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微波合成PtMC催化剂及其催化性能比较.pdf

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翌遂筮至囫E■删 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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