简介：ThecrystalgrowthprocessofZn(Leu)SO4·0.5H2OformwaterandacetonewasinvestigatedusingaCalvetmicrocalorimeter.Theheatandtherateofheatproductionduringthecrystalgrowthprocessat293.15K,295.15K,298.15Kand300.15Kweremensured.Onthebasisofexperimentalandcalculatedresults,therateconstantandthekineticparameters(theactivationenergies,thepre-exponential)duringthecrystalgrowthprocesswereobtained.Theresultsshowthatthecrystalgrowthprocesswereobtainged.TheresultsshowthatthecrystalgrowthprocessaccordedwiththeBurton-Cabrera-Franddislocationtheory.
简介：Inthispaperwereportachemicaloscillationcatalyzedby[Ni(Me2[14]1,3-dieneN4)]2+(Me2[14]l,3-dieneN4denotes2,3-dimethyl-l,4,8,ll-tetraazacyclotetradeca-1,3-diene)inBrO3--pyruvicacid-H2SO4system.Thedomainoftheexistenceoftheoscillationwasobtained.Theeffectsofinitialconcentrationofthecomponentsontheoscillationwerestudied.Thefeaturesoftheoscillationsweredescribedindetail.WealsoexaminedtheeffectsofAg+,Hg2+,CCl4,freeradicalinhibitors,etc.ontheosillations.
简介：Thecombinationofboth4,4′-bipyridine(4,4′-bipy)anddihydrogenphosphateanionligandswithcopper(Ⅱ)resultsintheformationofanovellayeredcompoundCu(4,4′-bipy)2(H2PO4)2(H2O)2.ThecrystalstructurecomprisesdiscreteneutralCu(4,4′-bipy)2(H2PO4)2(H2O)2units.Thecopperatom,locatedonthecrystallographictwofoldaxis,iscoordinatedwithtwonitrogenatomsofterminal4,4′-bipyligandsandtwowatermoleculesattheequatorialpositions,andtwodihydrogenphosphateoxygenatomsattheaxialpositions,forminganelongatedoctahedron.Thecomplexisatwo-dimensionaldistortedrhomboidalnetworkpossessingtwokindsofrhomboidswithdimensionsofca.1.6792nm×0.3203nmand1.2778nm×0.3198nm,respectively.Thetwo-dimensionalnetworksarestackedparallellyoneachotheralongc-axistogiveanextendedthree-dimensionalchannelnetworkwithaninterlayerdistanceofca.0.5030nm.Crystaldata:triclinic,spacegroupP-1,a=1.0253(2)nm,b=1.4501(3)nm,c=0.79715(16)nm,α=97.91(3)°,β=90.99(3)°,γ=85.54(3)°,V=1.1703(4)nm3,Z=2,R=0.0892,wR=0.2451.
简介：TheinfluenceofNa2SO4ontheformationofZnOwhiskerswasinvestigatedinthispaper.ZnOwhiskerswithaspectratiosofupto50weresynthesizedbydissolvingε-Zn（OH）2precursorinNaOH/Na2SO4solutionatroomtemperature,followedbyagingoftheresultingsolutionat140℃for6h.Fouriertransforminfraredspectroscopy,Ramanspectroscopy,andX-rayphotoelectronspectroscopyanalysesrevealedthatSO42-ionswereprimarilyadsorbedonthe（100）planeoftheZnOwhiskersviaanouter-spherecomplexconfiguration（O-H…O）,therebypromotingtheone-dimensionalgrowthofZnOwhiskersalongthec-axis.
简介：Weperformfirst-principlecalculationsforthestudyoftheorthorhombicRb2Cd2(SO4)3structure.Electronicenergybands,totalandpartialdensitiesofstatesarereportedandanalysed.Itisfoundthatoxygenatomic2pelectronsstronglyhybridizewithRb/orCd4dandS2pstates,resultingintwo-typeionicgroupswithweakcouplings.Itisshownthatmacroscopicdomainwallsoriginatefromsuchweak-couplingionicgroups,arisingatthecellboundaries.Theasymmetriccationbonds(Rb-OandCd-O)andthesubsequentrotationsoftheS04tetrahedracanleadtothedrivingforceoftheferroelectricbehaviour.Thepredictedpyroelectriccurrenteffectsareobservedexperimentallyintheferroelectricphase.
简介：ThespinelLiMn2O4-x(SO4)xcompoundcathodematerialsweresynthesizedbysolid-statereactionofthecalculatedamountsofLiOH·H2O,MnO2andMnSO4.Theresultsoftheelectrochemicaltestdemonstratedthatthesematerialsexhbitedexcellentelectrochemicalproperties.Thehighestreversiblecapacityoftheseseriesofcathodematerialswas-120mAh/g,andafter50cycles,thisreversiblecapacitywasstillaround116mAh/gwithnearly100%reversibleefficiency,whichrevealedthatdopedsulfateioncouldimprovethestructuralstabilityofspinel.
简介：ＳＹＮＴＨＥＳＩＳＯＦ３－ＡＲＹＬ－１（２Ｈ，４Ｈ）ＡＣＲＩＤＯＮＥＳＡＮＤＴＨＥＩＲＤＥＲＩＶＡＴＩＶＥＳ￥ＲｏｎｇＹＩＮ；ＧｕａｎｇＦａｎＨＡＮ；ＹｕＴｉａｎＬＩ（ＤｅｐａｒｔｍｅｎｔｏｆＭｅｄｉｃａｌＬａｂｏｒａｔｏｒｙ，ＪｉｌｉｎＭｅｄｉｅａ...
简介：Newmodelcompound1H,1′H-Bis（benz-Δ^4-imidazoline)2,2′-spiro-titaniumdichloridewaspreparedandthestructureofthecompoundwasdeterminedby1R,MSandelementaryanalysis.
简介：Thetitlecomplex,[La(baec)1/2(H2btec)1/2(H2O)]n(H4btec=1,2,4,5-benzenetetracarboxylicacid)(1)wassynthesizedbythehydrothermalreactionof1,2,4,5-benzenetetracarboxylicdianhydridewithLa(NO3)3·6H2OinH2O,andcrystallizesinthetriclinicsystem,spacegroupP-1withα=0.64403(3)nm,b=0.94500(4)nm,c=0.96380(5)nm,α=88.535(2)°,β=100.314(2)°,γ=76.6470(10)°,V=1.69968(10)nm^3,Z=2,andfinalR=0.0274,Rw=0.0735.In1,eachLa(Ⅲ）ioniscoordinatedbyeightoxygenatomsfromsixcarboxylategroupsandonecoordinatedwatermolecule.TwodifferentcoordinstionmodesofH4btecwerePresentinthestructure,oneofwhichcontainstwoprotonatedcarboxylategrougpstobalancethecharge.
简介：Twooxo-vanadium(IV)complexes,[VO(C2O4)(2,2′-bipy)(H2O)]·C2H5OH(1)andVO(C2O4)(phen)(H2O)(2),where2,2′-bipy=2,2′-bipyridyl,phen=1,10-phenanthroline,weresynthesizedaspotentialfunctionalmodelsofvanadiumhaloperoxidases(VHPOs)inmixedsolventofethanolandwateratroomtemperature.Thecomplexeswerecharacterizedbyelementalanalysis,infrared(IR),UV-VisandX-raycrystallography.Structuralanalysesshowedthatvanadiumatomwascoordinatedbyaterminaloxygen,oneoxygenatomfromcoordinatedwater,twooxygenatomsfromthecarboxylategroupofoxalicacid,andtwonitrogenatoms(N1andN2)from2,2′-bipy/phen.Centralvanadiumatomsincomplexes1and2werebothinadistorted-octahedralenvironment,andsomeintermolecularhydrogenbondinglinkageswerealsoobservedineachcomplex.BrominationreactionactivityofthetwocomplexeswasevaluatedwithphenolredasorganicsubstrateinthepresenceofH2O2,Br-andphosphatebuffer,indicatingthattheycanbeconsideredasapotentialfunctionalmodelofVHPO.Inaddition,thermalanalysiswasalsoperformedanddiscussedindetail.
简介：Rare-earthcompoundsolidsuperacidSO42-/TiO2/La3+wasprepared.Itscatalyticactivitywasexaminedunderdifferentsyntheticconditionsfortheesterificationofpropanoicacidandn-butylalcoholasprobingreaction.Theoptimumconditionswerealsofound,whichwerethepH=8,thedepositingtimewas24h,themassfractionofLa(NO3)3usedinsolidsuperacidwas5%,theconcentrationofH2SO4was1.25mol/L,thesoakingtimeinH2SO4was16handthecalciningtemperaturewas500°C.TheethyloleatewassynthesizedfromoleicacidandethanolinthepresenceofSO42-/TiO2/La3+.Theoptimumreactionconditionswereobtainedwhichwerethereactiontimewas6h,molarratioofoleicacidtoethanolwas1:4andthemassfractionofcatalystwas4%.
简介：TiO2nanoparticlesweresynthesizedbyahomogeneouscontrolledprecipitationmethodusingindustrialtitaniumsulfate(Ti(SO4)2).TheobtainedpowderswerecharacterizedbyX-raydiffraction(XRD),transmissionelectronmicroscope(TEM),Fouriertransforminfraredspectroscopy(FTIR)andICPplasmaspectrometer.EDTAwasusedascomplexingagenttoimprovethepurityandtheformationofTiO2nanoparticles.Experimentalresultsindicatedthatthehigh-purityTiO2nanoparticleswere20nminmeansizeandnearlymonodispersed.
简介：Theoccurrencemodesofalkaliandalkaline-earthmetals(AAEMs)incoalrelatetotheirreleasebehaviorandashformationduringcombustion.TobetterunderstandthetransformationofAAEMs,thereleasebehaviorofwater-soluble,HCl-soluble,HCl-insolubleAAEMsduringShenmucoal(SMcoal)oxy-fuelcombustioninthepresenceofSO2andH2Oinadrop-tubereactorwasinvestigatedthroughserialdissolutionusingH2OandHClsolutions.TheresultsshowthatthereleaseratesofAAEMsincreasewithanincreaseintemperatureunderthethreeatmospheresstudied.ThehighreleaseratesofMgandCafromSMcoalaredependentonthehighcontentofsolubleMgandCainSMcoal.SO2inhibitsthereleaseratesofAAEMs,whileH2Opromotesthem.TheeffectsofSO2andH2OontheNaandKspeciesaremoreevidentthanthoseonMgandCaspecies.AllthreetypesofAAEMsincoalcanvolatilizeinthegasphaseduringcoalcombustion.TheW-typeAAEMsreleaseexcessively,whereasthereleaseratesofI-typeAAEMsarerelativelylower.DifferenttypesofAAEMmayinterconvertthroughdifferentpathwaysundercertainconditions.BothSO2andH2Opromotethetransformationreactions.TheeffectofSO2wasrelatedtosulfateformationandthepromotionbyH2OoccursbecauseofadecreaseinthemeltingpointofthesolidaswellasthereactionofH2O.
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![A chemical oscillating reaction in NaBrO3-pyruvic acid-<b style='color:red'>H</b><b style='color:red'>2</b><b style='color:red'>SO</b><b style='color:red'>4</b>-[Ni（Me<b style='color:red'>2</b>[14]1,3-diene N<b style='color:red'>4</b>）]<b style='color:red'>2</b>+ system](/image/thesis3 "A chemical oscillating reaction in NaBrO3-pyruvic acid-<b style='color:red'>H</b><b style='color:red'>2</b><b style='color:red'>SO</b><b style='color:red'>4</b>-[Ni（Me<b style='color:red'>2</b>[14]1,3-diene N<b style='color:red'>4</b>）]<b style='color:red'>2</b>+ system")
![Crystal Structure and Bioactivity of Complex [Gd（C10<b style='color:red'>H</b>9N<b style='color:red'>2</b>O<b style='color:red'>4</b>）（C10<b style='color:red'>H</b>8N<b style='color:red'>2</b>O<b style='color:red'>4</b>）（<b style='color:red'>H</b><b style='color:red'>2</b>O）3]<b style='color:red'>2</b>·phen·<b style='color:red'>4</b><b style='color:red'>H</b><b style='color:red'>2</b>O](/image/thesis4 "Crystal Structure and Bioactivity of Complex [Gd（C10<b style='color:red'>H</b>9N<b style='color:red'>2</b>O<b style='color:red'>4</b>）（C10<b style='color:red'>H</b>8N<b style='color:red'>2</b>O<b style='color:red'>4</b>）（<b style='color:red'>H</b><b style='color:red'>2</b>O）3]<b style='color:red'>2</b>·phen·<b style='color:red'>4</b><b style='color:red'>H</b><b style='color:red'>2</b>O")
![Hydrothermal Synthesis and Structure of a New 3D Lanthanide—Carboxylate Framework,[La（btec）1／<b style='color:red'>2</b>（<b style='color:red'>H</b><b style='color:red'>2</b>btec）1／<b style='color:red'>2</b>（<b style='color:red'>H</b><b style='color:red'>2</b>O）]n（<b style='color:red'>H</b><b style='color:red'>4</b>btec=1,<b style='color:red'>2</b>,<b style='color:red'>4</b>,5—Benzeneteracarboxylic acid）](/image/thesis12 "Hydrothermal Synthesis and Structure of a New 3D Lanthanide—Carboxylate Framework,[La（btec）1／<b style='color:red'>2</b>（<b style='color:red'>H</b><b style='color:red'>2</b>btec）1／<b style='color:red'>2</b>（<b style='color:red'>H</b><b style='color:red'>2</b>O）]n（<b style='color:red'>H</b><b style='color:red'>4</b>btec=1,<b style='color:red'>2</b>,<b style='color:red'>4</b>,5—Benzeneteracarboxylic acid）")
![Synthesis of Novel Binuclear Samarium Thiolate Complexes [（THF）3I<b style='color:red'>2</b>Sm（μ-SAr）]<b style='color:red'>2</b> （Ar=Ph, <b style='color:red'>4</b>-Me<b style='color:red'>2</b>NC6<b style='color:red'>H</b><b style='color:red'>4</b>） and Crystal Structure of [（THF）3I<b style='color:red'>2</b>Sm（μ-S-<b style='color:red'>4</b>-Me<b style='color:red'>2</b>NC6<b style='color:red'>H</b><b style='color:red'>4</b>）]<b style='color:red'>2</b>](/image/thesis13 "Synthesis of Novel Binuclear Samarium Thiolate Complexes [（THF）3I<b style='color:red'>2</b>Sm（μ-SAr）]<b style='color:red'>2</b> （Ar=Ph, <b style='color:red'>4</b>-Me<b style='color:red'>2</b>NC6<b style='color:red'>H</b><b style='color:red'>4</b>） and Crystal Structure of [（THF）3I<b style='color:red'>2</b>Sm（μ-S-<b style='color:red'>4</b>-Me<b style='color:red'>2</b>NC6<b style='color:red'>H</b><b style='color:red'>4</b>）]<b style='color:red'>2</b>")
![Vanadium Haloperoxidases Model Compounds： Synthesis, Structural Characterization and Mimic Catalytic Bromination Activity of [VO（C_<b style='color:red'>2</b>O_<b style='color:red'>4</b>）（<b style='color:red'>2</b>,<b style='color:red'>2</b>′-bipy）（<b style='color:red'>H</b>_<b style='color:red'>2</b>O）]·C_<b style='color:red'>2</b><b style='color:red'>H</b>_5OH and VO（C_<b style='color:red'>2</b>O_<b style='color:red'>4</b>）（phen）（<b style='color:red'>H</b>_<b style='color:red'>2</b>O）](/image/thesis14 "Vanadium Haloperoxidases Model Compounds： Synthesis, Structural Characterization and Mimic Catalytic Bromination Activity of [VO（C_<b style='color:red'>2</b>O_<b style='color:red'>4</b>）（<b style='color:red'>2</b>,<b style='color:red'>2</b>′-bipy）（<b style='color:red'>H</b>_<b style='color:red'>2</b>O）]·C_<b style='color:red'>2</b><b style='color:red'>H</b>_5OH and VO（C_<b style='color:red'>2</b>O_<b style='color:red'>4</b>）（phen）（<b style='color:red'>H</b>_<b style='color:red'>2</b>O）")
