DICP OpenIR
Ethanol electrooxidation on novel carbon supported Pt/SnOx/C catalysts with varied Pt : Sn ratio
Jiang, L.; Colmenares, L.; Jusys, Z.; Sun, G. Q.; Behm, R. J.
关键词Ethanol Oxidation Activity Selectivity Supported Catalyst Pt/sno2
刊名ELECTROCHIMICA ACTA
2007-12-01
DOI10.1016/j.electacta.2007.01.047
53期:2页:377-389
收录类别SCI ; ISTP
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Electrochemistry
研究领域[WOS]Electrochemistry
关键词[WOS]ELECTROCHEMICAL MASS-SPECTROMETRY ; FUEL-CELL CATALYST ; ANODE CATALYSTS ; PRODUCT YIELDS ; PART I ; OXIDATION ; ELECTROCATALYSTS ; METHANOL ; ELECTRODE ; ACID
英文摘要Novel carbon supported Pt/SnOx/C catalysts with Pt:Sn atomic ratios of 5:5, 6:4, 7:3 and 8:2 were prepared by a modified polyol method and characterized with respect to their structural properties (X-ray diffraction (XRD) and transmission electron microscopy (TEM)), chemical composition (XPS), their electrochemical properties (base voltammetry, COad stripping) and their electrocatalytic activity and selectivity for ethanol oxidation (ethanol oxidation reaction (EOR)). The data show that the Pt/SnOx/C catalysts are composed of Pt and tin oxide Danoparticles with an average Pt particle diameter of about 2 nm. The steady-state activity of the Pt/SnOx/C catalysts towards the EOR decreases with tin content at room temperature, but increases at 80 degrees C. On all Pt/SnOx/C catalysts, acetic acid and acetaldehyde represent dominant products, CO2 formation contributes 1-3% for both potentiostatic and potentiodynamic reaction conditions. With in creasing potential, the acetaldehyde yield decreases and the acetic acid yield increases. The apparent activation energies of the EOR increase with tin content (19-29 kJ mol(-1)), but are lower than on Pt/C (32 kJ mol(-1)). The somewhat better performance of the Pt/SnOx/C catalysts compared to alloyed PtSnx/C catalysts is attributed to the presence of both sufficiently large Pt ensembles for ethanol dehydrogenation and C-C bond splitting and of tin oxide for OH generation. Fuel cell measurements performed for comparison largely confirm the results obtained in model studies. (c) 2007 Elsevier Ltd. All rights reserved.
语种英语
WOS记录号WOS:000251480900018
引用统计
被引频次:148[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140488
专题中国科学院大连化学物理研究所
作者单位1.Univ Ulm, Inst Catalysis & Surface Chem, D-89069 Ulm, Germany
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式
GB/T 7714
Jiang, L.,Colmenares, L.,Jusys, Z.,et al. Ethanol electrooxidation on novel carbon supported Pt/SnOx/C catalysts with varied Pt : Sn ratio[J]. ELECTROCHIMICA ACTA,2007,53(2):377-389.
APA Jiang, L.,Colmenares, L.,Jusys, Z.,Sun, G. Q.,&Behm, R. J..(2007).Ethanol electrooxidation on novel carbon supported Pt/SnOx/C catalysts with varied Pt : Sn ratio.ELECTROCHIMICA ACTA,53(2),377-389.
MLA Jiang, L.,et al."Ethanol electrooxidation on novel carbon supported Pt/SnOx/C catalysts with varied Pt : Sn ratio".ELECTROCHIMICA ACTA 53.2(2007):377-389.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Jiang, L.]的文章
[Colmenares, L.]的文章
[Jusys, Z.]的文章
百度学术
百度学术中相似的文章
[Jiang, L.]的文章
[Colmenares, L.]的文章
[Jusys, Z.]的文章
必应学术
必应学术中相似的文章
[Jiang, L.]的文章
[Colmenares, L.]的文章
[Jusys, Z.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。