cation resin

Cation exchange resin, also known as cation exchange resin, has the characteristics of high exchange capacity, fast exchange speed, and good mechanical strength. It is particularly suitable for preparing soft water and pure water for boiler use. Sekosisi has developed resins that can also be used as catalysts and dehydrating agents, as well as in wet metallurgy, sugar and pharmaceutical industries.

The ion exchange process is a reversible chemical reaction between ions in the liquid phase and ions in the solid phase. When certain ions in the liquid phase are preferred by the ion exchange solid, they will be adsorbed by the ion exchange solid. To maintain the electrical neutrality of the aqueous solution, the ion exchange solid must release equivalent ions back into the solution.

This type of resin (IONRESIN) contains a large number of strong acidic groups, such as sulfo-sO3H, which are easily dissociated into H+in solution, thus exhibiting strong acidity. After resin dissociation, the negatively charged groups contained in the body, such as SO3-, can adsorb and bind other cations in the solution. These two reactions exchange H+in the resin with cations in the solution.

After a period of use, the resin needs to undergo regeneration treatment, which involves using chemicals to reverse the ion exchange reaction and restore the functional groups of the resin to their original state for reuse. The above-mentioned cationic resin is regenerated with strong acid, during which the resin releases adsorbed cations, which then combine with H+to restore its original composition.

This type of resin (IONRESIN) contains weak acidic groups, such as carboxyl COOH, which can dissociate H+in water and become acidic. The remaining negatively charged groups, such as R-COO - (where R is a hydrocarbon group), after the dissociation of the resin can adsorb and bind with other cations in the solution, thereby generating cation exchange reactions. This type of resin has weak acidity, meaning it is difficult to dissociate and undergo ion exchange at low pH, and can only function in alkaline, neutral, or slightly acidic solutions (such as pH 5-14). Sekosisi resin is also regenerated using acid (which is easier to regenerate than strongly acidic resins).