Silica supported Sn catalysts with tetrahedral Sn sites for selective isomerization of glucose to fructose

Lewis acid catalyzed isomerization of glucose to fructose is an important reaction for production renewable chemicals. Here, we show the synthesis active and selective catalyst this by controlling Sn dispersion on SBA15. loading 1 wt. % over SBA15 (Sn/SBA15) maximized formation tetrahedral species surface. Increasing or changing support caused SnO2 clusters which reduced selectivity. A mechanism based condensation with silanol group proposed. The showed high selectivity 93 after 2 h 57 yield. was proven isotopic tracer study using d-glucose-2-d. deactivated in third cycle owing byproduct deposition, but activity restored recalcining catalyst.