微波合成PtMC催化剂及其催化性能比较.pdf
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微波合成Pt—M/C催化剂及其催化性能比较
陈 敏u,王诚:,刘志祥:,张萍一,毛宗强z
(1.中国地质大学材料科学与化学丁程学院,湖北武汉430074;2.清华大学核能与新能源技术研究院,北京100084)
试手段对催化剂的微观结构、表面形貌等物理性能进行表征.并对其电化学性能进行了比较。测试结果表明:催化剂均
高度分散在Vulcan
3.1 nm。在室温28℃下测得的电化学性能结果表明:合成催化剂在甲醇中的氧化活性高低顺序为:
的能力。
关键词:铂合金催化剂;间歇微波加热法;甲醇氧化性能
911.4
中图分类号:TM 文献标识码:A 文章编号:1002—087
X(2010)11—1142埘
and characteristicofPt.M/C microwave
Synthesiscatalytic catalystsby
neatlng
CHEN
Min”,WANGChen92,LIUZhi-xian92,ZHANGPin91,MAOZong-qian92
ofMaterialScienceand ofGcosciences,W曲锄Hubei
“.College ChemistryEngineering,ChinaUniversity 430074。China;
2.bzstitutcofNuclearand
New∞e噌yTechnology,TsinghuaUniversity,Beijing100084,chjna)
were intermiRentmicrowave-assistant
Abstract:Pt/C,Pt—M(Fe,Co。Ni)/Ccatalystspreparedby polyolprocess,
andtheirmicrostructureandsurface werecharacterizedtransmissionelectron
morphology by
resultsshowthatthe are ontheVulcanXC一72carbon
×一raydiffraction(XRD).Thecatalystshighlydispersed
the sizeof andPt-Ni are nmand3.1
support,andaverageparticlesPt。阼Fe,Pt-Co nanoparticles3.4,2.6.2.8
ofthe
nm electrocatalyticperformance wereevaluatedby
respectively.The samples cycIIc
currents—timeat2mol/L solutionsand28℃.Theresultsshowthatthecurrenland
polarization CH30H/H2S04
ofelectro-oxidationinmethanoIarePt—Fa/CPt—Co/CPt-Nl,CPt/CandPt—Ni/CPt—Co/CPt—Fe/CPt/C.
stability
andPt—M/C
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