Promotion of PtRu/C anode catalysts for ethanol oxidation reaction by addition of Sn modifier

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Title:	Promotion of PtRu/C anode catalysts for ethanol oxidation reaction by addition of Sn modifier
Authors:	Chang,YW;Liu,CW;Wei,YC;Wang,KW
Contributors:	化學工程與材料工程學系
Keywords:	ALCOHOL-REDUCTION PROCESS;PLATINUM-RUTHENIUM CATALYST;FUEL-CELLS;PTSN/CEO2-C ELECTROCATALYST;FORMIC-ACID;ELECTROOXIDATION;METHANOL
Date:	2009
Issue Date:	2010-06-29 17:27:45 (UTC+8)
Publisher:	中央大學
Abstract:	PtRu/C anode electrocatalysts modified by Sn were prepared for ethanol oxidation reaction (EOR). Their phase structures, surface species, surface compositions, and EOR activities were characterized by XRD, XPS, temperature-programmed reduction (TPR), and CV, respectively. It has been found that in the PtRu/SnxC and PtSn/C alloy catalysts, some Sn alloyed with Pt to form Pt-Sn phase existed as the metallic state, however, the excess Sn existed as the amorphous SnO or crystalline SnO2. Surface analyses and electrochemical measurements suggest that the surface Ru and amorphous SnO instead of the crystalline SnO2 are important species for the promotion of EOR. As a result, compared with PtSn/C, the I-06 was enhanced about 200% for the PtRu/C electrocatalyst with 10 wt% of Sn modification. (C) 2009 Elsevier B.V. All rights reserved.
Relation:	ELECTROCHEMISTRY COMMUNICATIONS
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] journal & Dissertation

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