简介：以纳米稀土复合固体超强酸SO4^2-／ZrO2-Nd2O3为催化剂，乙酸和正丁醇为原料合成乙酸正丁酯。通过正交试验考察了反应条件对酯化率的影响。结果表明，最佳的反应条件是：乙酸用量为0．2mol时，乙酸与正丁醇摩尔比为1：1．4，催化剂用量为1．0g，回流分水反应时间为120win。在此条件下，酯化率可达98．8％。实验还发现，稀土复合固体超强酸SO4^2-／ZrO2-Nd2O3可多次重复使用并可活化再生，是一种稳定性高、选择性好的新型环境友好催化剂。

简介：3月17日零点，川维厂发电车间主控制室内的五防显示屏定格出“1800天”这个数字，标志着川维厂电力系统实现连续安全稳定运行时间创造了建厂37年以来的历史最好纪录，为企业长周期生产提供了保证。

简介：OnOctober18—19,2018,threeR&DachievementsforrealizingtheChinesecontentofcoalchemicalindustry,includingtheDCSsystemforSinopec’slargecoaldeepprocessingproject,themethanolsyngascompressortrain,andthelargewater-cooledandgas-cooledmethanolsynthesisreactors,hadpassedtheappraisalinOrdoscityofInnerMongolia.ItislearnedthatthesethreeprojectsarebeingappliedforthefirsttimeinChina’scoalchemicalindustrytosymbolizenewbreakthroughsintheChinesecontentofmajorequipmentownedbytheSinopecCorp.,whichboastsarangeofindependentintellectualpropertyrightstopushforwardthetechnicaladvancementofnationalindustry.

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简介：应读者要求，2010年《石油商技》将增设“知识问答”栏目，就一些润滑问题进行知识性介绍和分析。如果您有感兴趣的润滑问题，也可联系我们，我们将邀请专家作答。

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简介：Nitrobenzene-containingindustrialwastewaterwasdegradedinthepresenceofozonecoupledwithH2O2byhighgravitytechnology.Theeffectofhighgravityfactor,H2O2concentration,pHvalue,liquidflow-rate,andreactiontimeontheefficiencyforremovalofnitrobenzenewasinvestigated.TheexperimentalresultsshowthatthehighgravitytechnologyenhancestheozoneutilizationefficiencywithO3/H2O2showingsynergisticeffect.ThedegradationefficiencyintermsoftheCODremovalrateandnitrobenzeneremovalratereached45.8%and50.4%,respectively,underthefollowingreactionconditions,viz.:ahighgravityfactorof66.54,apHvalueof9,aH2O2/O3molarratioof1:1,aliquidflowrateof140L/h,anozoneconcentrationof40mg/L,aH2O2multipledosingmodeof6mL/h,andareactiontimeof4h.Comparedwiththeperformanceofconventionalstirredaerationmixers,thehighgravitytechnologycouldincreasetheCODandnitrobenzeneremovalraterelatedwiththenitrobenzene-containingwastewaterby22.9%and23.3%,respectively.

简介：Alkylationoftoluenewith2-chloro-2-methylpropane(t-Bu-Cl)tosynthesizepara-tert-butyltoluene(PTBT)wascarriedoutinthepresenceoftriethylaminehydrochloride-aluminumchlorideionicliquidsusedasthecatalyst.TheionicliquidswerepreparedwithdifferentmolarratiosofEt3NHCltoAlCl3,andtheeffectofthemolarratiobetweenAlCl3andEt3NHCl,thereactiontime,thereactiontemperature,theionicliquiddosage,aswellasthemolarratiooftoluenetochloro-2-methylpropaneonthealkylationreactionoftoluenewithchloro-2-methyl-propanewasinvestigated.ThetestresultsshowedthattheacidicionicliquidspreparedwithEt3NHClandAlCl3hadgoodactivityandselectivityforthealkylationreactionoftoluenewithalkylchloridetoproducePTBT.TheoptimalreactionconditionswerespecifiedatanAlCl3toEt3NHClratioof1.6,areactiontemperatureof20℃,amassfractionoftoluenetoionicliquidof10%,andachloro-2-methylpropanetotoluenemolarratioof0.5.Underthesuitablereactionconditions,a98%conversionofchloro-2-methylpropaneandan82.5%selectivityofPTBTwereobtained.Ionicliquidscouldbereused5timeswithitscatalyticactivityunchanged,andtheregeneratedionicliquidscanberecycled.

简介：TheesterificationoflauricacidwithmethanolcouldbeefficientlycatalyzedbyZrOCl2·8H2O,andthisreactionwasstudiedtodevelopagreenmethodforbiodieselproduction.Theinfluencingfactors,suchasamountofcatalyst,reactiontimeandmolarratioofacidtomethanol,wereinvestigated.TheresultsindicatedthattheZrOCl2·8H2Ocatalystshowedhighcatalyticactivity,andgavea97.0%methyllaurateconversionrateunderthefollowingoptimizedconditions,viz.:alauricacid/methanolmolarratioof1:10,acatalystdosageof4%,andareactiondurationof2hatmethanolrefluxingtemperature.Thecatalystcouldbeeasilyrecoveredwhileitsactivitycouldbewellretainedafterthreecycles.TheZrOCl2·8H2Ocatalystalsoexhibitedexcellentcatalyticactivityfortheesterificationofdifferentfreelong-chainfattyacids(includingnonedibleoilswithhighacidvalue)withdifferentshortcarbonchainalcohols.Therefore,theZrOCl2·8H2Ocatalysthasgoodpotentialforthesynthesisofbiodieselfromlow-costfeedstockssuchaswastevegetableoilsandnon-edibleoils.

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简介：有了合理的碳税政策,石油企业的二氧化碳驱油技术便有了最基本的原料保障。该项技术就可以大规模推广,整个二氧化碳捕集与封存产业链会变得更加完整,运行更加顺畅。

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简介：德国德固萨公司和美国Headwaters公司以50：50股份合资组建公司共同开发和工业应用H2O2直接法工艺。合作双方的目标是开发和建设大型的低成本H2O2生产装置，生产的H2O2将用作环氧丙烷(PO)等生产装置的原料。预定于2007年完成工艺开发，2008年建设第一套工业化装置。

简介：研究了Pd/Nb2O5—Al2O3催化剂的制备方法及用于丙酮加氢合成MIBK的催化性能。实验结果表明,在反应温度160℃,反应压力4MPa条件下,丙酮单程转化率为40％,MIBK选择性为92％。

简介：泰国湾盆地柬埔寨海域D区块属低勘探新区,邻区的石油地质综合研究较为深入,认识比较成熟,但是研究区内尚缺乏系统的层序地层划分方案。此次研究以二维地震资料为基础,结合边缘的一口钻井资料,分别进行了单井层序划分和地震层序划分,得到综合层序划分方案,最终划分出6套沉积层序,建立起了该区首套等时的层序地层格架。之后,以层序为单元,分析了地震相的剖面特征和平面展布。文中所用方法为海上低勘探地区的层序地层学研究提供了一条有效途径。

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：使用过氧化氢使丙烯氧化为环氧丙烷(PO)的新工艺，将首次由巴斯夫公司在比利时安特卫普建设300kt／a装置。该装置2006年建设，2008年投产。该HPPO工艺由巴斯夫和陶氏化学公司联合开发，不生成副产物。相比之下，常规的氯醇法或苯乙烯单体(SMPO)法生产PO。会分别产生含氯废物或大量苯乙烯单体。

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