简介：Thedeterminedresultsofthesulfurcontentsandisotopiccompositionofcoalsamplesfrommajorcoalminesin15provincesandregionsofChinashowthatthecoalminedinthenorthofChinaischaracterizedbyhigher^34Sandlowersulfurcontent,butthatinthesouthofChinahaslower^34Sandhighersulfurcontent.Duringthecoal-burningprocessinbothindrstrialanddailyuseofcoalasfuelthereleasedsulfurdioxideisalwaysenrichedinlightersulfurisotoperelativetothecorrespondingcoal;theparticlesarealwaysenrichedinheaviersulfurisotope.Thediscussionontheenvironmentalgeochemicalsignificanceoftheabove-mentionedresultsalsohasbeenmade.

简介：Insituchemicaloxidationpolymerizationofpyrroleonthesurfaceofsulfurparticleswascarriedouttosynthesizeasulfur/polypyrrole(S/PPy)nanocompositewithcore-shellstructure.Thecompositewascharacterizedbyelementalanalysis,X-raydiffraction,scanning/transmissionelectronmicroscopy,andelectrochemicalmeasurements.XRDandFTIRresultsshowedthatsulfurwelldispersedinthecore-shellstructureandPPystructurewassuccessfullyobtainedviainsituoxidativepolymerizationofpyrroleonthesurfaceofsulfurparticles.TEMobservationrevealedthatPPywasformedandfixedtothesurfaceofsulfurnanoparticleafterpolymerization,developingawell-definedcore-shellstructureandthethicknessofPPycoatinglayerwasintherangeof20-30nm.Inthecomposite,PPyworkedasaconductingmatrixaswellasacoatingagent,whichconfinedtheactivematerialswithintheelectrode.Consequently,theaspreparedS/PPycompositecathodeexhibitedgoodcyclingandrateperformancesforrechargeablelithium/sulfurbatteries.TheresultingcellcontainingS/PPycompositecathodeyieldsadischargecapacityof1039mAhg-1attheinitialcycleandretains59%ofthisvalueover50cyclesat0.1Crate.At1Crate,theS/PPycompositeshowedgoodcyclestability,andthedischargecapacitywas475mAhg-1after50cycles.

简介：Lithium-sulfur（Li-S）batteriesbelongtooneofthepromisingtechnologiesforhigh-energy-densityrechargeablebatteries.However,sulfurcathodessufferfrominherentproblemsofitspoorelectronicconductivityandtheshuttlingofhighlydissolublelithiumpolysulfidesgeneratedduringthecycles.Loadingsulfurintoporouscarbonshasbeenprovedtobeaneffectiveapproachtoalleviatetheseissues.Mesoporousandmicroporouscarbonshavebeenwidelyusedforsulfuraccommodation,butmesoporouscarbonshavepoorsulfurconfinement,whereasmicroporouscarbonsareimpededbylowsulfurloadingrates.Here,acore-shellcarbon,combiningboththemeritsofmesoporouscarbonwithlargeporevolumeandmicroporouscarbonwitheffectivesulfurconfinement,waspreparedbycoatingthemesoporousCMK-3withamicroporouscarbon（MPC）shellandservedasthecarbonhost（CMK-3@MPC）toaccommodatesulfur.Aftersulfurinfusion,theas-obtainedS/（CMK-3@MPC）cathodedeliveredahighinitialcapacityofupto1422mAh·g-1andsustained654mAh·g-1reversiblespecificcapacityafter36cyclesat0.1C.Thegoodperformanceisascribedtotheuniquecore-shellstructureoftheCMK-3@MPCmatrix,inwhichsulfurcanbeeffectivelyconfinedwithinthemeso/microporouscarbonhost,thusachievingsimultaneouslyhighelectrochemicalutilization.

简介：Chinahaspublishedastricteremissionstandardforthermalpowerplantsinordertohelpreducethepowerindustry'ssulfurdioxideemissionsbyoversixmillio

简介：Anincubationexperimentwascarriedoutinlaboratorytostudytheeffectoftemperature,moisture,phosphorus,organicmatter,croppingandpreviouselementalsulfurapplicationonelementalsulfuroxidationinfourselectedsoils,fluvo-aquicsoil,blacksoil,yellow-brownsoilandredsoil,Inallthesoilstested,sulfuroxidationratewasinfluencedbytemperatureandthetemperaturecoefficient(Q10)valuesattherangefrom10to30℃were4.41,,6.19and3.71forthefoursoils,respectively.Therateofsulfuroxidationwasparabolicallyrelatedtosoilwatercontent.Theoptimummoisturecontentforthemaximumoxiationratewasdifferentamongsoils,Phosphorusincreasedtheoxidationrateofelementalsulfurby57.7%,33.1%,21.7%and26.4%fortheabovefoursoils,respectively,comparedwiththecontrol(nophosphorusapplied).Organicmaterialofcornstrawwhichwasgoundandpassedthrougha0.5-mmsievealsoincreasedthoxidationrateofelementalsulfurinthefoursoilsby59.8%,7.8%,39.2%and540.4%,respectively.Elementalsulfurwhichwasappliedpreviouslytosoilssignificantlyenhancedtheoxidationofelementalsulfursubsequentlyaddedandincreasedsulfur-oxidizingpopulationssuchasautotrophicelementalsulfuroxidizerswithpHoptimum6.8,autotrophicthiosufateoxidizerswithpHoptimum6.8,heterotrophicthiosulfateoxidizersandheterotrophicsulfateproducers.Croppinghadlittleeffectonelementalsulfur-oxidizingpotentialityofsoils.

简介：Sulfurcontentisoneofthefuelpropertiestobemonitored.Sulfurdioxide,themajorproductderivedfromorganicsulfurcompoundsintheexhaustgasemissions,isapoisontothethree-waycatalysts(TWC).AgasmixturewasappliedtosimulatetheexhaustgasesusedintheTWCagingproceduretests.TwotypesoftheTWC,REX-ⅡCandREX-ⅡD,weretestedinthisstudy.TheperformanceofbothTWC'sbeforeandafterthe100-hoursulfuragingprogramwascompared.ItwasconcludedthatthePtcomponentintheTWCwasapttobepoisonedbysulfurmucheasilythanRh.TheperformanceoftheREX-ⅡDcatalystwasgenerallybetterthanthatoftheREX-ⅡCcatalyst.

简介：在FCC汽油的硫混合物的形成上的石蜡的效果在在从400～500的温度联合起来的一张小规模的固定的使流体化的床(FFB)上被学习，重量时时10h-1的空间速度(WHSV)，和6的催化剂/油比率。结果证明在FCC汽油包含的C4-C6石蜡能与H2S反应主要形成thiophenes，alkyl-thiophenes以及thiols的部分数量，当象heptene那样的大分子的石蜡能与形成benzothiophenes的氢硫化物反应时。在不同催化剂上在不同温度形成的硫混合物的数量与在化工物品的石蜡的集体部分成比例，与在REUSY催化剂超过上形成的硫混合物的数量，那些在石蜡变换的度上由于催化剂性能的效果和催化剂的影响在形状上形成了选择沸石催化剂。因为为硫的形成的热力学、运动的常数上的温度的影响，在450点的最大值和在400点的最小象在石蜡变换degree.Based上一样加重在上的产生的硫混合物和他们到达的增加的数量上述学习，为与H2S在FCC汽油在石蜡的反应之上产生的硫混合物的预言的一个反应网络和一个模型被建立。

简介：Forthefirsttime,wepresenttherareearthelement(REE)andsulfurisotopiccompositionofhydrothermalprecipitatesrecoveredfromtheTangyinhydrothermalfield(THF),OkinawaTroughatawaterdepthof1206m.Thenaturalsulfursamplesexhibitthelowest∑REEconcentrations(∑REE=0.65×10^-6-4.580×10^-6)followedbymetalsulfides(∑REE=1.71×10^-6-11.63×10^-6).Bycontrast,thenaturalsulfur-sedimentsampleshavemaximum∑REEconcentrations(∑REE=11.54×10^-6-33.06×10^-6),significantlylowerthanthoseofthevolcanicandsedimentsamples.Nevertheless,theδEu,δCe,(La/Yb)N,La/Sm,(Gd/Yb)Nandnormalizedpatternsofthenaturalsulfurandmetalsulfideshowthemostsimilaritytothesediment.MosthydrothermalprecipitatesamplesarecharacterizedbyenrichmentsofLREE(LREE/HREE=10.09-24.53)aridslightlynegativeEuanomaliesornoanomaly(δEu=0.48-0.99),whicharedifferentfromthehydrothermalfluidfromsediment-freemid-oceanicridgesandback-arebasins,butidenticaltothesulfidesfromtheJadehydrothermalfield.Thelowertemperatureandmoreoxidizingconditionsproducedbythemixingbetweenseawaterandhydrothermalfluidsfurtherattenuatetheleachingabilityofhydrothermalfluid,inducinglowerREEconcentrationsfornaturalsulfurcomparedwithmetalsulfide;meanwhile,thenegativeEuanomalyisalsoweakenedoralmostabsent.Thesulfurisotopiccompositionsofthenaturalsulfur(δ^34S=3.20‰-5.01‰,mean4.23‰)andmetalsulfidesamples(δ34S=0.82‰-0.89‰,mean0.85‰)revealthatthesulfurofthechimneyissourcedfrommagmaticdegassing.

简介：

简介：FifteenuplandsoilscollectedfromthemajorarableareasinNOrthChinawereusedtoassesstheavailabilityofsoilsulfur(S)toplantsinapotexperiment.SoilswereextractedwithvariousreagentsandtheextractableSwasdeterminedusingturbidimetricmethodorinductivelycoupledplasmaatomicemissionspectrometry(ICP-AES),respectively.Inaddition,mineralizableorganicS,organicS,N/Sratio,sulfuravailabilityindex(SAI)andavailablesulfurcorrectionvalue(ASC)insoilswerealsodetermined.TheSamoutextractedby1.5gL^-1CaCl2wasnearlyequivalenttothatby0.25molL^-1KCl(40℃),andbothofthemwereslightlysmallerthanthatby0.01molL^-1Ca(H2PO4)2solution,asmeasuredbyturbidimetricmethodorICP-AES.TheextractableSmeasuredbyturbidimetricmethodwasconsistentlysmallerthanthatbyICP-AES.AllmethodstestedexceptthatfororganicSandN/SratioproducedsatisfactoyresultsintheregressionanalysesoftherelationshipsbetweentheamountsofSextractedandplantdrymatterweightandSuptakeinthepotexperiment,Ingeneral,0.01molL^-1Ca(H2PO4)2-extractedSdeterminedbyICP-AESorturbidimetricmethodand0.25molL^-1KCl(40℃)-extractedSdeterminedbyICP-AESappearedtobethebestindicatorsforevaluationofsoilavailableS.

简介：Therestrictiononsulfurlevelingasolinehasbeenincreasinglytightened.TheU.S.TierⅡregulationrequiresareductionfromaverage340ppmto30ppmfrom2004to2008.Recentlysignificantprogresshasbeenmadeineffectivehighsulfurremoval,suchasposttreatmentofFCCgasolinebyselectivehydrotreating,SZorbsulfurremovaltechnology,OATSprocessetc.ThesulfurcontentofFCCgasolinecanbedeceasedtolessthan10ppm.WithregardtogasolinepoolcompositioninChina,itisveryimportanttolookforeffectivedesulfurizationprocessesthataresimple,straightforward,withlesshydrogenconsumption.Post-treatmentofFCCgasolineisapreferredoption.Fromthepointofviewofcomprehensiveutilization,alkylation,polymerization,isomerisationetc.canbeaddedtodesulfurizationprocesstomeettherequirementofultralowsulfur,premium.

简介：<正>TherulesofMIPreactionsforcatalyticcrackingofsulfurcompoundsanditsinfluenceonthesulfurcontentintheMIPnaphthawerestudied.ThemamfactorsinfluencingthesulfurcontentintheMIPnaphthawerethoughttobethesulfurcontentoffeedstockandwerecloselyrelatedwiththeolefincontentofnaphtha.TakingintoaccountthecharacteristicfeaturesofMIPprocess,themethodsforreducingthesulfurcontentintheMIPnaphthawerecomprisedofdecreasingthesulfurcontentoffeedstockbyhydrotreatinganddecreasingtheolefincontentofnaphthathroughpromotinghydrogentransferreactions.Therefore,theEuroⅣcleangasolinewithlowsulfurcontentandlowolefincontentcouldbeobtaineddirectlythroughtheMIPtechnology.

简介：InsituhighpressureopticalabsorptionmeasurementsofsulfurhavebeencarriedoutbyusingDACdevicewithaTASCOV-550UV-VISspectrophotometeratpressuresupto41.6GPa.Thecurvesofabsorptionedgevspressurewereobtained.inwhichtherearetwoturningpointsatabout5and12GPa,correspondingtotwochangesofcolourintheopticalobservation:oneisfromyellowtoredandtheotherfromredtoblackat5-6\5and10-12GPa,respectively.Theabsorptionedgereachesabove800nmwhenthepressureisincreasedto23GPa.Thesturctureandphasetransitionshavealsobeeninvestigatedbyusinginsituhighpressureenergy-dispersivex-raydiffractionwithsynchrotronradiationatpressuresupto33.7GPa.Nostructurephasetransitionoccursat5-6GPa.butthereisanewhigh-pressurephase,causedprobablybythereorientationororderingofS8.

简介：减少硫的功能的部件--吊楔酸硷的对化合物--并且联系活跃沸石部件被开发为在汽油减少硫内容准备RFCC催化剂DOS。催化剂评估的结果表明了酸硷的对化合物在此开发了的吊楔能提高分子的硫由催化剂加重支持desulfurization反应继续的宏的变换，并且酸硷的对化合物能毫无疑问减少的选择沸石和吊楔的合作行动在汽油的石蜡和硫内容。因此开发的催化剂DOS的重油变换能力更高结合了一个提高的电阻到重金属污染在超过20%在汽油减少硫内容。在西诺佩克·久贾恩格·布朗奇公司的这催化剂的商业应用程序表明了与GRV-C催化剂相比，催化剂DOS获得的油泥浆收益在汽油与一种改进coke选择，增加的全部的液体收益，和一个减少的石蜡内容一起被减少。在汽油/硫在的硫的比率喂油能被20.3m%减少。

简介：Thestructural,electronic,andelasticpropertiesofZnSe1-xSxforthezincblendestructureshavebeenstudiedbyusingthedensityfunctionaltheory.Thecalculationswereperformedusingtheplanewavepseudopotentialmethod,asimplementedinQuantumESPRESSO.Theexchange-correlationpotentialistreatedwiththelocaldensityapproximationpz-LDAfortheseproperties.Moreover,LDA+Uapproximationisemployedtotreatthe"d"orbitalelectronsproperly.AcomparativestudyofthebandgapcalculatedwithinbothLDAandLDA+Uschemesispresented.Theanalysisofresultsshowconsiderableimprovementinthecalculationofbandgap.Theinclusionofcompositionaldisorderincreasesthevaluesofallelasticconstants.Inthisstudy,itisfoundthatelasticconstantsC11,C12,andC44aremainlyinfluencedbythecompositionaldisorder.Theobtainedresultsareingoodagreementwithliterature.

简介：摘要：在中国支持干净的煤资源的合理发展和使用，数据在上地区性并且在中国煤的硫，砷和另外的有害元素的年龄分发广泛地被收集，为内容测试了，并且分析。在西北的中国的煤被描绘由对低极其硫的底层；在北中国的太原形成的煤主要有高硫的内容；山西形成的被低硫煤主要描绘；并且在南部的中国的晚二叠的煤有全面的更高的硫内容；另外的区域有低硫煤。在中国的煤的体积的有害踪迹元素的平均内容类似于在北美洲的煤和世界的其余部分的相应内容，而各种各样的元素的内容(Hg，Sb和Se)在到在外壳中的相应百分比的大小是不同的。元素Cr的平均内容，Se，公司，，U，而在对在N中国的早二叠的年龄近来含碳的煤的Hg和CI的平均内容最高，在在S中国的晚二叠的煤的Br在这个国家评价第一。在早、中间的侏罗记煤的Mn的平均内容在NW中国是更高的。在一些煤的有害元素的高内容应该在煤的发展和利用引起特别担心两个。

简介：Thispaperhasinvestigatedtheinfluenceofgasolinesulfurcontentondurabilityofcatalyticconverterforvehicleexhaustgas.Twogasolinesampleswithdifferentsulfurcontents(equatingto150μg/gand50μg/gofsulfur,respectively)wereusedtoexaminethedurabilityandperformanceofcatalyticconverteronthebenchtest.Thetestresultshaverevealedthatincomparisontotheinfluenceofsulfuronageingofcatalyticconverterthethermalageinghadamoreremarkableimpactontheperformanceofcatalyticconverter,andtheperformanceofcatalyticconvertercouldberestoredbyhigh-temperaturedesulfurizationprocessafterageingbythehigh-sulfurgasolinesample(containing150μg/gofsulfur).

简介：硫的稳定的同位素的分析(34S)是为在土壤识别硫的来源的一个有用工具。水溶性的硫酸盐(WSS)的集中和硫(S)同位素，吸附的硫酸盐(作为)，剩余硫(RS)，和在四个中国省的无教养的表面土壤的全部的硫(TS)系统地为在土壤识别S的来源被分析。格林和健康苔藓(Haplocladiummicrophyllum)作为bioindicators被取样。吝啬的WSS集中(27.8±在表面土壤的23.4mgkg−1)是比那些低的作为(101.4±57.0mgkg−1)和RS(381.5±256.7mgkg−1)。吝啬的34WSS并且作为的S价值是很类似的(大约2.0%)，RS(8.0%)和TS(6.1%)比那些降低。重要线性关联在34S价值作为并且WWS(y=1.0002x–0.0557，P<0.0001)，在土壤显示那硫酸盐吸附显著地分别S。在贵州省的土壤的所有S种类被最低34S价值，与大多数34弄空S的雨水硫酸盐在贵州的Guiyang报导了省。34在以前报导的苔藓和雨水的硫酸盐的S值线性地显著地WWS并且作为在表面土壤与那些被相关，建议那大气的S输入是为土壤WSS并且作为的重要来源。然而，在雨水硫酸盐和RS或TS的同位素的作文之间没有重要关联。所有这些重要线性关联的斜坡(土壤/雨水或土壤/苔藓同位素的比率)是0.4–0.6，在表面土壤显示那无机的硫酸盐应该是与更多的34弄空S的硫酸盐部件可能从RS的矿化作用。

简介：Theneedforcleanerfuelshasresultedinacontinuingworldwidetrendtoreducedieselsulfurandaromatics.Therearemanyapproachestoreducingsulfurandaromaticsindiesel.Mostofthemhaveacommondrawbackofhighcostbecauseofadoptingtwostagesofhydrotreatingandusingnoble-metalcatalyst,especiallyforreducingaromatics.TheattempttoresolvethisissuehasledtotherecentdevelopmentoftheSingleStageHydrotreating(SSHT)processbyResearchInstituteofPetroleumProcessing(RIPP),SINOPEC.TheSSHTprocessisasingle-stagehydrotreatingtechnologyforproducinglowsulfurandlowaromaticsdiesel.Theprocessusesoneortwonon-noble-metalcatalystssystemandoperatesatmoderatepressure.Whenrevampinganexistingunittomeetlowaromaticsdieselspecification,theonlythingtodoistoaddareactororreplacetheexistingreactor,Inpilotplanttests,theSSHTtechnologyhassuccessfullytreatedSRGO(StraightRunGasOil),LCO(LightCycleOil)ortheblendofthem.ItisshownthatbyusingtheSSHTprocessdieselwithsulfurof30ppmandaromaticsof15m%canbeproducedfromMiddle-EastSRGOanddieselwitharomaticscontentof25m%canbeproducedfromcrackedfeed,suchasFCC-LCO.Highdieselyieldandcetanenumbergain(fromcrackedfeedstocks)givetheSSHTtechnologyaperformanceadvantagecomparedtoconventionalhydrocrackingandhydrotreatingprocesses.Thelowerinvestmentandoperatingcostisanotheradvantage.ThefirstcommercialapplicationoftheSSHTtechnologyhasbeeninoperationsinceSeptember2001.

简介：Throughmanyyears'cooperation,SGCCandShanghaiSilicateResearchInstituteofChineseAcademyofSciencesuccessfullydeveloped650ampere-hourscapacitysodium-sulfurmonomericstoragebatterywiththeindependentintellectualpropertyright