Experimental and Theoretical Evidence for the Promotional Effect of Acid Sites on the Diffusion of Alkenes through Small?Pore Zeolites

The influence of the acid site density on diffusivities alkanes and alkenes through 8-ring windows SAPO-34 was probed using a complementary set ab initio MD simulations experimental techniques (PFG-NMR TAP pulse-response measurements). presence Brønsted sites found to have clear promotional effect alkene diffusion but it does not alkane diffusion.