Microstructure-Controlled High Selective DeNOx Electrochemical Reactor

We proposed and investigated a new type of solid-state electrochemical reactor for NO, decomposition. The electrolyte by covering of composite Pt-YSZ cathode with a NiO-YSZ electro-catalytic electrode for enhancing the selective decomposition of NO, gas was designed. The structure of the electro-cat...

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Published inNihon Seramikkusu Kyōkai gakujutsu ronbunshi Vol. 112; no. 1305; pp. S1071 - S1074
Main Authors Hamamoto, Koichi, Hiramatsu, Takuya, Shiono, Osamu, Katayama, Shingo, Fujishiro, Yoshinobu, Bredikhin, Sergei, Awano, Masanobu
Format Journal Article
LanguageJapanese
Published 01.01.2004
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Summary:We proposed and investigated a new type of solid-state electrochemical reactor for NO, decomposition. The electrolyte by covering of composite Pt-YSZ cathode with a NiO-YSZ electro-catalytic electrode for enhancing the selective decomposition of NO, gas was designed. The structure of the electro-catalytic electrode was found to contain self-assembled nano-pores and ionic-electronic conducting network. The nano-pores were located in NiO grains, either near boundary regions of YSZ grains or at the NiO-YSZ interface. These regions have two kinds of active sites provides a way to suppress the unwanted reaction of oxygen gas adsorption and to increase many times the desirable reaction of NO gas decomposition. The correlation between the structure and properties was also studied and reported.
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ISSN:0914-5400