
What is ion exchange resin ?
Ion
exchange resin is a kind of insoluble polymer compound with functional group
(active group of ion exchange), network structure, which is also a kind of polymer that acts as a
medium for ion exchange.
Ion
exchange resin provids a large surface area on and inside them, and the capture
of ions is accompanied by the release of other ions, so this process is called
ion exchange.
According
to the difference of ion removal, ion exchange resin can be divided into cation
exchange resin and anion exchange resin. As the name suggests, the resin that
can remove cations is called cation exchange resin, and the resin that can
remove anions is called anion exchange resin.
According
to pore structure, ion exchange resins are divided into two types: gel type and
macroporous type. All with physical pore structure called macroporous resin.
Ion
exchange resins are widely used in separation and purification. The most common
examples are water softening and water purification.
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