**Author details**

Aiymgul M. Akimkhan *Laboratory of Ion Exchange Resins, A.B. Bekturov Institute of Chemical Sciences, Ministry of Education and Science, Kazakhstan* 

### **7. References**

280 Ion Exchange Technologies

technological solution.

**Author details** 

Aiymgul M. Akimkhan

existing vast experimental and theoretical material.

*Ministry of Education and Science, Kazakhstan* 

*Laboratory of Ion Exchange Resins, A.B. Bekturov Institute of Chemical Sciences,* 

metals).

process of extraction, as well as the influence of the porous structure upon sorption of organic compounds (acetone, toluene, acetic acid) and inorganic ions (the ions of nonferrous

Physico-chemical study of the composition and thermal stability of natural zeolite allowed to determine the ratio of Si / Al as a 3,8, a high thermal stability, and to find optimal conditions for acid activation of the zeolite with the aim further modification of the samples with epoxy and amine reagents. It is shown that, depending on the nature of adsorbate and adsorbent type can be selected appropriate modes of activation of natural zeolite as a result

It has been shown for the first time by the method of IR-spectroscopy that a chemical interaction takes place between the main centers of natural zeolite and carboxylic groups of aminoacetic acid in the process of their mechanic-chemical activation, as well as the formation of a coordination bond between the aluminum atoms of its lattice and nitrogen of aminoacid. Stereoscopic studies have established considerable changes in the chemical structure of the polymer as a result of mechanic-chemical modification of natural zeolite by epoxy resin. The extraction data of the system polymer-zeolite testify to the physical and chemical nature of adsorption bonds between the molecules of resin and the surface of alumosilicate. Incidentally, the contribution of chemosorption bonds is different in

Development of methods for modification of natural zeolite by various oligomers and functional materials opens up the possibility of synthesis of chemically modified materials for ion-exchange technology. Therefore, an interest is evoked by a profound research of the processes, proceeding on the surface of the modified natural sorbents, the state of engrafted compounds and creation of methods of purposeful alternation of the structure of the engrafted layer and the properties of the modified sorbents, connected with this structure, as well as establishing of a possibility to use them in the modern sorption processes, creation of new competitive technologies for the extraction of metal ions from

The profound theoretical and practical studies of the methods of modification of natural sorbents will result in the development of available methods of obtaining of organomineral sorbents as the most problematic aspect of the development of the modern ion-exchange technology and related fields. And the achievements in this field should be connected, first of all, with the physical-chemical approach to the assessment and generalization of the

of vapor sorption studies of various organic solvents, water and acetic acid.

dependence of the ratio of the components and duration of the process.


[20] Ergozhin E.E., Akimbaeva A. M. Organomineral system based on oligomers. In: Proceedings of the IX International Conference on the chemistry and physical chemistry of oligomers, 13–16 september 2005, Odessa,Ukraine.

**Chapter 11** 
