Fig. 2 | Communications Chemistry

Fig. 2

From: Direct observation of tin sites and their reversible interconversion in zeolites by solid-state NMR spectroscopy

Fig. 2

Identification of open Sn sites by proton-detected 1H/119Sn correlation NMR. Two-dimensional 1H {119Sn} HMQC MAS NMR spectra of 119Sn-β a without dehydration, b dehydrated at 298 K, c dehydrated at 393 K without 119Sn decoupling, and d dehydrated at 393 K with 119Sn decoupling. Projections of 1H and 119Sn dimensions are shown in black. Representative slices along −429 ppm (red) and −443 ppm (blue) in the F1 dimension are also displayed in c and d

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