Investigation of sodium cations in dehydrated zeolites LSX, X, and Y by 23Na off-resonance RIACT triple-quantum and high-speed MAS NMR spectroscopy.
Caldarelli S, Buchholz A, Hunger M.
Caldarelli S, et al.
J Am Chem Soc. 2001 Jul 25;123(29):7118-23. doi: 10.1021/ja0102538.
J Am Chem Soc. 2001.
PMID: 11459492
In the case of zeolites Y (nSi/nAl = 2.60), we studied materials with sodium exchange degrees between 0 and 95%. The recently introduced ORIACT method (Caldarelli, S.; Ziarelli, F. J. Am. Chem. Soc. 2000, 122, 12015) significantly improved the resolution of the MQMA …
In the case of zeolites Y (nSi/nAl = 2.60), we studied materials with sodium exchange degrees between 0 and 95%. The recently introduced ORI …