Fully dehydrated, fully Cs+-exchanged zeolite A has been prepared by reducing the Na+ ions in dehydrated zeolite 4A with caesium vapour at 623 K, to give Cs12–A·1/2Cs which contains (Cs4)3+, followed by baking the occluded caesium atoms out at 1273 K to give Cs12–A; both structures were determined by single crystal X-ray diffraction methods.
N. Heo and K. Seff, J. Chem. Soc., Chem. Commun., 1987, 1225 DOI: 10.1039/C39870001225
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