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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 11, Number 5
BKCSDE 11(5)
May 20, 1990

Title	Three Binary Ion-Exchange Isotherms in Zeolite A : Cs+-Ag+, Ag+-Na+, and NH4+-Na+
Author	Nam Ho Heo*, Yang Kim, Gloria C. H. Lin, Karl Seff
Keywords
Abstract	Three binary ion-exchange isotherms of zeolite A have been determined using 0.1 M solutions of the aqueous nitrates for the one-step preparation of particular mixed-cation zeolite A compositions. Analyses were done primarily by flame emission spectrometry (FES), together with crystallographic determinations of Cs+ and colorimetric determinations of NH4+. Corrections for a presumed impurity of extra-lattice species in powder sample were made for the determination of Na+. The Cs+-Ag+ isootherm indicates a strong selectivity for Ag+ through the entire range of zeolite composition. The Ag+-Na+ isotherm agrees very closely with that reported by Sherry and Walton, and that of NH4+-Na+ resembles those obtained using zeolite pellets.
Page	407 - 410
Full Text	PDF

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