Nano-Hollow Zeolite-Encapsulated Highly Dispersed Ultra-Fine Fe Nanoparticles as Fischer–Tropsch Catalyst for Syngas-to-Olefins

A nano-hollow zeolite-encapsulating ultra-fine Fe nanoparticle catalyst denoted as Fe@n-hS-HT was successfully synthesized through a simple water steam treatment of the Fe@n-hS prepared by “dissolution–recrystallization” (D-R) method. The had hierarchical porous structure and high dispersion Fe2O3 particles with size 3.4 nm. Furthermore, results several characterization methods, such XRD, HAADF-STEM, H2-TPR, further demonstrated transformation skeleton in into Fe2O3, which uniformly dispersed catalyst. Meanwhile, significantly higher selectivity yield C2-C4= than reference catalysts Fe/S Fe@n-hS, provided strong proof for confined catalysis metal@zeolite