简介：ThemaindisadvantageofmicroporousSSZ-13catalystusedinthemethanoltoolefins(MTO)processisitsrapiddeactivationduetoitsrelativelylowcokeresistance.Meanwhile,thehierarchicalzeolitesusuallyexhibitimprovedcatalyticstabilitythankstotheirbettermasstransferability.Herein,thehierarchicallynanoporousSSZ-13zeoliteswereone-potsynthesizedbyusingN,N,N-trimethyl-1-adamantanammoniumhydroxideasamicroporousstructuredirectingagentandC18H37N+(CH3)2C6H12N+(CH3)2C6H13(Br-)2(hereinafterabbreviatedasC18-6-6Br2)asamesoporogen.ThehierarchicallynanoporousSSZ-13catalystwascharacterizedbyXRD,N2physisorption,SEM,TEM,TG-DTG,27Aland29SiNMRspectroscopyandNH3-TPDtechniques.TheresultsshowedthatthehierarchicalSSZ-13zeolitesynthesizedinthepresenceoftheC18-6-6Br2surfactantexhibitsaggregatesofprimarynanocrystalsandcontainsthewell-developedmesoporesandexcellentacidity.Comparedtoitsconventionalcounterpart,thehierarchicalSSZ-13zeolitehaslongercatalyticlifetimeandhigherselectivityforethyleneandpropyleneintheMTOreaction,whichcanbeattributedtothesynergisticeffectoftheirgoodacidityandimproveddiffusionpropertiesresultedfromthehierarchicalporestructure.

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简介：ThestrontiummodifiedwasteFCCcatalystwaspreparedbymagneticstirringmethodandcharacterizedbyXraydiffractometry(XRD),UV-Visdiffusereflectancespectrometry(DRS),X-rayphotoelectronspectroscopy(XPS)andscanningelectronmicroscopy(SEM).Meanwhile,itsphotocatalyticdenitrogenationperformancewasevaluatedintermsofitsabilitytodegradetheN-containingsimulationoilundervisiblelight.Amixtureofstrontiumnitratesolution(withaconcentrationof0.5mol/L)andwasteFCCcatalystwascalcinedat400℃for5hpriortotakingpartinthephotocatalyticdenitrogenationreaction.ThetestresultsshowedthatthephotocatalyticdegradationrateofpyridinecontainedinsimulationoilinthepresenceofthestrontiummodifiedFCCcatalystcouldreach92.0%undervisiblelightirradiationfor2.5h.

简介：SINOPECYangziPetrochemicalResearchInstitute(YPRI)incollaborationwithEastChinaUniversityofScienceandTechnologyandtheOlefinPlantofYangziPetrochemicalCompanyhasconductedprocessoptimizationcalculations

简介：到在不同反应条件下面的石蜡(MTO)的甲醇的变换试验性地在不同催化剂上被调查，并且比较在SAPO-34andGOR-MLC催化剂之间被做。反应条件的优化被探索了。到在在不同反应温度下面的这些催化剂上的石蜡的甲醇的变换是试验性地，studied.Ina修理了床微反应堆，温度的影响被发现是石蜡产出的主要factors.Forboth催化剂之一当水被加到460-480degC的methanolfeed.A温度范围时，显著地被增加与适当催化剂活动和C_2-C_3石蜡对甲醇变换显得是最佳范围合适产量。一些另外的烃面对SAPO-34催化剂出现在MTO反应期间，当当GOR-MLC催化剂被使用时，很多ofdimethylether被形成时。在MTO反应期间，theGOR-MLC催化剂被发现让更快的催化剂释放与SAPO-34catalyst相比评价。

简介：K2Ti2O5andLixK2-xTi2O5sampleswithvaryingKcontents(x=0.125,0.15,0.3),targetedonremovaloftwomainenvironmentalpollutants:PMandNOx,weresynthesizedbythesolidstatemethodusingTiO2,KNO3andLiOH·H2OasstartingmaterialsandwerecharacterizedbyX-raydiffractometry,scanningelectronmicroscopy,andBET.ThecatalyticactivityoftitanatecatalystsonPMoxidationwasevaluatedusingthetemperatureprogrammedoxidation(TPO)method.ThetestresultsshowedthattheperovskitestructureofK2Ti2O5wasstillretainedafterdopingasmallamountofLi,andthecatalyticperformanceofLixK2-xTi2O5hadbeenimprovedsignificantlycomparedwiththatofK2Ti2O5.Li0.15K1.85Ti2O5catalysthadthehighestcatalyticactivitywithanignitiontemperatureof210℃andapeaktemperatureof290℃.ThecatalyticactivityofbothK2Ti2O5andLixK2-xTi2O5underintimatecontactwashigherthanthatunderloosecontact.Whentheexhaustgasflowratewasaround100mL/min,thecatalystsamplesshowedahighestactivity.TheLidopedK2Ti2O5couldbeanexcellentcandidateforPMoxidationduetoitshighoxidationactivity,waterstability,resistancetosulfurpoisoningandeconomicaladvantages.

简介：Effectsofhydrochlorideaciddealuminationofmordenite(MOR)catalystsforthesynthesisof1-phenyl-1-xylylethane(PXE)wereinvestigated.ThestructureandacidityofcatalystswerecharacterizedbyXRD,BET,XRF,FT-IR,27AlNMRandNH3-TPDtechniques.Thecatalyticperformanceoftheacid-treatedMORzeoliteswasstudiedthroughusingthealkylationofo-xylenewithstyrene.ThetestresultsshowedthatthestrengthofremainingBr?nstedacidsitesincreaseddespitethereductionoftotalnumberofacidsitesafterdealumination,andthemicroporesofHMORwereslightlyenlargedcoupledwiththeformationofsecondarymesopores.Additionally,themodifiedHMORzeolitesshowedlongercatalystlifewiththestyreneconversionrateretained.Amongthecatalystsemployedinthisstudy,themodifiedmordenitethatwasdealuminatedbyHCl(2mol/L)couldbeusedrepeatedlywithoutsignificantlossofactivityandselectivityduringsixcatalyticruns,whichhavebeenascribedtoitsspecificacidityandstructuralproperties.

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简介：与哈尔滨Devi自动化设备发展公司合作的Daqing石油化学的同伴的号码2化学植物，有限公司在butanol/octanol单位的含氧合成的反应堆采用了没有模型的控制系统完全在一次尝试在反应堆解决对CO集中的稳定的控制的问题在与反应化工物品的关系在含氧合成的反应堆优化反应条件，导致反应尾巴气体的分泌物和丙烯的减少的单位消费的重要减小。

简介：Methyl3-hydroxypropanoatewassynthesizedviahydroesterificationofethyleneoxidewithCOinthepresenceofdicobaltoctacarbonylcatalystandmethanolsolvent.Thecatalystexhibitedhighcatalyticactivity.Theeffectofreactiontemperature,COpressure,methanoldosage,catalystdosageandreactiontimeoncatalyticreactionwasinvestigated.Thetestresultsrevealedthatthisreactionwasgreatlyaffectedbyreactiontemperature,butitwasnotsignificantlyaffectedbytheCOpressure,themethanoldosage,thecatalystdosageandthereactiontime.Undertheoptimalconditions,theconversionofethyleneoxidewasequalto92.24%,whiletheselectivityandyieldofmethyl3-hydroxypropanoatereached88.99%and84.35%,respectively.

简介：Theenergybarriersofthermaldecarboxylationreactionsofpetroleumacidsandcatalyticdecar-boxylationreactionsofBrnstedacidandLewisacidwereanalyzedusingmolecularsimulationtechnology.Comparedwiththermaldecarboxylationreactionsofpetroleumacids,thedecarboxylationreactionsbyacidcatalystswereeasiertooccur.ThedecarboxylatoneffectbyLewisacidwasbetterthanBrnstedacid.Themechanismsofcatalyticdecarboxylationoveracidcatalystwerealsoverifiedbyexperimentsonafixedbedandafluidizedbed,theexperimentalresultsshowedthattherateofacidremovalcouldreachupto97%overtheacidiccatalystatatemperatureabove400.

简介：在概述乳液聚合及微乳液聚合特点的基础上,介绍了胶乳剪切分散法和微乳液聚合法制备超微胶乳,重点讨论了反应温度、乳化剂和引发剂对微乳液聚合法制备超微胶乳的影响.指出了目前超微胶乳研究中亟待解决的问题.

简介：Inthisstudy,titaniumdioxidesupportedbymulti-walledcarbonnanotubes(MWCNTs/TiO2)andCr-dopedTiO2supportedbyMWCNTs(MWNTs/Cr-TiO2)weresynthesizedbythesol-gelmethod.Thepreparedsampleswerecharacterizedbytransmissionelectronmicroscopy,X-rayphotoelectronspectroscopy,X-raydiffraction,theBrunauerEmmett-Telleranalysis,andtheRamanspectroscopy.TheoxidationandefficiencyforremovalofSO2inasimulatedfluegaswereinvestigatedexperimentallyinafixed-bedreactor.The15%MWCNTs/Cr-Ti02sampledisplayedexcellentadsorptionproperties,andaSO2removalrateequatingto30.4151mg/gfromthesimulatedfluegascontaining2300μg/gofSO2,8%of02,and5%ofH20wasachievedunderoptimalconditionscoveringatemperatureof333.15K,andaspacevelocityof1275h^-1.TheadsorptionprocesswasenhancedbecauseCrdopingmodifiedtheporestructureandinhibitedthegraingrowthofTiO2.Inaddition,theFreundlichandLangmuirmodelsrevealedthatSO2wasmainlyadsorbedthroughchemicaladsorptiononthesamplesurfaces,andthethermodynamicmodelanalysisindicatedthattheadsorptionwasaspontaneous,exothermic,andentropy-reducingprocess.TheadsorptionkineticsofSO2canbedescribedbythepseudosecond-orderkineticandtheBanghamdynamicsmodels.Thepossiblereactionmechanisminvolvedindesulfurizationprocesswasalsoproposed.

简介：7月3日，由宝石机械公司自主设计开发的我国首套8000米超深井钻机，在该公司下料生产。这是我国首次生产8000米超深井钻机，将使国产钻机系列更加完善。这套8000米超深井钻机是宝石机械为塔里木油田山前作业区量身打造的，能够满足特殊地理环境下超深井钻探的需求。该钻机的井架有效高度与常规的9000米超深井钻机井架有效高度相当，具有结构紧凑、配套齐全、重量较轻、操作安全等优点。

简介：金陵石化不断向环保要效益,通过汽提回收炼油酸性水中的污油,变废为宝。今年前10个月,累计回用污油11500t,环保和经济效益显著。目前,该公司运行二部拥有3套污水汽提装置,共11个含硫污水储罐,负责回收各单位炼油酸性水处理中产生的污油,3套装置的安全生产直接关系到整个公司安环任务和炼油指标的完成。

简介：采用荧光法测定了辽河油田杜84块杜55-53井超稠油乳化HLB值(亲水-亲油平衡值).以两性表面活性剂、非离子型表面活性剂为主剂,快速渗透剂为辅剂按一定比例制备了超稠油水基降粘剂SHVR-01.结果表明,该降粘剂具有良好的乳化降粘性能(降粘率达99%以上),同时易于破乳脱水,是一种较理想的超稠油水基降粘剂.

简介：中国科普网消息：由中科院大连化物所李灿院士负责的柴油氧化萃取超深度脱硫研究取得重大突破，目前已申请了两项中国发明专利。该成果被英国皇家化学会《GreenChemistry》杂志称为2004年国际绿色化学研究的亮点。

简介：近年来，中国石油天然气股份有限公司辽河石化分公司超稠油加工量猛增，大量高浓度的超稠油污水随之产生，冲击污水场并导致外排水严重超标。公司环保技术人员与中国石油大学（北京）科研人员展开联合攻关，通过对超稠油污水物理化学性质、破乳和净化条件的深入研究，开发出以“水质水量调节-破乳除油-旋流油水分离-浮选净化”为主体的超稠油污水预处理工艺，实现源头控制。装置建成后运行平稳高效，污水得到高效的处理与资源回收，装置出水含油低于200mg／L，CODcr低于2500mg／L，完全满足下游污水场进水要求。本工艺也为国内其它炼化企业中稠油污水问题的解决提供了指导方案。

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简介：InEnTec（IET）公司推出一种新技术，被声称在成本、环境质量、可能从废物中榨取价值及应用范围方面将大大改善废水处理。PlasmaEnhancedMelter（PEM）系统采用专门的、高度可控制的等离子体在独特的废物玻璃化系统加热从根本上改变废料。