fig5
From: Recent advances in shape selectivity of MFI zeolite and its effect on the catalytic performance
Figure 5. (A) and (B) Possible paths for p-xylene diffusion at the intersection channels. Free energy profiles with a standard deviation of p-xylene and m-xylene diffusing. (C) Along straight channels and (D) along sinusoidal channels obtained from blue-moon simulations. The simplified mechanistic framework of toluene methylation to p-xylene and m-xylene by combing the isomerization and diffusion along (E) straight and (F) sinusoidal channels. The figure is used with permission from Springer Nature[55].
