Stroganova Е.А., Sherstobitova T.Y., Ovechkin М.V.
STUDY OF CR-MIL-101 SORPTION CAPACITY RELTIVELY TO IONS OF COPPER ^{[№ 10 ' 2015]}
Sorption properties of the metalloorganic coordination polymer (MCP) on the basis of a tereftalat of Cr-MIL-101 chrome (III) in relation to copper (II) ions are studied. Influence рН on a charge of the taken ion, and also equilibrium parameters of sorption (the full static exchange capacity (FSEC), distribution coefficient, selectivity coefficient) is defined. It is shown that MKP can be applied in processes of sorption concoction of copper (II) from water solutions in wide area рН, but the greatest capacity of a sorbent is observed at pH = 8. This supervision can be explained with introduction in large cavities of a framework of metalloorganic polymer of mix of polynuclear ions (Cu₂(OH)₂²⁺, Cu₂(OH)³⁺, Cu₃(OH)₄²⁺) and the oligomers of molecular oxidic clusters of copper. This assumption is confirmed by experimentally established total fractional charge of the taken particles, and also data of the electronic microscopic analysis of cupriferous samples of a sorbent. Results of work allow to consider metalcomplex Cr-MIL-101 polymer as a sorbent carrier of large hydrolytic forms of copper.