NO Decomposition in the Presence of Excess O2 Using the Electrochemical Cells with Pd Electrodes Treated at High Temperature and Coated with La1−x Srx CoO3

Nakatani, Jiro; Ozeki, Yuji; Sakamoto, Kousuke; Iwayama, Kazuyoshi

doi:10.1246/cl.1996.315

Cited by 21 publications

(20 citation statements)

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“…Recently, many attempts to improve the properties of electrochemical cells operating in the presence of excess oxygen have been carried out by using different catalysts as the cathode material (Hibino, 2000a(Hibino, , 2000bMarwood & Vayenas, 1997;Nakatani et al, 1996;Walsh & Fedkiw, 1997). Walsh (Walsh & Fedkiw, 1997) proposed substitute dense Pt electrodes to the porous platinum and to use a mixture of ionic (CeO) and electronic (Pt) conductors as a porous cathode.…”

Section: Traditional Type Of Electrochemical Cells For No Decompositionmentioning

confidence: 99%

Electrochemical Cells with Multilayer Functional Electrodes for NO Decomposition

Бредихин¹,

Awano²

2012

Electrochemical Cells - New Advances in Fundamental Researches and Applications

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Section: Traditional Type Of Electrochemical Cells For No Decompositionmentioning

confidence: 99%

Electrochemical Cells with Multilayer Functional Electrodes for NO Decomposition

Бредихин¹,

Awano²

2012

Electrochemical Cells - New Advances in Fundamental Researches and Applications

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“…Recently, many attempts to improve the properties of electrochemical cells operating in the presence of excess oxygen have been carried out by using different catalysts as the cathode material [24][25][26][27][28]. Walsh and Fedkiw [25] proposed substitute dense Pt electrodes to the porous platinum and to use a mixture of ionic (CeO) and electronic (Pt) conductors as a porous cathode.…”

Section: Traditional Type Of Electrochemical Cells For No Decompositionmentioning

confidence: 99%

“…To improve the selectivity for NO gas adsorption and decomposition in the presence of the oxygen excess, Iwayama et al [24,29] proposed to coat Pt cathode by different metals or metal oxide. Decomposition activity was measured on metal oxide/Pd(cathode)/YSZ/Pd(anode) at 773-973 K and 3.0 V of applied voltage in a flow of 50 ml/ min containing 1,000 ppm of NO and 6% of O 2 in helium.…”

Section: Traditional Type Of Electrochemical Cells For No Decompositionmentioning

confidence: 99%

Electrochemical reactors for NO decomposition. Basic aspects and a future

Бредихин

Hamamoto

Fujishiro

et al. 2008

Ionics

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The electrochemical reduction of nitric oxide in the presence of the excess oxygen was reviewed. It was shown that the selectivity and activity of the cathodes is strongly dependent on the composition and on the microstructure of the cathode material. A concept of electrochemical reactor with multilayer electro-catalytic electrode was proposed and successfully designed in Advanced Manufacturing Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Nagoya, Japan. The typical values of current efficiency in such electrochemical reactors are of the order of 10-20% at gas composition: 1,000 ppm NO and 2% O 2 balanced in He and at gas flow rate 50 ml/min. The value of current efficiency depends on the functional multi-layer electrode composition, structure, and operating temperature. Such electrochemical reactors show the value of NO/O 2 selectivity (ν sel ) higher than 5 (ν sel >5) at intermediate temperature and up to ν sel =25 at low temperature operation. It was shown that multilayer electro-catalytic electrode should consist at list from three main functional layers: cathode, electro-catalytic electrode, covering layer, in order to operate as an electrode with high selectivity.

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“…Electrochemical cells have attracted attention as a new type of reactor that can permeate only a specific ion by applying a direct voltage to the cell. Recently, the electrochemical decomposition of NO x using an electrochemical cell composed of a solid electrolyte and metal electrodes has been proposed [1,2]. In these electrochemical cells, high current density is required for NO x decomposition in the presence of excess O 2 , which is adsorbed to the cathode in preference to NO x .…”

Section: Introductionmentioning

confidence: 99%

High Selective deNOx Electrochemical Cell with Self-Assembled Electro-Catalytic Electrode

et al. 2004

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A new family of electrochemical cells for decomposition of NO gas in the presence of excess O 2 , in which the cathode was covered with mixed oxide layer of NiO and YSZ (electro-catalytic electrode) were designed and investigated. The deNO x properties were increased by microstructural and compositional control of the electro-catalytic electrode. Nano-size Ni grains were self-assembled at NiO/YSZ interfaces by oxidationreduction reaction of the NiO during the cell operation. In order to use the reduced Ni for NO decomposition reaction effectively, the authors investigated multilayering of the electro-catalytic electrode. Through this process, the adsorption of coexisting O 2 was prevented and the deNO x properties of the electrochemical cell were improved.

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NO Decomposition in the Presence of Excess O2 Using the Electrochemical Cells with Pd Electrodes Treated at High Temperature and Coated with La1−x Srx CoO3

Abstract: Decomposition of NO in the presence of oxygen was promoted by using an electrochemical cell composed of YSZ and non-porous Pd electrodes. The NO conversion into N2 was successfully improved by coating the Pd electrodes with a perovskite oxide (La1−xSrxCoO3).

Cited by 21 publications

References 1 publication

Electrochemical Cells with Multilayer Functional Electrodes for NO Decomposition

Electrochemical Cells with Multilayer Functional Electrodes for NO Decomposition

Electrochemical reactors for NO decomposition. Basic aspects and a future

High Selective deNOx Electrochemical Cell with Self-Assembled Electro-Catalytic Electrode

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