Abstract
Sodium nitrate is occluded
by the zeolites NaX and NaA.
In addition to occluded nitrate, adherent nitrate appears to contribute to the
infrared spectra of most zeolite+NaNO3 systems. A lattice mode has
been detected for the system NaA+NaNO3, which is interpreted in
terms of an ordered occluded phase. Evidence indicates that both occlusion and
cation exchange occur in the system NaA+LiNO3. The extent of
occlusion of NaNO3 by NaX is much less
than by NaA. Interaction between the zeolitic cation
and the occluded phase is not significant even when the zeolitic cation is
strongly coordinating (e.g. Zn2+). Little, if any, KSCN is occluded
by zeolites NaA and NaX,
and KSCN appears to react on the internal surface of ZnX.
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3 articles.
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