High Faradaic Yields of Non-Faradaic Electrochemical Modification of Catalytic Activity of Propane Oxidation at Pt-YSZ

被引：1
|
作者：
Bumroongsakulsawat, Palang [1 ]
Yindee, Sopawan [1 ]
Vanalabhpatana, Parichatr [2 ]
Assabumrungrat, Suttichai [1 ]
机构：
[1] Chulalongkorn Univ, Dept Chem Engn, Ctr Excellence Catalysis & Catalyt React Engn, Fac Engn, Bangkok 10330, Thailand
[2] Chulalongkorn Univ, Dept Chem, Fac Sci, Bangkok 10330, Thailand
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2016年 / 163卷 / 13期
关键词：
TETRAAMMINE IMPREGNATION; PROMOTION; ELECTRODES; COMBUSTION; PT/YSZ; MEMBRANE; ZIRCONIA; SILVER; RULES; FILMS;
D O I：
10.1149/2.0741613jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Non-faradaic Electrochemical Modification of Catalytic Activity (NEMCA) of propane oxidation at Pt dispersed on yttria-stabilized zirconia (YSZ) discs by strong electrostatic adsorption (SEA) and wet impregnation (WI) in wireless configuration was studied and compared. With a stoichiometric gas mixture of propane and oxygen diluted in helium, an exceptionally large faradaic yield of 5.2 x 10(4) was achieved from a cell prepared by SEA at a reaction temperature of 200 degrees C and a cell voltage of 6 V, compared to a smaller value of 1.0 x 10(4) obtained from a cell prepared by WI. A conceptual mechanism explaining the dependence of the faradaic yields and the rate enhancement ratios on Pt particle sizes is proposed. (C) 2016 The Electrochemical Society. All rights reserved.
引用
收藏
页码：E341 / E343
页数：3
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