简介：Inthiswork,aseriesofMIL-101-SO3H（x）polymericmaterialswerepreparedandfurtherusedforthefirsttimeasefficientheterogeneouscatalystsfortheconversionoffructose-basedcarbohydratesinto5-ethoxymethylfurfural（EMF）inarenewablemixedsolventsystemconsistingofethanolandtetrahydrofuran（THF）.Theinfluenceof–SO3HcontentontheacidityaswellasonthecatalyticactivityoftheporouscoordinationpolymersinEMFproductionwasalsostudied.HighEMFyieldsof67.7%and54.2%couldbesuccessivelyobtainedfromfructoseandinulininthepresenceofMIL-101-SO3H（100）at130°Cfor15h.Thecatalystcouldbereusedforfivetimeswithoutsignificantlossofitsactivityandtherecoveryprocesswasfacileandsimple.Thisworkprovidesanewplatformbyapplicationofporouscoordinationpolymers（PCPs）fortheproductionofthepotentialliquidfuelmoleculeEMFfrombiomassinasustainablesolventsystem.

简介：ThisworkprovidesacomprehensivetheoreticalanalysisofMHDunsteadyfreeconvectionviscoelasticfluidflowthroughaporousmedium.Themediumistreatedasincompressibleandopticallytransparent.Theflowofthefluidisinitiatedbyshearingactionofthemovingwallwithtimedependentsuction.Radiativeheatflowisconsideredintemperatureequation.Thecouplednonlinearproblemhasbeensolvedasymptotically.Approximatesolutionshavebeenobtainedforthemeanvelocity,meantemperatureusingmultiparameterperturbationtechnique.Theoriginalityofthepresentstudyistoinvestigatetheeffectofviscoelasticpropertyofthefluid(WaltersB?model)ontheflowandheattransferphenomenawhentheflowispermeatedthroughaporousmediumwithuniformporousmatrixsubjecttotransversemagneticfieldandtimedependentfluctuativesuctionattheboundarysurface.Thecaseofviscousflowhasbeendiscussedasaparticularcaseoncomparisonwiththeresultreportedearlieranditisingoodagreement.Flowreversalisindicatedincaseofviscoelasticfluidwithhighheatcapacityinthepresenceofmagneticfield.Thehighercoolingoftheplateincaseofviscoelasticflowalsocausesaflowreversal.

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简介：Thispaperdiscussesastatisticalsecond-ordertwo-scale(SSOTS)analysisandcomputationforaheatconductionproblemwitharadiationboundaryconditioninrandomporousmaterials.Firstly,themicroscopicconfigurationforthestructurewithrandomdistributionisbrieflycharacterized.Secondly,theSSOTSformulaeforcomputingtheheattransferproblemarederivedsuccessivelybymeansoftheconstructionwayforeachcell.Then,thestatisticalpredictionalgorithmbasedontheproposedtwo-scalemodelisdescribedindetail.Finally,somenumericalexperimentsareproposed,whichshowthattheSSOTSmethoddevelopedinthispaperiseffectiveforpredictingtheheattransferperformanceofporousmaterialsanddemonstratingitssignificantapplicationsinactualengineeringcomputation.

简介：Sulphonatednano-structuredmicro-porousionexchangepolymers,knownassulphonatedPolyHIPEPolymers(s-PHPs)wereusedinsyngascleaningtoinvestigatetheirimpactontarcomposition,concentrationanddewpointdepressionduringthegasificationoffuelcanebagasseasamodelbiomass.Theresultsshowedthatthes-PHPsusedasasecondarysyngastreatmentsystem,washighlyeffectiveatadsorbingandreducingtheconcentrationofallclassoftarsinsyngasby95%-80%whichresultedintardewpointdepressionfrom90℃to73℃.Itwasshownthattarsunderwentchemicalreactionswithins-PHPs,indicatingthattardiffusionfromsyngaswasdrivenbychemicalpotential.Itwasalsoobservedthats-PHPsalsocapturedashformingelementsfromsyngas.Theuseofs-PHPsingasificationaswellasinanintegratedthermochemicalbiorefinerytechnologyisdiscussedsincethetarloadeds-PHPscanbeusedasnaturalherbicidesintheformofsoiladditivestoenhancethebiomassgrowthandcropyield.

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简介：HierarchicalporousTiO2nanopillsweresynthesizedusingatitaniummetal-organicframeworkMIL-125（Ti）asprecursor.Theas-synthesizedTiO2nanopillsownedalargespecificsurfaceareaof102m2/ganduniqueporousstructure.Furthermore,theobtainedTiO2nanopillswereappliedasanodematerialsforNa-ionbatteriesforthefirsttime.Theas-synthesizedTiO2nanopillsachievedahighdischargecapacityof196.4mAh/gatacurrentdensityof0.1A/g.Adischargecapacityof115.9mAh/gwasobtainedatahighcurrentdensityof0.5A/gandthecapacityretentionwasremainedashighas90%evenafter3000cycles.Theexcellentelectrochemicalperformancecanbeattributedtoitsuniquehierarchicalporousfeature.

简介：Thispaperstudiesthethermal-diffusionanddiffusionthermo-effectsinthehydro-magneticunsteadyflowbyamixedconvectionboundarylayerpastanimpermeableverticalstretchingsheetinaporousmediuminthepresenceofchemicalreaction.Thevelocityofthestretchingsurface,thesurfacetemperature,andtheconcentrationareassumedtovarylinearlywiththedistancealongthesurface.Thegoverningpartialdifferentialequationsaretransformedintoself-similarunsteadyequationsusingsimilaritytransformationsandsolvednumericallybytheRunge-Kuttafourthorderschemeinassociationwiththeshootingmethodforthewholetransientdomainfromtheinitialstatetothefinalsteadystateflow.Numericalresultsforthevelocity,thetemperature,theconcentration,theskinfriction,andtheNusseltandSherwoodnumbersareshowngraphicallyforvariousflowparameters.Theresultsrevealthatthereisasmoothtransitionofflowfromunsteadystatetothefinalsteadystate.Aspecialcaseofourresultsisingoodagreementwithanearlierpublishedwork.

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简介：Facileproductionofhighqualityactivatedcarbonsfrombiomassmaterialshasgreatlytriggeredmuchattentionpresently.Inthispaper,aseriesofinterconnectedporouscarbonmaterialsfromlotusrootshellsbiomassarepreparedviasimplepyrolysisandfollowedbyaKOHactivationprocess.Thepreparedcarbonsexhibithighspecificsurfaceareasofupto2961m~2/gandlargeporevolume～1.47cm3/g.Inaddition,theresultantporouscarbonsservedaselectrodematerialsinsupercapacitorexhibithighspecificcapacitanceandoutstandingrecyclingstabilityandhighenergydensity.Inparticular,theirspecificcapacitanceretentionwasalmost100%after10500cyclesatacurrentdensityof2A/g.Remarkabely,theimpactofthetailoredspecificsurfaceareasofvariouscarbonsamplesontheircapacitiveperformancesissystematicallyinvestigated.Generally,itwasbelievedthatthehighly-developedporosityfeatures(includingsurfaceareasandporevolumeandporesize-distributions),togetherwiththegoodconductivityofactivatedcarbonspecies,playakeyroleineffectivelyimprovingthestorageenergyperformancesoftheporouscarbonelectrodematerialsinsupercapacitor.

简介：在这研究，新奇的分子地印的开的多孔的膜(MIOPM)为甲基4-hydroxybenzoate(M4HB)的选择吸附和分离用皮克林抱起对方的大腿把他摔倒模板方法和分子的印技术作好准备。模板M4HB，功能的单体，crosslinker和plastifier2-ethylhexylacrylate(2-EHA)在油阶段被包含。恐水病的硅石nanoparticles(HNP-SiO2)作为stabilizer被采用与nonionic表面活化剂sorbitantrioleate(跨度85)建立稳定的W/O皮克林抱起对方的大腿把他摔倒。SEM和FTIR的结果显示最佳的MIOPM成功地被准备并且拥有了开、互连的毛孔。然后，MIOPM为M4HB被用作吸着剂。关联系数(为Langmuir-Freundlich等温线模型和pseudo-second-order的R2)价值运动模型适合到吸附平衡和运动数据都分别地比0.95高。最大的吸附能力和为MIOPM4的快速的吸附的时间是4.146 ；mg ；g−1和100 ；min分别地。另外，为与在结构上相比的M4HB的MIOPM的渗透分离因素联系了模拟甲基2-hydroxybenzoate(M2HB)能到达3.122。

简介：Nanostructuredmetaloxidesderivedfrommetalorganicframeworkshavebeenshowntobepromisingmaterialsforapplicationinhighenergydensitylithiumionbatteries.Inthiswork,porousnanostructuredZnCo2O4andCo3O4weresynthesizedbyafacileandcost-effectiveapproachviathecalcinationofMOF-74precursorsandtestedasanodematerialsforlithiumionbatteries.ComparedwithCo3O4,theelectrochemicalpropertiesoftheobtainedporousnanostructuredZnCo2O4exhibithigherspecificcapacity,moreexcellentcyclingstabilityandbetterratecapability.Itdemonstratesareversiblecapacityof1243.2mAh/gafter80cyclesat100mA/gandanexcellentrateperformancewithhighaveragedischargespecificcapacitiesof1586.8,994.6,759.6and509.2mAh/gat200,400,600and800mA/g,respectively.ThesatisfactoryelectrochemicalperformancessuggestthatthisporousnanostructuredZnCo2O4ispotentiallypromisingforapplicationasanefficientanodematerialforlithiumionbatteries.

简介：氧化铝在层次地多孔的氧化锆固体酸做和硫酸化经由一个壶和bi-surfactant-assisted同时被完成了自己组装过程，把铝硫酸盐用作艾尔和SO42吗？来源。没有氧化铝没有层次地多孔的结构，做和做Al的sulfated氧化锆，准备的合成的稳固的酸与sulfated氧化锆相比为酯化作用反应显示出许多提高的酸味和再循环的催化活动。

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简介：Seaurchinspineswerechosenasamodelsystemforbiomimeticceramicsobtainedusingstarch-blendedslipcasting.Porousaluminaceramicswithcap-shapedlayerswithdifferentalternatingporositieswerefoundtohavesuperiorfracturebehaviorunderbulkcompressioncomparedtoceramicswithuniformporosity.Theyfailinacascadingmanner,absorbinghighamountsofenergyduringextendedcompressionpaths.TheporosityvariationinanotherwisesinglephasematerialmimicksthearchitecturalmicrostructuredesignofseaurchinspinesofHeterocentrotusmammillatus,whicharepromisingmodelmaterialsforimpactprotection.