Fig. 2: Atomic interface structures in ZSM-5-MT catalyst.
From: Modulating inherent lewis acidity at the intergrowth interface of mortise-tenon zeolite catalyst
a ADF-STEM image of ZSM-5-MT from the [001] projection. b Magnified iDPC-STEM image of intergrowth interface in the area marked by the blue frame in (a). The intergrowth area between mortise and tenon is marked by red frames. c Structural models of ZSM-5 from the [001] projection. d Magnified iDPC-STEM image (top) and simulated iDPC-STEM image of ZSM-5 lattice in a pure mortise or tenon area (bottom) from the [001] projection. e-g Magnified iDPC-STEM image, simulated iDPC-STEM image and structural model of overlapped lattices in the intergrowth area by stacking two models in (c) along the c-axis of ZSM-5. h Structural model of the interface in ZSM-5-MT showing the partial missing of O atoms due to the slight lattice mismatch. i Magnified iDPC-STEM images of single-crystal (top) and intergrowth (bottom) areas from the [001] projection and corresponding intensity profiles. Eight positions and intensities of eight O atom columns can be identified in each profile. j Statistical results of the normalized intensities of O peaks in single-crystal (red symbol) and intergrowth (black symbol) areas. In statistics, 10 data are included for each area and different shapes of symbols are corresponding to the data in different profiles (Supplementary Figs. 12–14).
