Table 1.

Framework composition as determined per ICP, isolated Si fraction as determined from ²⁹Si-NMR spectra and the estimated framework negative charge.

Sample	xSi	xAl	xP	Isolated Si	Estimated
				fraction,	framework
				from NMR	negative charge
AlPO-42	–	0.53	0.47	–	0
SAPO-42-104	0.04	0.50	0.46	0.24	0.010
SAPO-42-24	0.05	0.52	0.43	0.82	0.041
SAPO-42-13	0.1	0.54	0.36	0.8	0.080
Si-LTA	1	–	–	–	0
LTA-31	0.97	0.03	–	–	0.032
LTA-6	0.83	0.17	–	–	0.167
LTA-4.5	0.78	0.22	–	–	0.222
LTA-3	0.67	0.33	–	–	0.333
AlPO-34	–	0.57	0.43	–	0
SAPO-34-10	0.10	0.55	0.35	0.975	0.097
SAPO-34-7	0.18	0.51	0.31	0.814	0.146
Si-CHA	1	–	–	–	0
CHA-19	0.95	0.05	–	–	0.052
CHA-18	0.94	0.06	–	–	0.055
CHA-6	0.84	0.16	–	–	0.164
CHA-3	0.65	0.35	–	–	0.348
AlPO-5	–	0.54	0.46	–	0
SAPO-5-46	0.04	0.53	0.43	0.6	0.022
SAPO-5-34	0.07	0.54	0.40	0.45	0.030
Si-AFI	1	–	–	–	0