Crystal structure of indium-exchanged zeolite A containing sorbed disulfur
Article Abstract:
The chemical structure of indium (In)(super 0), In+ and In2+ in zeolite A and the sorption properties of sulfur into indium zeolites were examined. Elemental sulfur was exposed to completely indium-exchanged zeolite to achieve this end. Crystals of the zeolite were prepared and analyzed. The structure per unit cell was recorded at 8.75 indium atoms or ions distributed over six crystallographic sites per unit cell of In(sub 8-A).(In)0.75(S2). The indium ions farthest from the framework oxygens exhibited the smallest cationic charges.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Partial structures of fully dehydrated Ni30Na7Cl12Si137Al55O384 (solid-state nickel(II)-exchanged zeolite Y) and of its D2O sorption complex by pulsed-neutron diffraction
Article Abstract:
A study was conducted to analyze the partial structures of fully dehydrated Ni30Na7Cl12Si137Al55O384 (solid-state nickel(II)-exchanged zeolite Y) and of its D2O sorption complex. Pulsed-neutron diffraction was utilized to carry out the analysis. The General Purpose Powder Diffractometer equipment was utilized to obtain neutron diffraction data. Experimental results indicated that the zeolite's cavities supported exchangeable cations that balance the negative charge of the aluminosilicate framework.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Crystal structure of a zinc sorption complex of Cd2+-exchanged zeolite X containing tetrahedral Cd2+(sub 4)(mu(sub 3)-Zn0Cd2+Zn0)(sub 4) clusters
Article Abstract:
Zn vapor was introduced to fully dehydrated Cd2+-exchanged zeolite X (Cd46Si100Al92O384 per unit cell). However, the sorbed Zn did not react with the Cd2+ ions in this structure. Results also showed that eight Cd2+ ions at site I' and eight of the 12 Cd2+ ions at site II captured 16 Zn atoms to form two Cd2+(sub 4)(mu(sub 3)-Zn0Cd2+Zn0)(sub 4) clusters per unit cell. The molecular structures of these clusters are presented.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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