学科分类
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217 个结果
  • 简介:许多年来,物理化学家一直希望观察到的一个现象是,在气相条件下生成离子化的乙炔聚集态物质时,乙炔三聚体的离子(C2H2)^3+能够形成新的共价键,从而得到苯的阳离子(C6H6)^+。如今,美国弗吉尼亚公立大学的研究人员已经提供了这一过程的最充分证据。他们根据离子活动性和解离数据,结合理论计算确认“(C6H6)^+在结构上与苯相同、稳定性与苯相同、离解行为与苯相同,因此它一定是苯!”由离子态的乙炔生成苯阳离子可能是科学家已经通过光谱望远镜从太空中观察到的多环芳烃的生成过程中的第一步。

  • 标签: 离子化 三聚体 C2H2 物理化学家 光谱望远镜
  • 简介:以固体超强酸S2O82-/ZrO2-SiO2作催化剂,用柠檬酸和正丁醇合成了柠檬酸三丁酯.考察了影响酯化反应的主要因素,确定了该酯化反应的最佳条件:柠檬酸用量为0.1mol,正丁醇与柠檬酸的摩尔比为4.8:1,催化剂用量(以柠檬酸质量计)1.4%,130~140℃下反应3.5h.此条件下柠檬酸的酯化率为95.1%.催化剂易与产物分离,再生后可重复使用.

  • 标签: 柠檬酸三丁酯 催化合成 ZrO2 酯化反应 SiO2 正丁醇
  • 简介:用TSQ-70GC/MS/MS色质仪分析了珠江口盆地100余个原油和生油岩样品,发现部分原油样品具有异常丰富的ααα-C29甾烷(20S)异构体。国内外许多学者认为甾烷ααα-C2920S/(20S+20R)值是最有效的成熟度指标,只与成熟度有关,其热成熟平衡值为0.50-0.55。珠江口盆地有部分油样甾烷ααα-C2920S/(20S+20R)值异常之高,最高达0.67,已超过其热平衡值,已超过了当地成熟、过成熟生油岩样品值。确认油源之后,发现离生油凹陷越远,运移距离越大的原油,其甾烷ααα-C2920S/(20S+20R)值越大。因此,ααα-C2920S(20S+20R)不仅与成熟度有关,还与运移距离有关。

  • 标签: 原油 ααα-C29甾烷 20S 运移效应 珠江口盆地
  • 简介:SZorbadsorptivedesulfurizationtechnologyisofgreatsignificanceontheproductionofcleangasolineinChina,buttheformationofZn2SiO4duringtheoperationinsorbentswouldbringforthnegativeimpactsonthedesulfurizationperformanceandthestabilityoftheprocessingunit.Byusingthein-situTPO,XRD,andIRtechniquestostudythemechanismofZn2SiO4formationunderoperatingconditions,itwasfoundthatthecoexistenceofacidandhydrothermalconditionscouldacceleratetheformationofZn2SiO4.Moreover,thestudyofZn2SiO4inhibitionmethodindicatedthatthedecreaseofoxygenconcentrationinregenerationgaswouldinhibittherateofZn2SiO4formation,andtheregenerationofZnSwouldtakeplaceinamildregenerationcondition.

  • 标签: S ZORB zinc SILICATE DESULFURIZATION DEACTIVATION
  • 简介:乌兹别克哈乌扎克和康德姆气田属于世界上典型的高含硫气田,试气作业中对高含H2S气井井控安全作业、硫化氢防护和设备防硫有着很高的要求。通过对硫化氢气体的成因、性质、危害的研究分析,总结出一整套安全防护技术措施。达到了降低施工风险、减少危害、延长设备使用寿命、有效控制硫化氢和保证安全施工的目的。对国内外其它高含硫气田试气作业也会起到借鉴作用。

  • 标签: 高含H2S气田 试气作业 防护技术
  • 简介:AninnovativeapproachtoH2Scapturehasbeendevelopedusingseveralmetal-basedionicliquids([Bmim]Cl·CuCl2,[Bmim]Cl·FeCl3,[Bmim]Cl·ZnCl2,[Bmim]Br·CuCl2,and[Bmim]Br·FeCl3)immobilizedonthesol-gelderivedsilica,whichissuperiortopurelyviscousionicliquidwithacruciallimitofhightemperature,lowmasstransferrate,andmassloss.TheadsorbentswerecharacterizedbytheFouriertransforminfraredspectrometer,transmissionelectronmicroscope,N2adsorption/desorption,X-rayphotoelectronspectroscopy,andthermalanalysistechniques.TheeffectsofthemetalandhalogeninIL,theloadingamountofIL,andtheadsorptiontemperaturewerestudiedbydynamicadsorptionexperimentsatagasflowrateof100mL/min.TheH2Sadsorptionresultshaveshowedthattheoptimaladsorbentandadsorptiontemperatureare5%[Bmim]Cl·CuCl2/silicageland20-50℃,respectively.H2Scanbecapturedandoxidizedtoelementalsulfur,and[Bmim]Cl·CuCl2/silicagelcanbereadilyregeneratedbyair.TheexcellentefficiencyofH2Sremovalmaybeattributedtotheformationofnano-scaledandhigh-concentration[Bmim]Cl·CuCl2confinedinsilicagel,indicatingthattheimmobilizationof[Bmim]Cl·CuCl2onthesol-gelderivedsilicacanbeusedforH2Sremovalpromisingly.

  • 标签: FUNCTIONALIZED IONIC LIQUID supported IONIC LIQUID
  • 简介:为了探索塔河油田石炭系盐下奥陶系储集层发育特征及成藏条件,实现新地区、新层位、新领域的突破,进一步扩大塔河油田外围盐下奥陶系含油气范围,实现增储上产,利用率先在盐下奥陶系完钻的S105井、S106井、S117井的地质录井、测井、测试等资料,结合区域地质资料,对S105井-S106井-S117井区内盐下奥陶系的区域构造特征、油源条件、储集条件、储盖组合、圈闭条件及油气藏类型进行了分析,得出的结论是盐下奥陶系恰尔巴克组—一间房组发育地层不整合-岩溶裂缝型圈闭,且油源充足,储集层发育,圈闭条件良好,易于油气成藏,指出了盐下奥陶系的勘探开发前景。

  • 标签: 塔河油田 盐下奥陶系 成藏条件 油气藏类型
  • 简介:采用中石化金陵分公司研究院研制的CI-50(Pd/丝光沸石)作C5/C6烷烃异构化催化剂。详细介绍了该催化剂的工业放大试验装置的工艺流程、首次开工过程中技术问题及处理方法。

  • 标签: C5/C6异构化 催化剂 工业放大试验 应用
  • 简介:OnDecember27,2013thelastoneofprocessunits–theisomerizationunitinthe600kt/apara-xyleneprojectwasputonstreamattheHainanRefiningandChemicalCompanyatthefirstattempttodelivermassiveparaxylene

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  • 简介:TheS-RHTtechnologyisdevelopedbyFRIPPforresiduehydrotreatinginthefixedbedinordertoprocessthehighsulfurcrudeandincreasetheyieldoflightdistillates.Thetechnologycanbeusedfortreatingvariouskindsofatmosphericresidues(AR)orvacuumresidues(VR)withatotalmetalcontentlessthan150ppmundertheoperatingconditionsofatemperaturerangingfrom360-410℃,ahydrogenpartialpressureof14-15MPa,aLHSVof0.20-0.30h-1andahydrogentooilratioof700-1000.AcertainamountoflightproductscanbeobtainedandthehydrotreatedatmosphericresiduecanfullymeettheneedsforthefeedstocktoRFCCorablendingfeedstocktoFCC.BasedontheS-RHTtechnology,a2Mt/aresiduehydrotreatingunithasbeenconstructedandsuccessfullystartedupatMaomingPetrochemicalCompanybytheendof1999.

  • 标签: RESIDUE HYDROTREATING combined CATALYST system rate
  • 简介:根据JCW(2007年8月9日),中国自称拥有5.4的一个全部的甲醇生产能力在2005的Mt/a和在2006的10Mt/a的一个全部的甲醇能力。与中国的快发展“s甲醇工业,包括存在单位的全部的甲醇能力,在建设中的单位和计划草根甲醇单位将到达60Mt/一旁边在2015的2010和70Mt/a。

  • 标签: 中国 甲醇容量 石化产品 储备战略
  • 简介:短短几个月时间,曾经乱堆乱放的垃圾废料以及杂乱无章的库房、工具柜、办公桌悄然退出了枣庄27站的视线,取而代之的是干净、整洁。

  • 标签: 枣庄 管理 办公桌 整洁
  • 简介:Itislearnedfromthe2013SummitForumonStrategicDevelopmentofCoal-to-NaturalGasinChinathattheChinaSedinEngineeringCompany,Ltd.hasdevelopedwithindependentintellectualpropertyrightstwoexperimentalfurnacesforpressurizedgasificationofcrushedcoal,5min

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  • 简介:Thelargemethanolsynthesistowerindependentlydevel-opedbyHangzhouLindaChemicalTechnologyEngineer-ingCompanyaftersigningacontractinApril2008willbeappliedatthe600kt/amethanolprojectatNinxiaBaota

  • 标签: 甲醇 杭州 产业合作 技术交流
  • 简介:Anovelhighgravitymulti-concentriccylinderelectrodes-rotatingbed(MCCE-RB)wasdevelopedfortheelectrocatalyticdegradationofphenolwastewaterinordertoenhancethemasstransferwiththeself-madeRuO2-IrO2-SnO2/Tianodes.Theinfluencesofelectriccurrentdensity,inletliquidcirculationflowrate,highgravityfactor,sodiumchlorideconcentration,andinitialpHvalueonphenoldegradationefficiencywereinvestigated,withtheoptimaloperatingconditionsdetermined.Theresultsshowedthatundertheoptimaloperatingconditionscoveringacurrentdensityof35mA/cm^2,aninletliquidcirculationflowrateof48L/h,ahighgravityfactorof20,asodiumchlorideconcentrationof8.5g/L,aninitialpHvalueof6.5,areactiontimeof100min,andaninitialphenolconcentrationof500mg/L,theefficiencyforremovalofphenolreached99.7%,whichwasimprovedby10.4%ascomparedtothatachievedinthenormalgravityfield.Thetendencyregardingthechangeinefficiencyforremovalofphenol,totalorganiccarbon(TOC),andchemicaloxygendemand(COD)overtimewasstudied.Theintermediatesanddegradationpathwayofphenolwerededucedbyhighperformanceliquidchromatography(HPLC).

  • 标签: high gravity RuO2-IrO2-SnO2/Ti ANODE ELECTROCATALYTIC oxidation