学科分类
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3 个结果
  • 简介:nano-TiO2粒子被液体水解作用方法准备并且描绘了使用XRD。它对二个代表的抗菌剂活动细菌,Escherichiacoli和葡萄球菌aureus,也被学习。试验性的结果出现了在600700瑵椠?楶牴?整瑳?湡?敲慰物?的nano-TiO2calcinated???業散挠污慶楲污搠晥'太B.吗??

  • 标签: 纳米二氧化钛 抗菌活性 XRD表征 制备 水解液 金黄色葡萄球菌
  • 简介:Inthepresentstudy,aseriesofregenerationconditionsandtheregenerationmechanismofmodifiedlakesedimentbiochar(Fe-KOH/LSB)catalystsforlow-temperaturecatalytichydrolysisofcarbondisulfide(CS2)wereinvestigated.TheresultsshowedthatRm-WNAmethodhadthebestregenerationeffect.Underoptimalregenerationconditions,thesulfurcapacity(13.86mg[s]/g[catalyst])ofregeneratedFe-KOH/LSBwasclosetothatoffreshFe-KOH/LSB(14.88mg[s]/g[cataiyst]).Thewaterwashingprocesscouldwashawayasmallnumberofsulfatesandalargenumberofalkalinegroups.TG-DTAandDRTFIRresultsindicatedthatthenitrogensweepingprocesscoulddecomposeFe2(SO4)3intoFe2O3,whichpartiallyrecoveredthecatalyticandtheadsorptiveabilities.CO2-TPDresultsindicatedthatthealkalisteepingprocessoffer-OHgroups,furtherimprovingthecatalyticandtheadsorptiveabilities.After3times-regeneration,thesulfurcapacityofFe-KOH/LSBreached13.31mg[s]/g[cataiyst],indicatingthattheRm-WNAmethodhadgoodstabilityfortherecoveryofthecatalyticactivity.BET,XPSandXRDresultsrevealedthatthedecreaseofthesulfurcapacityforregenerationwasattributedtothedecreaseoftheadsorptiveabilitiesofCandSiO2.

  • 标签: REGENERATION condition modified lake sediment REGENERATION