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J. Korean Ceram. Soc. > Volume 39(10); 2002 > Article
Journal of the Korean Ceramic Society 2002;39(10): 988.
doi: https://doi.org/10.4191/kcers.2002.39.10.988
Lanthanum Stannate Pyrochlore 촉매를 이용한 전기화학 촉매 셀의 제조 및 NOx 분해 특성 분석
박사로한, 문주호
연세대학교 세라믹공학과
Fabrication of an Electrochemical Cell using a Lanthanum Stannate Pyrochlore Catalyst and its Characterization of NOx Gas Decomposition
Saro-Han Park, Joo-Ho Moon
Department of Ceramic Engineering, Yonsei University
ABSTRACT
Electrochemical cells for decomposing $NO_x$ were fabricated using a hydrothermally synthesized lanthanum stannate pyrochlore catalyst. Thick film of the catalyst on the YSZ electrolyte disk was produced by screen-printing a paste consisted of $La_2Sn_2O_7$ and YSZ powders. Direct current was applied to the electrochemical cell to promote an electrochemical catalytic decomposition of $NO_x$. $NO_x$ decomposition behavior of the rectant gas mixture ($NO_x$ 0.1%, $O_2$ 2%) was investigated at 700${circ}C$ under atmosphere pressure using on-line gas chromatography and $NO_x$ analyzer. It was observed that microstructure of the catalyst layer significantly influences the electrocatalystic decomposition of $NO_x$.
Key words: No decomposition, Electrochemical cell, Pyrochlore
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