Figure 3 : 13C and 11B solid-state MAS NMR spectra for glucose adsorbed on Sn-Beta.

From: Sn-Beta zeolites with borate salts catalyse the epimerization of carbohydrates via an intramolecular carbon shift

Figure 3

(a) 13C MAS NMR cross-polarization (CP) of D-(1-13C)glucose adsorbed on Sn-Beta with a 2:1 glucose:Sn molar ratio; (b) 13C MAS NMR (CP) of D-(1-13C)glucose with SB in a 2:0.5:1 glucose:SB:Sn molar ratio; (c) 13C MAS NMR (CP) of D-(1-13C)glucose with SB after reaction at 358 K for 30 min with a 50:12.5:1 glucose:SB:Sn molar ratio; (d) 11B MAS NMR of Sn-Beta; (e) 11B MAS NMR of SB; (f) 11B MAS NMR of SB adsorbed on Sn-Beta with a 12.5:1 SB:Sn molar ratio; and (g) 11B MAS NMR of D-(1-13C)glucose with SB adsorbed on Sn-Beta in a 2:0.5:1 glucose:SB:Sn molar ratio.