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题名: Preparation and characterization of Pd/C catalyst obtained in NH3-mediated polyol process
作者: Li, Huanqiao;  Sun, Gongquan;  Jiang, Qian;  Zhu, Mingyuan;  Sun, Shiguo;  Xin, Qin
通讯作者: 孙公权
关键词: palladium nanoparticles ;  NH3-mediated polyol process ;  without any protective agent ;  reduction reaction mechanism ;  inactivity to methanol oxidation
刊名: JOURNAL OF POWER SOURCES
发表日期: 2007-10-25
DOI: 10.1016/j.jpowsour.2007.05.024
卷: 172, 期:2, 页:641-649
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 305
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: Vulcan XC-72Rcarbon supported Pd nanoparticles was obtained in a NH3-mediated polyol process without any protective agent and characterized by X-ray diffraction (XRD) and transmission electron microscope (TEM) techniques. The added NH3 species is found to have a strong complex ability to Pd, which not only avoids the formation of Pd hydroxide precipitate resulted from Pd hydrolysis, but also restrains the further complete reduction of Pd. Temperature-programmed reduction equipped with a mass spectrometry (TPR-MS) is employed to study the reductive behavior of unreduced Pd complex in Pd/C catalyst and the results show that the post-treatment in a reductive atmosphere at higher temperature is needed to ensure the complete reduction of Pd. XRD patterns show the heat-treated Pd/C sample in a reductive atmosphere has a face centered cubic crystal structure and TEM image indicates that the dispersion of Pd nanoparticles on the carbon support is uniform and in a narrow particle size range. Thermodynamic data analysis is carried out to elucidate the possible reaction pathway for the preparation of Pd/C catalyst in this process. The obtained Pd/C catalyst shows high activity to formic acid oxidation and high selectivity to oxygen reduction reaction (ORR) with the presence of methanol. (c) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: OXYGEN REDUCTION REACTION ;  FORMIC-ACID ;  PALLADIUM NANOPARTICLES ;  SIZE CONTROL ;  FUEL-CELLS ;  PLATINUM ;  OXIDATION ;  CARBON ;  ELECTROCATALYST ;  ALLOYS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000250654700017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99283
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Li, Huanqiao,Sun, Gongquan,Jiang, Qian,et al. Preparation and characterization of Pd/C catalyst obtained in NH3-mediated polyol process[J]. JOURNAL OF POWER SOURCES,2007,172(2):641-649.
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