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Thickness‐controlled Growth of Silicalite Membranes on Cerium Oxide Supports
Author(s) -
Krumeich Frank,
Abegg Sebastian,
Güntner Andreas T.
Publication year - 2020
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202000078
Subject(s) - zeolite , scanning electron microscope , materials science , cerium oxide , chemical engineering , transmission electron microscopy , energy dispersive x ray spectroscopy , cerium , oxide , layer (electronics) , hydrothermal circulation , ceramic , hydrothermal synthesis , mineralogy , catalysis , composite material , nanotechnology , metallurgy , chemistry , organic chemistry , engineering
Layers of silicalite crystals with controlled thicknesses were deposited on cerium oxide porous disks by hydrothermal synthesis. The morphology and structure of the ceramic composites were characterized by scanning electron microscopy (SEM), X‐ray powder diffraction (XRD) and (scanning) transmission electron microscopy ((S)TEM) and compared to zeolite layers on aluminum oxide supports. The elemental distribution, as visualized in elemental mappings by energy‐dispersive X‐ray spectroscopy (EDXS), confirm the formation of the zeolite layer and reveal the incorporation of zeolite crystals inside the pores of the supporting oxide. Zeolite layer integrity was assessed by gas permeation tests. These composites can be utilized as gas separators and can increase the selectivity of gas sensors or applied in catalysis.