简介:以2,3-二氯萘醌与氨气为原料,甲醇作溶剂,制备了2-氨基-3-氯-1,4-茶醌。考察了反应条件对产品收率的影响,得到最件工艺条件:在二氯萘醌用量为0.1mol,氨与二氯萘醌的物质的量比为6,氨甲醇溶液含量15%~17%,反应温度20~25℃,反应时间4h,产品收率可达96%。
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).
简介:ThenickelcatalystSHN-01/Fforone-stagehydrotreatingofpyrolysisgasolinedevelopedbySINOPECShanghaiPetrochemicalResearchInstitutehassuccessfullycompletedcommercialtests,symbolizingthebeginningofcommercialapplicationphaseofthisnickel-basedcatalystforone-stagehydrotreatingofpyrolysisgasolinewithSINOPEC'sindependentintellectualpropertyrights.
简介:介绍了橡胶促进剂2,2′-二硫代二苯并噻唑主要生产方法,包括采用亚硝酸钠、氯气、次氯酸钠作氧化剂的传统生产方法和氧气作氧化剂的新工艺,并分别对其优缺点进行了对比。传统的生产方法原料成本高,废水、废气对环境污染严重,不符合绿色化工发展的要求;氧气作氧化剂生产橡胶促进剂DM不仅原料易得,成本低,无污染,而且母液可循环使用,基本无废水排放。中试已成功生产出合格产品,符合大规模工业化生产要求,有广阔的工业应用前景。
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.