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Reactive Al-O-Al sites in a natural zeolite: Triple-quantum oxygen-17 nuclear magnetic resonance
Reactive Al-O-Al sites natural zeolite Triple-quantum oxygen-17 nuclear magnetic resonance
2012/4/1
In framework aluminosilicate materials (e.g., feldspars, zeolites and many others), it is generallyassumed that AlOtetrahedra do not share corners, i.e., that Al-O-Al oxygen sites are avoided whenstoi...
Ion-Exchange Properties of the Natural Zeolite Erionite
Erionite Ion exchange Offretite Selectivity Zeolite Zeolite T
2012/2/10
Natural erionite was exhaustively ion exchanged with Na+ to give the anhydrous unit-cell composition (K1.9Na5.4Ca0.1Mg0.1)[(AlO2)7.4(SiO2)28.6]. A thermodynamic study of alkali and alkaline earth meta...
Natural zeolites in altered volcanic tuff beds occurring in southeastern Oregon and north central Nevada show layers of mordenite, clinoptilolite, and erionite as principal minerals with occasional oc...
