简介:对于有机卤代物的电化学还原,银基纳米催化剂显示出优异的催化活性。采用简单的化学还原法制备Ag-Ni纳米颗粒(NPs),并采用X射线衍射、紫外-可见光谱、透射电镜以及能量散射谱等方法对制备的纳米催化剂进行表征。采用循环伏安法、计时电流法以及电化学阻抗谱在有机介质中研究Ag-Ni纳米颗粒对苄氯还原的电催化活性。结果表明:Ni元素的加入可明显减小Ag-Ni纳米颗粒的尺寸,使苄氯的还原峰电位φp正移且增加Ag-Ni纳米颗粒的催化活性。然而,当Ni的含量大于一定值后,Ag-Ni纳米颗粒的催化活性反而降低。同时,对Ag-Ni纳米颗粒的协同催化效应进行探讨。
简介:Anewrapidprototypingsystemandresearchonitstechnicalparameter,AStressBasedWrinklingCriterion,Aboutlinearandquadratic'Solid-Shelrelementsatlargedeformations,Anorthotropicspecificdamagemodelwithinclusionconsideration,ANCORBOND:Aparadigmshift,Anisotropicbehaviorofaluminiumalloyssheets.
简介:AWaveguideSwitchDesignUsingElectromagneticBandgapSubstrates;Abradingofbabbittmetalmouldwithhighefficiency;ChillcastingoflocomotivedieselIODIO0cylinderliners;Complexevaluationofmaterialsformetalmolds;CurvedSiliconElectronics;Developmentofcurvedholemachiningwithelectrochemicalmachining(lstreport)-processingmethodbyactuator-lesstool;DevelopmentofCurvedHoleProcessingTechniqueUsingElectrochemicalMachining(2ndReport)-Controllabilityofcurvatureofmachinedcurvedhole-
简介:Improvingthequalityofringcastingsfromnitrogen-containingcorrosion-resistantsteels;Influenceofabrasiveflowmachiningonreducingfuelconsumption,loweringemissionsandincreasingpower;ProductionofShipPropellerSteelBladesinSandMoldswithElectroslagReplenishment;Prototypingprocessproducessandmolds,coresforcastingsproduction。
简介:Continuousshear-amethodforstudyingmaterialelementspassingastationaryshearplane;DesignofHardWaterStableEmulsifierSystemsforPctroleum-andBio-basedSemi-syntheticMetalworkingFluids;Dielifepredictioninrapidprototypedies;Evolutionofdiesurfacesduringrepeatedstretch-bendsheetsteeldeformation;F.E.M.characterizationofdamagclawparametersbyinversetechnique;
简介:Aninfraredmicroprocessorpyrometerwithdiaphragmaticoptics,DevelopmentofMeltingTechnologyforVolumeReductionofRadioactiveScrapMetals,Higherefficiencyindustrialfurnaces,Theelectrodemetalmeltingaadtransferatthecoatedelectrodesarcwelding(review),Theelectrodemetalmeltingandtransferatthecoatedelectrodesarcwelding(review).