Park, S Song, HS Choi, HJ Moon, J 2024-01-21T06:05:08Z 2024-01-21T06:05:08Z 2021-09-05 2004-11-30 0167-2738 https://pubs.kist.re.kr/handle/201004/137034 NOx decomposition over the electrochemical cell that involves oxygen-conductin g membrane and lanthanum stannate pyrochlore catalysts has been investigated. Removal of the oxygen adsorbed on the active sites, triple-phase boundaries, was prerequisite for electrochemical NOx decomposition. NOx was decomposed only after the minimum current density was applied and its conversion increased abruptly with increasing the applied current. Decomposition activity was also strongly influenced by composition, microstructure, and configuration of the working electrode. Higher decomposition was observed for the cell composed of (La2Sn2O7+YSZ)/Pt Composite electrode than the platinum electrode. Such the cell sintered at 1500 degreesC decomposed 87% NOx at the current density similar to194 mA/cm(2) in the reactant gas containing 2% O-2 whereas 80.5% NOx was reduced at 325 mA/CM2 under 4% O-2 condition. (C) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV NITRIC-OXIDE ZIRCONIA MECHANISM REMOVAL NO decomposition over the electrochemical cell of lanthanum stannate pyrochlore and YSZ composite electrode Article 10.1016/j.ssi.2004.01.078 1 SOLID STATE IONICS, v.175, no.1-4, pp.625 - 629 SOLID STATE IONICS 175 1-4 625 629 scie scopus 000225990500126 2-s2.0-10044231803 Chemistry, Physical Physics, Condensed Matter Chemistry Physics Article; Proceedings Paper NITRIC-OXIDE ZIRCONIA MECHANISM REMOVAL NO decomposition electrochemical cell stannate pyrochlores