Abstract
We report 29Si-NMR and magnetic susceptibility measurements in K-absorbing zeolite LTA, K x /Na 12 y K 12(1− y) –Si 12Ai 12O 48 where x=4.5 and 6, and y=0–1. It was confirmed that the ferromagnetic transition occurs in the bulk of K 4.5/K 12-Si 12Ai 12O 48 sample, and that the magnetic transition is very sensitive to Na content, y. It was also shown that the localized magnetic moments are confined to the cavities in the (–Si–O–Al–O–) zeolite framework.
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