Fig. 3

Quantitative ¹¹⁹Sn solid-state NMR analysis of Sn sites in Sn-β. Deconvolution of ¹¹⁹Sn MAS NMR spectra of ¹¹⁹Sn-β zeolites dehydrated at 393 K (a) and 673 K (b). Solid lines show experimental (black) and simulated (green) spectra, and dash lines show the individual components of closed (blue) and open (red) Sn sites