Hydrogen Permeation of ZnO-SiC Membranes Encapsulated with SiO<sub>2</sub>

Choi, Hyunji; Hwang, Hyeyoun; Jung, Miewon; Choi, Hyunji; Hwang, Hyeyoun; Jung, Miewon

doi:2014.51.6.566

J. Korean Ceram. Soc. > Volume 51(6); 2014 > Article

Journal of the Korean Ceramic Society 2014;51(6): 566.
doi: https://doi.org/10.4191/kcers.2014.51.6.566

Hydrogen Permeation of ZnO-SiC Membranes Encapsulated with SiO₂

Hyunji Choi, Hyeyoun Hwang, Miewon Jung

School of Biological Sciences and Chemistry/Institute of Basic Science, Sungshin Women's University

ABSTRACT

ZnO and SiC powders were fabricated to make crack-free composite membranes. Parts of some membranes were re-treated with an encapsulation process. These membranes were characterized by XRD, BET, and FE-SEM analyzes. The hydrogen permeation fluxes of the encapsulated and heat-treated membranes after encapsulation were observed using Sievert's type equipment. Values were measured at 1 bar with increasing temperatures. The obtained values of encapsulated and further heat-treated membrane at 298 K were $4.20{times}10^{-6}$ and $8.64{times}10^{-5}mol/m^2sPa$, respectively.

Key words: Composite membrane, Encapsulation process, Hydrogen permeation