Table 8. Shortest O–H Bonds Distances (Å) in Adsorbed Ammonia Geometries in Zeolites: FAU, AFI, MFI, MEL, CHA, AEI.

	H–O	H–O
FAU (T1)(O4)	1.66	2.16
FAU (T1)(O1)	1.70	1.73
AFI (T1)(O2)	1.63	1.97
MFI (T12)(O25)	1.63	2.03
MEL (T4)(O1)	1.70	1.87
CHA (T1)(O1)	1.82	1.86
AEI (T1)(O4)	1.65	1.95