. "Urbanov\u00E1, Martina" . "Gao, Fei" . . . . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Journal of Physical Chemistry C" . "Complex Analysis of the Aluminum Siting in the Framework of Silicon-Rich Zeolites. A Case Study on Ferrierites"@en . "Lucero, Melissa Jeanine" . . . "We present a multistep method combining multispectroscopic experiments with DFT calculations to determine the complete Al distribution in silicon-rich zeolites, independent of the presence of Al\u2013O\u2013(Si\u2013O)n\u2013Al (n = 1, 2) sequences in their frameworks. 29Si MAS NMR spectroscopy is employed to confirm the absence of Al\u2013O\u2013Si\u2013O\u2013Al in the framework of silicon-rich zeolites while 27Al 3Q MAS NMR spectroscopy and DFT computations of 27Al isotropic chemical shifts serve to determine the locations of isolated Al atoms. The maximum ion-exchange capacity of zeolites for [Co2+(H2O)6]2+ reveals the presence of close Al atoms (i.e., those Al atoms which are able to balance [Co2+(H2O)6]2+ ions). Then visible spectroscopy of the bare Co(II) ion in the dehydrated zeolite of the samples with close Al is utilized to identify the locations of the corresponding Al\u2013O\u2013(Si\u2013O)2\u2013Al pairs in a ring."@en . . "Li, Chengbin" . . "10.1021/jp200310b" . "[DD1297EFCB8A]" . . "Tvar\u016F\u017Ekov\u00E1, Zdenka" . . "We present a multistep method combining multispectroscopic experiments with DFT calculations to determine the complete Al distribution in silicon-rich zeolites, independent of the presence of Al\u2013O\u2013(Si\u2013O)n\u2013Al (n = 1, 2) sequences in their frameworks. 29Si MAS NMR spectroscopy is employed to confirm the absence of Al\u2013O\u2013Si\u2013O\u2013Al in the framework of silicon-rich zeolites while 27Al 3Q MAS NMR spectroscopy and DFT computations of 27Al isotropic chemical shifts serve to determine the locations of isolated Al atoms. The maximum ion-exchange capacity of zeolites for [Co2+(H2O)6]2+ reveals the presence of close Al atoms (i.e., those Al atoms which are able to balance [Co2+(H2O)6]2+ ions). Then visible spectroscopy of the bare Co(II) ion in the dehydrated zeolite of the samples with close Al is utilized to identify the locations of the corresponding Al\u2013O\u2013(Si\u2013O)2\u2013Al pairs in a ring." . . "Complex Analysis of the Aluminum Siting in the Framework of Silicon-Rich Zeolites. A Case Study on Ferrierites"@en . "Li, Chengbin" . . . . . . . "Complex Analysis of the Aluminum Siting in the Framework of Silicon-Rich Zeolites. A Case Study on Ferrierites" . "9"^^ . . . "ferrierites; zeolites; aluminosilicates"@en . "115" . . "RIV/61388955:_____/11:00360036!RIV12-GA0-61388955" . "P(GA203/09/1627), P(GP203/08/P593), P(IAA400400812), P(IAA400400904), P(IAA400400908), P(KAN100400702), Z(AV0Z40400503)" . . "Klein, Petr" . "9"^^ . "22" . . . "Sklen\u00E1k, \u0160t\u011Bp\u00E1n" . "Complex Analysis of the Aluminum Siting in the Framework of Silicon-Rich Zeolites. A Case Study on Ferrierites" . "000291079900018" . "D\u011Bde\u010Dek, Ji\u0159\u00ED" . . . "Sazama, Petr" . "Gao, Fei" . "191384" . "RIV/61388955:_____/11:00360036" . . "9"^^ . . "Lucero, Melissa Jeanine" . "1932-7447" .