Solid-state NMR evidence for the strong binding of methanol prior to carbon–carbon bond formation during the synthesis of gasoline on molecular sieve catalysts

Abstract

Slow magic-angle spinning ¹³C NMR spectroscopy reveals that strongly bound surface Me–O–Si groups are formed at 250 °C when methanol is adsorbed on SAPO-5; by contrast, in zeolite H-ZSM-5 methanol becomes strongly bound to the framework at room temperature without the formation of methoxy groups.