The local environments of Si, Al, and P in various samples, including as-synthesized-SAPO-RHO, H-SAPO-RHO, as-exchanged Li-2-SAPO-RHO, and calcined Li-2-SAPO-RHO, were analyzed using solid-state 29 Si, 27 Al, and 31 P MAS NMR spectroscopy (fig. ). The analyses revealed that the incorporation of alkali metal cations did not significantly alter the local environments of these elements.