简介：TheCOMPASSexperimentatCERNisstartingdatatakinginsummer2001,TheCOMPASSoff-lineframework(CORAL)willusetheCERNConditionsDataBase(CDB)tohandletimedependentquantitieslikecalibrationconstantsanddatafromtheslowcontrolsystem.WedescribetheuseoftheCDBwithinCORALandthefullscaleperformancetestsontheCOMPASSComputingFarm(CCF),TheCDBhasbeeninterfacedtotheSCADAPVSSslowcontrolsystem.TocontinuouslytransferallthedatatotheCDBandmakethemavailabletotheusers,Wedescribethisinterface,afeasibilitystudyperformedusingmockdataandwepredicttheexpectedperformance.

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简介：Carbon-supportedPdnanoparticleswerepreparedbymicrowaveheating-glycolreductionmethod,andcharacterizedbyawidearrayofexperimentaltechniquesincludingX-raydiffractionspectroscopy(XRD)andtransmissionelectronmicroscopy(TEM).TheelectrooxidationbehaviorsofethanolonthePd/Celectrodeinalkalinemediawereinvestigatedusingcyclicvoltammetry(CV),chronoamperometry(CA),electrochemicalimpedancespectroscopy(EIS)andsinglecellperformancemethods.Pd/Celectrodeforethanoloxidationshowedhighelectro-catalyticactivityandlongtermstability.However,itisobservedthatthecurrentdensitydecreaseswiththeincreasingofthepotentialandnegativeimpedancepresentsinthepotentialfrom-0.1to0.1V.Thedecreasingcurrentdensityandthenegativeimpedancecouldbeduetotheadsorbedintermediatesspeciesthatinhibitedthefurtheroxidationofethanol.BasedonthechemicalreactionanalysisandEISspectra,equivalentcircuitsrelatingtovariouspotentialzoneshavebeenobtained.TheseresultsrevealthedynamicadsorptionofintermediatesspeciesonPdsurfaces.Significantly,itisclarifiedthattheadsorptionbehaviorbeginsfromthemaximumcatalysisofelectro-catalysisandendsintheformationofthepalladium(II)oxidelayerontheelectrodesurface.

简介：利用日本原子力研究机构串列加速器提供的能量为85和95MeV的28Si束流,通过重离子熔合蒸发反应76Ge(28Si,3n),布居了101Pd的高自旋激发态。根据标准在束核谱学实验测量结果,拓展了基于d5/2和1/2-[550]组态的能级纲图,新发现了1/2-[550]组态的非优惠旋称分支,完整观测到了101Pd原子核中正负宇称带的带交叉现象。根据系统性分析,将101Pd中观测到的带交叉现象归咎于g9/2质子顺排。

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简介：DistributionofmetalsonPd-SnO2/D3520catalystsandstateofthecatalystswrerstudiedwithSEM,XRD.TheinteractionbetweenmetalsandsupportorbetweenPdandSnorPbwerestudiedbyIR,XPS.Inaddition,therelationshipoftheactivityforcatalytichydrogenationoftheolefinsandouterlayervalenceelectrondensityofPdwasdiscussed.Theresultsshowedthatthesecatalystshadsuitablesurfacestate,themetalswereuniformlydispersedonthesurfacelayerofthesupport.Therewerenotobviousinteractionbetweenthemetalsandthesupport.TherewasstronginteractionbetweenPdandSn(orPb)inthecatalysts.ThecatalyticactivityforhydrogenationwasrelatedtoouterlayervalenceelectrondensityofPd.

简介：DistributionofmetalsonPd-SnO2/D3520catalystsandstateofthecatalystswerestudiedwithSEM,XRD.TheinteractionbetweenmetalsandsupportorbetweenPdandSnorPbwerestudiedbyIR,XPS.Inaddition,therelationshipoftheactivityforcatalytichydrogenationoftheolefinsandouterlayervalenceelectrondensityofPdwasdiscussed.Theresultsshowedthatthesecatalystshadsuitablesurfacestate,themetalswereuniformlydispersedonthesurfacelayerofthesupport.Therewerenotobviousinteractionbetweenthemetalsandthesupport.TherewasstronginteractionbetweenPdandSn(orPb)inthecatalysts.ThecatalyticactivityforhydrogenationwasrelatedtoouterlayervalenceelectrondensityofPd.

简介：TheSolvatedMetalAtomImpregnation(SMAI)techniquewasemployedtopreparemacroporousresinimmobilizedPd-Cubimetallicclustercatalysts.TheX-raydiffraction(XRD)andtransmissionelectronmicrograph(TEM)showedthatPd-CualloywasformedandtheparticlesizesofPd-Cuclusterswereverysmall,withaveragediameters<3nm.X-rayphotoelectronspectroscopyindicatedthatbothPdandCuwereinzero-valentstate.ThecatalyticactivitiesofthemacroporousresinimmobilizedPd-Cucatalystsinhydrogenationof4-methyl-3-penten-2-oneweremuchgreaterthanthatofthecarbonsupportedPd-Cucatalysts.

简介：在这篇文章，我们设计了并且综合一系列5-(2,6-dimethyl-4H-pyran-4-ylidene)-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H，5H)联合起来的-dione(PD)第一次基于聚合物(PFTDT，CZTDT，PHTDT和THTDT)。在这些聚合物，fluorene，2,7-carbazole，phenothiazine和thiophene作为撤退电子的组作为捐赠电子的组和PD被采用。TGA大小证明这些聚合物拥有好热稳定性(都超过377吗？？

简介：我们在场散布效果的杂质的系统的研究在超导体SrPt3P。用一固态反应方法，我们制作了做Pd的超导体Sr(磅1xPdx)3P.We发现剩余抵抗力0快速增加，Pd做，而剩余抵抗比率(RRR)显示戏剧的减小。另外，霍尔抵抗力xy的非线性的地依赖者行为和在低温度的霍尔系数RH的强壮的温度依赖被做的Pd压制。所有试验性的结果能被由做导致的杂质散布的增加解释。我们的结果建议磅位置对在现在的系统的搬运人传导很关键。

简介：由于他们的结构上的二金属的nanoparticles(NP)的化学、物理的性质的依赖，他们的结构的特征的基本理解为他们的综合体和宽应用是关键的。在这篇文章，Au-Pd二金属的NP的系统的原子水平的调查被在不同Au/Pd比率和不同尺寸与量修正Sutton陈潜力(Q-SC)使用改进粒子群优化(IPSO)进行。在IPSO，模仿的退火被介绍进古典粒子群优化(PSO)改进有效性和可靠性。另外，结构的稳定性和结构的特征上的起始的结构，粒子尺寸和作文的影响也被学习。模拟结果表明起始的结构在稳定的结构上有小效果，但是极大地影响收敛的率，并且起始的结构清楚地是的混合的集中率快核心壳和阶段比那些组织。我们发现Au-PdNP比较喜欢结构与在外部层Au富有当时在内部的Pd富有。特别，当Au/Pd比率是6:4时，nanoparticle(NP)的结构介绍标准化Pd核心Au壳结构。

简介：1-(2-chlorophenyl)ethanol(CPE)isofhealthandenvironmentalconcernduetoitstoxicityanditsuseasaninter-mediateinpharmaceuticalmanufacturing.ThecurrentworkdealswiththecatalyticreductivedechlorinationanddetoxificationofCPEbyPd/Febimetal.CPEwaseffectivelydechlorinatedto1-phenylethanol(PE)accompaniedbytheequivalentreleaseofchloride.TheextentofCPEdechlorinationincreasedwithtemperature,FedosageandPdloading.AdecreaseinsolutionpHincreasedCPEdechlorination,resultingpresumablyfromanincreaseinhydrogenproduction.Underthespecificconditionsof20g/LPd/Fe,0.10%Pd(w/w)andinitialpH5-6,theCPEdechlorinationwascompletedwithin145min.Thedechlorinationfol-lowedapseudo-first-orderkineticswithanactivationenergyof56.7kJ/mol.TheresultsoftoxicitytestingshowedthatCPEwasverytoxictoChlorella,whereasPEshowedlittletoxicity.Thetoxicityofthereactionsolutiondeclinedgraduallyandthepro-motingeffectsonChlorellaintensifiedconsequentlywiththedechlorinationprocess.Thus,thereductivedechlorinationofCPEtoPEbyPd/Fewasadetoxificationprocess.ItmaybeusedtoeffectivelyreducethetoxicologicaleffectsofCPE-contaminatedwastewater,therebyenhancingtheperformanceofsubsequentbiologicalprocessesinwastewatertreatment.

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简介：ThisPaperreportsenrichmentandsepqrationoftracePd(Ⅱ）withsilicagelbondedby(benzolyazo-arsenazoI)-aminopropyl(BAAI·SG).BAAI·SGisstableinsolutionbetween6mol/LHClandpH9.0.ThemaximumadsorptivecapacitiesofBAAI·SGandSGare52.7,23.5μmol/grespectively.AfterpreconcentrationthroughBAII·SGcolumn,Pd(Ⅱ）ofppblevelinartificialwatersamplescanbemeasuredbyspectrophotometry.

简介：Twofamiliesofcatalysts,basedonPdnanoparticlessupportedonceramicasymmetrictubularaluminamembranes,arestudiesinthedirectsynthesisofH_2O_2.TheyarepreparedbydepositingPdintwoways:(i)reductionwithN_2H_4inanultrasonicbathand(ii)byimpregnation-deposition.Thefirstpreparationleadstolargerparticles,withaveragesizeofaround11nm,whilethesecondpreparationleadstosmallerparticles,withaveragesizearound4nm.Thecatalyticmembranesweretestedasprepared,afterthermaltreatmentinairandafterfurtherpre-reductionwithH_2inmild(100℃)conditions.SampleswerecharacterizedbyTEM,CO-chemisorptionmonitoredbyDRIFTSmethodandTPR,whilecatalytictestshavebeenperformedinasemi-batchrecirculationmembranereactor.Experimentalcatalyticresultswereanalysedusingtwokineticsmodelstoderivethereactionconstantsfortheparallelandconsecutivereactionsofthekineticnetwork.SmallerparticlesofPdshowlowerselectivityduetothehigherrateofparallelcombustion,evenifthebetterdispersionofPdandthushighermetalsurfaceareainthesampleleadtoaproductivityinH_2O_2similarorevenhigherthanthesamplewiththelargerPdparticles.IndependentlyonthepresenceofsmallerorlargerPdnanoparticles,anoxidationtreatmentleadstoasignificantenhancementintheproductivity,althoughthecatalystprogressivelyreducesduringthecatalyticprocess.Theinhibitionoftheparallelcombustionreaction(towater)inducedfromthecalcinationtreatmentremainsafterthein-situreductionoftheoxidizedPdspeciesformedduringthepre-treatment.Thisislikelyduetotheeliminationofdefectsiteswhichdissociativelyactivateoxygen,andtentativelyattributedtoPdsitesabletogivethree-andfour-foldcoordinationofCO.

简介：Theremediationofgroundwaterwhichcontainschlorinatedorganiccompounds(COCs)bynanoscalebimetalliccatalystshasreceivedincreasinginterestinrecentyears.Thisreportpresentsthedechlorinationof2,4-dichlorophenol(2,4-DCP)byPd-Febimetallicnanoparticlesinthepresenceofhumicacid(HA)toinvestigatethefeasibilityofusingPd-Fefortheinsituremediationofcontaminatedgroundwater.OurexperimentalresultsindicatedthatHAhadanadverseeffectonthedechlorinationof2,4-DCPbyPd-Fenanoparticles.Therateconstantkvaluesof2,4-DCPdechlorinationwere0.017,0.013,0.009,0.006and0.004min?1forHAconcentrationsof0,5,10,15and20mg/L,respectively.TherelationshipbetweenHAdosageandkvaluescanbedescribedasalinearmodel.

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简介：Trimetallicpalladium-copper-cobaltnanoparticlessupportedonreducedgrapheneoxide(PdCuCo/RGO)withdifferentmolarratiosofPd,CuandCocanbesynthesizedbyfacilechemicalreductionwithNaBH4asreductantandcetrimoniumbromideasstabilizer.Themorphology,structureandcompositionoftheas-synthesizedcatalystsarecharacterizedbytransmissionelectronmicroscopy,X-raydiffractionandXrayphotoelectronspectroscopy.Thecyclicvoltammetryandchronoamperometryareutilizedtoinvestigatetheelectrochemicalactivitiesandstabilitiesoftheas-obtainedcatalysts.TheresultsdemonstratethatthePdCuCo/RGOcatalystshowssuperiorcatalyticactivityandstabilityformethanolelectrooxidationinalkalinemediacomparedwithPdCu/RGO,PdCo/RGO,andPd/RGOcatalysts.ThesefindingssuggestthatthePdCuCo/RGOcatalystpossessesagreatpotentialasapromisinganodecatalystfordirectmethanolfuelcells.