简介：以壳聚糖和改性蒙脱土为原料，制备了改性蒙脱土与壳聚糖复合吸附剂。考察了复合吸附剂用量、显色剂双硫腙用量、溶液pH、反应温度及反应时间对Cu^2＋吸附率的影响。结果表明，在复合吸附剂用量0．4mL，吸附时间30min，显色剂用量1．5mL，溶液pH5．5—6．5，Cu^2＋浓度（0．1—0．5）×10^-3mg·mL^-1，反应温度60℃的条件下，复合吸附剂对Cu^2＋的吸附率可达90％以上。

简介：光作为一种环境友好的能源，能够在温和条件下定向活化CO2和烃类。为此，天津大学化工学院将光促表面催化反应技术应用于这一反应，制备出负载金属Cu的复合半导体WO3-TiO2光催化剂，并考察了这种材料对丙烯和二氧化碳吸附活化过程及其光促表面催化反应规律。

简介：ATi/Sicomplexzeolitehasbeenprepared.X-raydiffractionandinfraredspectrometrystudyhasshownthattwostructures,namelytheZSM-5andMCM-41,existinthesample.BETtestshaverevealedthatthecomplexzeolitecontainsregularmesoporesof2.6nm.UltravioletspectrometryanalysishasshownthattheTispeciesexistinthezeoliteskeletonintheformoftetra-coordinatevalence.TheTi/Sicomplexzeolite(TS-1/Ti-MCM-41)hasapparentlyimprovedcatalyticactivitywithrespecttothemacromolecularorganiccompoundoxidationascomparedtoindividualcomponentsofeitherTiorSicontainingzeolites(TS-1andTi-MCM-41).

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).