亲水有机溶剂2f盐双水相体系中液2f液2f固边界的分析与相比数据库的建立

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1、东华人学硕Ij论文EXPLORINGTHELIQUID／LIQUID／SOLIDBOUNDARYANDCONSTRUCTINGTHEPHASERATIODATABASEINHYDROPHILICORGANICSOLVENT／SALTAQUEOUSTWO．PHASESYSTEMSABSTRACTAqueoustwophasesystem(ATPS)consistsofhydrophilicorganicsolvent(HOS)andsalt，whichisformedwhensaltexceedsaspecifi

2、cthresholdvalue．ItisgenerallybelievedthattheformationofHOS—saltATPSsresultsfromcompetitionbetweenhydrationoftheHOSandthesalt．Asanewlow-costtwo—phasesystem，theHOS-saltextractionsystemhasoutstandingadvantagessuchasrapidphaseseparationandmasstr．ansfer,lowtoxici

3、ty,lowviscosity，easyremovaloftheextractionreagent，easyoperation，whilethesystemisunlikelytocauseamildenvironmentdamageanddestructionofbiologicalsubstances．Thissystemhasbeenusedforpurificationandanalysis，andachievedthedesiredresults，whichalsogainedincreasingat

4、tentionUptonow，reportsonHOS—saltATPSmainlyfocusesonthedeterminationofbinodalcurveandliquid—liquidequilibrium(LLE)data，whileresearchforliquid／liquid／solidboundaryisrelativelyfew．Basedonpredictionofphaserule，wedeterminedtheliquid／liquid／solidboundariesofsomeHO

5、S-salts—watersystems．Aphaseratiodatabaseofethanol／(NH4)2S04／watersystemwasconstructedforcompensationforthelowforeseeabilityofATPS．Themaincontentsareasfollows：(1)Theoreticalderivationandpropertiesofliquid／liquid／solidboundary．BasedonGibbsphaseruleandleverrule

6、，wededucedthatthereisalinearrelationshipexistingontheliquid／】iqujd／solidboundary．Theliquid／liquid／s01．dtriple-phasedataofsomeATPSscontaininghydrophilicorganicsolventsandsimplesaltswereexplored．Thesystemsstudiedcompriseaqueoussolutionscontainingethanol，I-prop

7、anol，2-propanoloracetonewith(NH4)2S04，andsolutionscontaining1-propanolwith(NH4)2S04．NaCIorKCIatdifferenttemperature．Thelinearliquid／liquid／s01．dboundarieswereinvestigated．andtheeffectsoftemperature，solvent，andsaltontheboundarywereexplored(2)LLEdatainthecompl

8、etetwo-phaseregion．Phasediagramforethanol／(NH4)2S04／water东华大学硕士论文systemweredetermined，includingbinodalcurvedataandliquid／liquid／soliddata．Thecompletetwo-phaseregioninthephasediagramoftheethanol／