Abstract

 
 
 Organomineral ionites have been synthesized, in which natural mineral sorbent is chemically bound to organic part of a molecsule, containing ionogen groups. Ionogen groups of these ionites contribute to efficient exchange in water solutions. They might be used for cleaning drainage waters and technical solutions, as well as for purification of medicinal preparations from various admixes. Hydrogen forms of natural zeolite - clinoptilolite and bromoacetic acid were used to resolve this problem. Chemical modification of clinoptilolite, by inculcation of ionogen groups into zeolite skeleton, enables us to increase significantly ionite exchange capacity. Static exchange capacity of a cationite with carboxyl ionogen groups increases from 0,1 - 0,9 (for chemically unmodified zeolite) to 5- 6 мg.equiv./g.
 
 
Highlights
Organic monomers with double links, containing ionogen groups were used to synthesize ionites
In that method of ionite synthesis, ionogen groups were not introduced into zeolite skeleton, capable to participate in ion exchange process
Cationite on the basis of modified natural zeolite – clinoptilolite and bromoacetic acid was obtained as follows: natural zeolite–clinoptilolite was crushed into particles of 1-2 mm, than 0,5 N hydrochloric acid solution was added to it and the mix was heated for 4-5 hours
Summary
Organic monomers with double links, containing ionogen groups were used to synthesize ionites. The present work pursued to synthesize ionites in which organic molecule, containing ionogen groups, would be chemically bound to zeolite skeleton. The other component was bromoacetic acid (BrCH2COOH), which due to increased activity of bromine atom comes into reaction with hydrogen atom of H-form zeolite.
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