Seplite

SEPLITE ® Chelating Resin SEPLITE® chelating resin  is ion exchange chelating resins for metals removal, recovery and enrichment. Chelating resins are a class of chelating ion exchange resin   with reactive functional groups that chelate to metal ions. They have the same bead form and polymer matrix as usual ion exchange resin, and the variation in chelating resins arises from the nature of chelating agents linked into a polymer backbone. SEPLITE ® Chelating resins contain a wide range of special functional groups that gives them superior selectivity for specific target metals, Such as SEPLITE®LSC710, which is the iminodiacetic acid bonded in a styrene-divinylbenzene matrix. Other functional groups bound to chelating resins are aminophosphonic acid, thiourea, 2-picolylamine and so on. Chelating resins of ion learning exchange   are almost always used to bind cations, which are found in a big range of metals removal, recovery and enrichment in a dilute s...

The heteroatoms on the chelating resin can form a coordination bond with a metal ion by a pair of lone pairs of electrons, forming a stable structure similar to a small molecule chelate. The polymer with chelation function needs to meet the requirements of two aspects, firstly, it needs to contain a coordination group, and secondly, the coordination group is arranged on the polymer backbone to ensure the space configuration requirements of the chelation process. The main mechanism by which the  chelating resin  acts is that the chelating group forms a stable chelating base with the target ion and thus has a higher selectivity than the ion exchange resin. The chelation reaction is also a reversible reaction, so the chelating resin can also be regenerated. The chelating resin restores activity by a certain regenerant.

Chelating resin is a special ion exchange resin that can form a cross-linking functional polymer with a multi-coordination complex with metal ions. Among the functional groups, there are atoms such as O, N, S, P, and As which have unbonded lone pairs of electrons. The structure of the chelating resin is generally more complicated than that of the  ion exchange resin , but the synthesis method is substantially similar to that of the ion exchange resin, that is, the resin precursor is first synthesized, and then the ligand group is introduced by a functional group reaction. It is also possible to prepare a monomer having a ligand first and then polymerize to obtain a chelating resin, but the foregoing method is more widely used.  Taking the aminocarboxylic acid resin in the N, O ligand chelating resin as an example, the polystyrene precursor can be first subjected to a chloromethylation route or a direct amination method to obtain a primary amine ball, and then a primary amine b...

A chelating resin is a cross-linking functional polymer material capable of forming a multi-coordination complex with a metal ion. The mechanism by which a chelate resin adsorbs metal ions is that a functional atom on a resin undergoes a coordination reaction with a metal ion to form a stable structure similar to a small molecule chelate, and the mechanism of adsorption of the  ion exchange resin  is electrostatic. Therefore, compared with the ion exchange resin, the  chelating resin  has stronger binding ability to metal ions and higher selectivity, and can be widely applied to recovery and separation of various metal ions, amino acid resolution, hydrometallurgy, and pollution prevention. Etc. The main applications of chelating resins are in the field of metal processing, metal recycling, hydrometallurgy, and impurity removal.

Boron is a chemical element with symbol B and atomic number 5.  -Although boron is a relatively rare element in the earth's crust, representing only 0.001% of the crust mass, it can be highly concentrated by the action of water, in which many borates are soluble. -Humans can be exposed to boron through fruit and vegetables, water, air and consumer products. When humans consume large amounts of boron-containing food, the boron concentrations in their bodies may rise to levels that can cause health problems.  Boron can infect the stomach, liver, kidneys and brains and can eventually lead to death. SEPLITE® LSC 780 chelating resin has a high selectivity of boron from potable water. Now click here for more info. Fluorine is a chemical element with symbol F and atomic number 9.   - It is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. Small amounts of fluorine are naturally present in water, air, plants and animals.  - Hu...