acidic functional group and cation in solution for ion exchange reaction. The strong acid cation exchange resin with sulfonic acid group on the macromolecule chain is dissociated in water. The acidity is very strong, equivalent to the acidity of hydrochloric acid, sulfuric acid, etc. Applicable in the pH range of 0-14. The strong acid ion exchange resin with styrene divinylbenzene copolymer as the parent is the ion exchange resin with the most extensive routes and the largest output in Sichuan. It is prepared by the reaction of polystyrene crosslinking beads with concentrated sulfuric acid. This type of strong acidic cation exchanger is not only widely used in water treatment, but also can replace inorganic acids as catalysts and has been applied in chemical production. The ion exchange resin containing carboxylic acid group, phosphoric acid group and phenol group is weak acid, and the weak acid resin containing carboxylic group is the most widely used. Weak acid resin can only perform cation exchange function in near neutral and alkaline solutions. It is widely used in water treatment, pharmaceutical hydrometallurgy, etc. It has also been widely used in biochemical pharmaceuticals.

Classification