Regensburg 2019 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 24: Topical session (Symposium MM): Correlative and in-situ Microscopy in Materials Research
MM 24.4: Vortrag
Mittwoch, 3. April 2019, 11:15–11:30, H45
3D characterization of macroporous MFI-type zeolite crystals combining nano X-ray tomography and 360° electron tomography — •Dominik Drobek1, Janis Wirth1, Silvan Englisch1, Tobias Weißenberger2, Benjamin Apeleo Zubiri1, Wilhelm Schwieger2, and Erdmann Spiecker1 — 1Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany — 2Chair of Chemical Engineering I (Reaction Engineering), Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
Combining lab-based high-resolution X-ray microscopy (XRM) tomography with 360° electron tomography (ET) enables three-dimensional (3D) imaging of complex material structures across multiple length scales. MFI-type zeolite crystals, which are synthesized utilizing steam-assisted crystallization with mesoporous silica spheres as template[1], with sizes of around 3 μm featuring a well-connected intracrystalline macropore network approach the upper (XRM) and lower (ET) resolution limits of each technique. The combination of both techniques enables a complete 3D reconstruction of the pore structure enabling for quantitative analyses and, furthermore, a direct comparison of the tomography techniques themselves. For optimized imaging conditions individual particles are prepared on a tip utilizing the stamping transfer technique[2] in a dual-beam SEM/FIB instrument. References: [1] A.G. Machoke et al., Adv. Mater. 27 (6) 1066-1070, 2015. [2] T. Przybilla et al., Small Methods 2, 1700276, 2018.