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过程工程学报 2003
StudiesofHeterogeneousHydrothermalStrippingfromIron-loadedNaphthenicAcid？Alcohol？KerosenKeywords: iron-loadedorganicphase,heterogeneoushydrothermalstripping,rateequation,nano-ferricoxide Abstract: Thetechniqueofhydrothermalstrippingfrommixedaqueous-organicsystemsisapromisingmethodforsynthesizingoxideceramicpowdersforhigh-performanceapplications.Somefactorsinfluencingheterogeneoushydrothermalstrippingwithwaterfromiron-loadedorganicphaseofnaphthenicacid？isooctylalcohol？kerosene,suchasinitialconcentrationsofironandnaphthenicacid,concentrationofFe2O3“seed”,temperatureandtime,wereinvestigated.Basedontheexperimentalresults,therateequationwasestablished.Nano-ferricoxidepowderswereobtainedbythetechniqueofhydrothermalstrippingfromtheiron-loadedorganicphase.Theresultssuggestthattheheterogeneoushydrothermalstrippingproceedsin3stepsadsorptionofnaphthenicaciddimersandnaphtheniccomplexofironontothesurfaceof“seed”,hydrolysisofadsorbedcomplexofiron,andcondensationofhydrolyzedcomplex.Theprocessactivationenergyis115kJ/molandtheheterogeneoushydrothermalstrippingiscontrolledbyachemicalreaction(thehydrolysisofnaphtheniccomplexofiron).
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