2017
DOI: 10.1016/j.memsci.2016.09.002
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Koji Kida, Yasushi Maeta, Katsunori Yogo

Abstract: Pure silica CHA-type zeolite (Si-CHA) membranes were synthesized by a hydrothermal secondary growth method on porous α-alumina supports. Using Si-CHA seed crystals as a crystalline nuclei allowed the formation of a dense Si-CHA layer. The Si-CHA membranes prepared in this study showed excellent gas permeance derived from their large pore volume and effective molecular sieve performance for gas separation. The Si-CHA membranes exhibited excellent H 2 and CO 2 permeance of 1.1 × 10 −6 and 1.7 × 10 −6 mol/m 2 sPa…

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