fig9

Figure 9. (A) The schematic of the in situ STEM experimental setup during benzene adsorption and desorption. (B) Dynamic evolution of zeolite channels and corresponding host-guest interactions in benzene desorption. (1)-(6) iDPC-STEM snapshots of a benzene@MFI specimen along the [010] projection at different stages during the cyclic benzene desorption process. (7) Magnified iDPC-STEM images of straight channels extracted from (1) to (6), indicating the changes in benzene contrast and channel geometry at different stages. (8) Evolution of the normalized benzene/zeolite framework contrast ratio and corresponding aspect ratios of Si₁₀ opening pores during the in situ benzene uptake and release process. (9) Statistical distribution of benzene orientations at different stages of benzene desorption. Scale bars, 2 nm [(1) to (6)], 500 pm (7)^[49]. Copyright 2022, AAAS.