简介：ThemonolayerdispersionofcopperoxideonthesurfaceofanataseanditseffectonthepropertieshavebeenstudiedbyX-rayphotoelectronspectroscopy(XPS)andX-rayextendedabsorptionfinestructure(EXAFS).XPSresultsgiveanutmostdispersioncapacityof7.2mg/gTiO2.StronginteractionsbetweencopperoxideandanatasecanbeseenfromEXAFSresults.ThestructureofthesupportedCuOspeciesisstronglydependentontheamountofCuOloading.WhenthecontentofCuOloadingisbelowtheutmostdispersioncapacity,thesurfaceofCuO/TiO2isdominatedbythehighlydispersedCuOspecieshavingno-Cu-O-Cu-chains,Thecopperionislocatedinanoctahedralcoordinationenvironment,andtheCu－O-coordinationdistanceismuchlongerthanthatinpurecrystallineCuO,whenCuOloadingisexceedstheutmostdispersioncapacity,crystallineCuOisformedonthesurfaceofCuO/TiO2,Fromtheresultofthesturcturestudy,itisCu-OoctahedralCoordinationandcoordinationdistancechangeincomparationwithpurecrystallineCuoonthesurfaceCuO/TiO2thathavecatalyticactivity.

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简介：我们报导紫外(紫外)分层的器官无机的perovskite材料的轻导致的对光反应变色行为(C4H9NH3)2CuCl4,与紫外光在照耀以后从黄改变了到褐(10mW/cm2)并且部分在黑暗中通过存储恢复了。(C4H9NH3)2展出的CuCl4在286nm集中的二个不同吸收乐队(乐队我)并且384nm(乐队II)它被归因于导致相片的激子在无机的层由器官的层夹了的2D形成了。乐队的蓝移动我当样品为时间的不同长度在紫外光下面被照耀时，从象乐队的紧张的减少一样的287～269nm，我和乐队II能被发现。在弄歪的CuCl64−八面体的N-H⋯Cl氢契约以及长Cu-Cl契约的颤动的紧张的同时的变弱能从Fourier变换被检测红外线(FTIR)系列，它结果不对称的Cl-Cu⋯Cl契约和产生对光反应变色行为的起诉分发的变化。

简介：Thispapercarriesoutthedensityfunctionaltheorycalculationstostudytheadsorbate-substrateinteractionbetweentetraceneandCusubstrates(Cu(110)andCu(100)surface).Oneachofthesurfaces,twokindsofgeometryarecalculated,namely'flat-lying'modeand'uprightstanding'mode.For'flat-lying'geometry,themoleculeisfoundtobealignedwithitslongermolecularaxisalongclose-packeddirectionofthesubstratesurfaces.For'uprightstanding'geometry,thelongaxisoftetraceneisfoundtobeparalleltothesurfacenormalofthesubstrateonCu(110)surface.However,tetraceneappearsas'tilted'modeonCu(100)surface.Structureswith'flat-lying'modehavemuchlargeradsorptionenergyandchargetransferuponadsorptionthanthatwith'uprightstanding'mode,indicatingthepreferenceof'flat-lying'geometryonbothCu(110)andCu(100)surface.

简介：Inthispaper,anovelcopper-basedcatalystforFCCgasolineimprovingtheabilityofremovalthesulfurandavoidingthelossoftheoctanenumberfromolefinsaturationbyreactiveadsorptiondesulfurization(RADS)wasinvestigated.TheseriesofCu/ZnO-Al2O3catalystswerecharacterizedbyX-raypowderdiffraction(XRD),N2adsorptionanalysisandtemperature-programmedreduction(TPR)studies,X-rayphotoelectronspectroscopy(XPS),scanningelectronmicroscope(SEM)andtransmissionelectronmicroscopy(TEM).Theexperimentresultsshowedthatthecatalystshadanoptimumdesulfurizationabilitywithcopperloading6wt%,whichthesulfurcontentsofproductdecreasedlessthan10μg/gandolefincontentsdecreasedfrom16.19%to14.14%forthelongperiodoperation.TheappropriateCuloadingcontentcouldleadtothehighactiveandlowapparentactivationenergy(Ea).Therefore,theCu-basedcatalystmaybecomeanovelcatalystforsecond-generationforreactiveadsorptiondesulfurization,whichachievesthehighdesulfurizationactiveandlowolefinssaturationtosatisfytheupgradingtheproduct.

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简介：OrderedmesoporouscopperincorporatedAl2O3（Cu/Al2O3）withhighCudispersionwerepreparedbyafacilesolutioncombustionsynthesismethodusingaluminumnitrateandcoppernitrateasoxidantsandureaasfuel.Itisafacileandgreenroutetosynthesizecatalystsfordimethyletherdirectlyfromsyngas.Cu/Al2O3catalystswerecharacterizedbyXRD,N2adsorption–desorption,SEM-EDS,andH2-TPR.Theresultsindicatethatthecatalystsobtainanorderedmesoporousstructureandcopperishomogenouslydispersed.ThemesoporousCu/Al2O3catalystswereutilizedasbifunctionalcatalystsinsyngastodimethyletherreaction（STD）.ThecoppercontentaffectsthecatalyticperformanceinSTDreaction.TheCOconversionandDMEselectivityofCu/Al2O3with15%coppermolarratioachieve52.9%and66.1%,respectively.Moreover,themesoporousCu/Al2O3catalystsshowexcellentstabilityinSTDreaction.

简介：Thestructureandbindingenergyofcopperclustersofthesizerange70to150werestudiedbyusingtheembeddedatommethod.Thestabilityofthestructureoftheclusterswasstudiedbycalculatingtheaveragebindingenergyperatom,firstdifferenceenergyandseconddifferenceenergyofcoppercluster.Mostofthecopperclustersofthesizen=70-150adoptanicosahedralstructure.Theresultsshowthatthetrendsareinagreementwiththeoreticpredictionforcopperclusters.Themoststablestructuresforcopperclustersarefoundatn=77,90,95,131,139.

简介：Copper（Ⅱ）oxideinvaryingratioswascombinedwitheitheranalumina-basedcement（Al300）,orCaOderivedfromlimestoneassupportmaterialinamechanicalpelletiser.Thisproductionmethodwasusedtoinvestigateitsinfluenceonpossiblemechanicalandchemicalimprovementsforoxygencarriersinchemicalloopingprocesses.Thesematerialsweretestedinalab-scalefluidisedbedwithCOorCH4asareducinggasat950°C.Asexpected,theoxygencarrierscontainingagreaterratioofsupportmaterialexhibitedanenhancedcrushingstrength.Oxygencarrierscomprisedofa1:3ratioofsupportmaterialtoactiveCuOexhibitedincreasedcrushingstrengthbyaminimumof280%comparedtopureCuOpellets.AlloxygencarriersexhibitedahighCOconversionyieldandwerefullyreduciblefromCuOtoCu.Fortheinitialredoxcycle,Al300-supportedoxygencarriersshowedthehighestfuelandoxygencarrierconversion.Thegeneraltrendobservedwasadeclineinconversionwithanincreasingnumberofredoxcycles.InthecaseofCaO-supportedoxygencarriers,allbutoneoftheoxygencarrierssufferedagglomeration.TheagglomerationwasmoresevereincarrierswithhigherratiosofCuO.OxygencarrierCu25Al75（75wt%aluminatecementand25wt%CuO）,whichdidnotsufferfromagglomeration,showedthehighestattritionwithalossofapproximately8%ofitsinitialmassover25redoxcycles.ThereducibilityoftheoxygencarrierswaslimitedwithCH4incomparisontoCO.CH4conversionwere15%-25%and50%forCu25Ca75（25wt%CuOand75wt%CaO）andCu25Al75,respectively.Cu25Ca75demonstratedimprovedconversion,whereasCu25Al75exhibitedatrendingdecreaseinconversionwithincreasingredoxcycles.

简介：当一些血成分在动脉的墙上积累时，一个真神经病的条件经验丰富得到从墙撤退了，再加入循环系统和凝结发生。在使倾向的体环的一个环形的区域的nanofluid的蠕动的流动上的铜nanoparticles和使倾向的磁场的角色被调查。当其外部试管有正弦曲线自然和内胎的一个波浪的一个体环在它的墙上有块，我们由考虑小动脉代表块模型。润滑油途径被用来简化这个问题。靠近的表格答案为温度和速度侧面被决定。在压力上升的相关参数的影响，压力坡度，速度并且优化图形地被解释。在纯血和铜血之中的比较被介绍并且分析。考虑分析的主要发现是铜nanoparticles的包括扩大速度的振幅的。因此，考虑学习在生物医学的应用起一个主导的作用。

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