Add time:09/25/2019         Source:infona.pl

A new inorgano-organic ion exchanger has been prepared by anchoring chromotropic acid (4,5-dihydroxynapthalene-3,7-disulphonic acid, disodium salt) onto zirconium molybdate (ZM). The inorgano-organic ion exchanger has been termed ZMCA. ZM and ZMCA have been characterised for elemental, spectral and thermal analyses. Chemical stability in several acidic, basic and organic media has been assessed. Ion exchange capacity (i.e.c.) for these materials has been determined and the effect of heating on i.e.c. has been studied. The distribution coefficient Kd for several metal ions has been determined and compared. The new material ZMCA exhibits high Kd values for several metal ions compared with ZM. It is also stable up to a fairly high temperature, besides exhibiting stability in different acidic, basic and organic media. ZMCA thus exhibits the characteristics of a promising ion exchanger.

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