Electrochemical Promotion of NO Reduction by Propene on Pt/YSZ

被引：18

作者：

Beguin, B. ^{[1
]}

Gaillard, F. ^{[1
]}

Primet, M. ^{[1
]}

Vernoux, P. ^{[1
]}

Bultel, L. ^{[2
]}

Henault, M. ^{[2
]}

Roux, C. ^{[2
]}

Siebert, E. ^{[2
]}

机构：

[1] Univ Lyon 1, CNRS, Lab Applicat Chim Environm LACE, UMR 5634, F-69622 Villeurbanne, France

[2] ENSEEG, CNRS, Lab Electrochim & Phys Chim Mat & Interfaces LEPM, UMR 5631, F-38402 St Martin Dheres, France

来源：

IONICS | 2002年 / 8卷 / 1-2期

关键词：

Platinum; Y2O3; Operating Temperature; C3H6; Current Application;

D O I：

10.1007/BF02377763

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The reduction of NO by C(3)H(6) in the presence of oxygen, is of great environmental importance. Platinum-based catalysts are very active but not selective towards N(2) production and mainly convert NO into N(2)O, which participates to the greenhouse effect. Moreover, their operating temperature window is quite narrow. Electrochemical promotion was used to improve platinum catalytic behaviour. Platinum was deposited on YSZ (Y(2)O(3) - stabilised ZrO(2)), an O(2)-conductor. It was found that a negative current increased the rate of NO reduction and CO(2) formation. This rate enhancement was non-Faradaic with an apparent Faradaic efficiency (A) close to 180 indicating the manifestation of a NEMCA effect. However, the current application had no effect on the N(2) selectivity

引用

页码：128 / 135

页数：8

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