LITHIUM-ION SIEVE PROPERTY OF λ;-TYPE MANGANESE OXIDE

作者: KENTA OOI , YOSHITAKA MIYAI , SHUNSAKU KATOH

DOI: 10.1080/07366298708918581

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摘要: ABSTRACT The adsorptive properties of A-Mn02for mono and divalent metal ions were investigated by pH titration measurements the distribution coefficients(Kd's) ions. curve showed an apparently monobasic acid type for a H+-Li+exchange. Those H+-K+and H+-Cs+exchanges nearly same as that blank titration. lithium ion uptake increased with increasing solution reached 5 meq/g at 11. X-ray diffraction analyses adsorption caused increase in lattice constant cubic unit cell. potassium cesium uptakes zero over range between 4 A-Mn02showed remarkably high Kd value ions, compared to cation exchange resin. selectivity sequences Na+< K+< Rb+< Cs+<< Li+for alkali Mg2+< Ca2+< Sr2+< Ba2+for alkaline earth Ni2+< Zn2+< Co2+< Cu2+for transition

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