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简介：Inthepresentstudy,aseriesofregenerationconditionsandtheregenerationmechanismofmodifiedlakesedimentbiochar(Fe-KOH/LSB)catalystsforlow-temperaturecatalytichydrolysisofcarbondisulfide(CS2)wereinvestigated.TheresultsshowedthatRm-WNAmethodhadthebestregenerationeffect.Underoptimalregenerationconditions,thesulfurcapacity(13.86mg[s]/g[catalyst])ofregeneratedFe-KOH/LSBwasclosetothatoffreshFe-KOH/LSB(14.88mg[s]/g[cataiyst]).Thewaterwashingprocesscouldwashawayasmallnumberofsulfatesandalargenumberofalkalinegroups.TG-DTAandDRTFIRresultsindicatedthatthenitrogensweepingprocesscoulddecomposeFe2(SO4)3intoFe2O3,whichpartiallyrecoveredthecatalyticandtheadsorptiveabilities.CO2-TPDresultsindicatedthatthealkalisteepingprocessoffer-OHgroups,furtherimprovingthecatalyticandtheadsorptiveabilities.After3times-regeneration,thesulfurcapacityofFe-KOH/LSBreached13.31mg[s]/g[cataiyst],indicatingthattheRm-WNAmethodhadgoodstabilityfortherecoveryofthecatalyticactivity.BET,XPSandXRDresultsrevealedthatthedecreaseofthesulfurcapacityforregenerationwasattributedtothedecreaseoftheadsorptiveabilitiesofCandSiO2.

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简介：单人赛水晶的ZnOnanorods被一个simplesolvothermal过程在低温度综合了。传播电子显微镜学(TEM)观察证实了同样综合的产品有像杆的形态学，直径从100nm从几纳米到30nm和长度到六角形的ZnOnanorods是的2亩m.Such在结构上制服和生长方向被识别是[0001]ZnOnanorods的.Growth机制被建议。

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简介：Lowtemperaturecompositechromizingisaprocesscomposedofaplainion-carbonitridingorion-nitridingat550～580℃,followedbyalow-temperaturechromizinginasalt-bathof590℃.ThemicrostructureandpropertiesofthelowtemperaturecompositechromizedlayeronH13toolsteelwereinvestigatedusingmetallography,X-raydiffraction,microanalysis,hardnessandweartests.Itwasfoundthatthislowtemperatureprocesswasthermodynamicallyandkineticallypossible,andthecompositechromizedlayeronH13steel,withathicknessof3～6μm,consistedofthreesub-layers(bands),viz.theouterCr-richone,theintermediate(black)one,andtheinner,originalwhitelayer.Afterchromizing,theformerdiffusionlayerwasthickened.TheresultsofX-raydiffractionshowedthatthecompositechromizedlayercontainedsuchnitridesandcarbidesofchromiumasCrN,Cr2N,(Cr,Fe)23C6,and(Cr,Fe)7C3,aswellasplainα-(Fe,Cr).Ahighsurfacemicrohardnessof1450～1550HV0.025,whichismuchhigherthanthatobtainedbytheconventionalioncarbonitridingandionnitriding,wasobtained.Inaddition,anexcellentwearresistancewasgainedonthecompositechromizedlayer.

简介：力量的发展和用在在低温度的硫酸盐环境下面的低水文件夹比率的石灰石粉末做的基于水泥的材料的攻击的形式被学习。结果显示当水文件夹比率比0.40低时，有石灰石粉末的基于水泥的材料在为120d在低温度在10%镁硫酸盐答案被浸泡，并且在在200d岁时被浸泡以后在外观有重要变化以后在外观有不足道的变化。扩大损坏和脱落在不同层次发生在具体测试立方体的表面上。当石灰石粉末占大约28%似水泥的材料时，与水文件夹比率的减少，在材料在200d岁时在低温度在镁硫酸盐答案被浸泡以后，压缩力量损失逐渐地减少了。在有不到0.4的水文件夹比率和石灰石粉末卷的标本以后大与20%在200d岁时在低温度在10%镁硫酸盐答案被浸泡比，带攻击的破坏被引起到具体测试立方体的石膏，没有thaumasite硫酸盐攻击。

简介：Single-crystalalphaalumina(α-Al2O3)plateletsweresynthesizedbycalciningapowdermixtureofbayerite(α-Al(OH)3)andpotassiumsulfate(K2SO4)at900℃.ThecrystallinephaseevolutionsandmorphologiesofthesampleswerecharacterizedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),andtransmissionelectronmicroscopy(TEM).Thesynthesizedsamplesmainlyconsistedofsingle-crystalα-Al2O3plateletswithadiameterof0.5-1.5μmandathicknessof50-150nm.Moreover,with3,5,and8wt%(referredtotheobtainedalumina)α-Al2O3seedsaddingintothepowdermixtureofbayeriteandpotassiumsulfate,theaveragediameterofα-Al2O3plateletscanbereducedto450,240,and220nm,respectively.Itisfoundthatthesequenceofthephasetransformationisthebayerite(α-Al(OH)3)→boehmite(γ-AlOOH)→γ-Al2O3→α-Al2O3.FurtheranalysisindicatedthatK2SO4canpromotethephasetransformationfromγ-Al2O3toα-Al2O3andtheformationofsingle-crystalα-Al2O3plateletsmightbeattributedtotheliquidphaseK3Al(SO4)3.

简介：一条途径把毛孔结构称为折叠复制线路被开发了与一个高表面区域(105m2/g)准备mesoporousWC材料并且在象700一样低的温度使框架结晶??????????H

简介：Theviscosityoffivebitumenswasmeasuredatdifferenttemperaturesandtheviscosity-temperaturerelationshipwasdevelopedtoevaluatethetemperaturesusceptibilityofdifferentbitumens.Thegenericfractions(ie,saturates,aromatics,resinsandasphaltenes)ofthebitumenswereseparatedandtestedbythin-layerchromatographywithflameionizationdetection(TLC-FID)andtheeffectofchemicalcompositionsontemperaturesusceptibilityofbitumenswasanalyzedusingthelinearregressionmethod.Theexperimentalresultsshowthatthefourgenericfractionsplayaninconsistentroleinthetemperaturesusceptibilityofbitumensandthecorrelationdegreeofeachfractionissomewhatdifferent.Theexistenceofaromaticsandasphaltenescanlowerthesensitivitytotemperaturechangeswhereassaturatesandresinsmayhaveanadverseimpactonthetemperaturesusceptibilityofbitumens.Asforthecorrelationdegrees,resinsshowtheclosestcorrelationwiththetemperaturesusceptibilityofbitumens,thenasphaltenesandaromatics,andthecorrelationbetweentemperaturesusceptibilityandsaturatesisrelativelyweak.

简介：医药石头manifanshi被使用极化光显微镜学研究，X---光线衍射(XRD)，和感应耦合等离子体原子发射光谱法(ICP-AES)方法。未加工的Manifanshi的XRD模式显示它主导地由斜长石组成，正长石，石英，和在1000deg6号元素碳的化学符号的锻烧的Manifanshi的证明在斜长石和正长石的晶体结构的失真在锻烧的温度发生。极化光显微镜学观察建议Manifanshi是自然地捱过的monzo花岗石斑岩。化学分析表明因此，Manifanshi包含很多个有益健康的痕量元素和稀罕有毒的痕量元素它是高质量的Manifanshi。痕量元素的溶解度被从在由ICP方法改变温度情况下面锻烧的Manifanshi测量痕量元素的集中决定，结果建议在1000deg6号元素碳的化学符号的锻烧的产品在水里在离子的集中和痕量元素的溶解率显示出理想的结果，它被贡献在锻烧的温度的长石的晶体结构的失真。

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简介：为尺寸依赖者的一个模型极其细小的粒子的起始的sintering温度被建立。为W，Ni和Ag的尺寸依赖者sintering温度的理论预言极其细小的粒子与可得到的试验性的证据一致。(编辑作者摘要)18个裁判员。

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简介：这些电影的容易的磁化轴与底层平行，这被发现，并且同样劈啪作响、退火的multilayers的磁性在电影飞机是各向同性的。强制的地H//c是4.8kA/m，remanence-to-saturation磁化M//r/M//s的比率是大约0.73为作为--劈啪作响的样品。H//c和M//r/M//s增加温度，增加退火，特别当退火的温度比400度C高时。这些试验性的结果能被使用联合的铁磁性的交换和coercivity的卡住的理论解释。(编辑作者摘要)13个裁判员。

简介：TheBaCe0.9Y0.1O3-δ(BCY)perovskitemembranewassuccessfullysynthesizedbyliquidcitratemethod.ThephasestructureofthepowderwascharacterizedbyX-raydiffraction(XRD).Scanningelectronmicroscopy(SEM)wasusedtocharacterizemicrostructuresofthemembranesinteredundervariousconditions.Sinteringtemperaturesanddwelltimeduringsinteringinfluencethefinalmicrostructureoftheceramic.Resultsshowedthatincreasingsinteringtemperatureresultedinadensemembranewithcleargrains.Anincreaseofdwelltimewasfavorabletoproducemembraneswithlargergrainsinthesinteredceramics.Adensityof5.87g/cm3wasreachedforthemembraneaftersinteringat1200℃withdwelltimeof10h.Thisresultedintheformationofdensemembraneswithclearstructureandaveragegrainsizeof0.27mm.TheinfluenceofmicrostructureonthehydrogenpermeationfluxthroughBCYwasobservedbymeasuringthehydrogenpermeationflux,andtheresultsshowedthathydrogenpermeationfluxincreaseswithincreasingtheaveragegrainsizeofthemembrane.FromH2permeationrates,itwasfoundthatbulkdiffusionratherthansurfacereactionplayedthedominantroleinH2transport.