双氧水分解速率和稳定性研究

10.3969/i.issn.1008－6781.2010.03.0122009－6－17SRT85170802621988－061.314001.、pH、、、.pH3.5T35℃.、.TQ085.41A.1008－6781201003－0051－03StudyonDecompositionRateandStabilityofHydrogenPeroxideZHANGQingYINGChao－yanYUKe－naGUDong－huXIAOHai－huWUJian－yiSchoolofBiologicalandChemicalEngineeringJiaxingUniversityJiaxingZhejiang314001AbstractByusingpotassiumpermanganatetomeasuretheconcentrationofhydrogenperoxidethedecompositionrateofhydrogenperoxidewasdetermined.TheinfluencesoftemperaturepHmetalcoppermanganesezincionsonthedecompositionrateofhydrogenperoxidewerealsostudied.ResultsshowthatwhenpH3.5andT35℃hy-drogenperoxideisstableconsistentwiththereportedintheliteratureThestudyalsoindicatesthatmanganeseionsandzincionsdon＇tactasacatalystinthedecompositionofhydrogenperoxide.Inadditionthispaperreportshydrogenperoxidedecompositionkineticscurvewiththeroleofzincionsforthefirsttime..Keywordshydrogenperoxidedecompositionrateanalysisofpotassiumpermanganate0“”、、、、、、、.1－3..4－6.、、pHMn2+、Cu2+Zn2+.11.1KMnO4、Na2C2O2、CuSO4、MnSO4、ZnSO4、NaOH·15·22320105Vol.22No.32010.5JournalofJiaxingUniversityNa2C2O2.DELTA320pH－.1.21.2.1.0.07g50mL、5mL3mol/L100mL75℃2min.5C2O42－+2MnO4－+16H+=10CO2↑+8H2O+2Mn2+1.2.2.0.5mL50mL、10mL3mol/L.2MnO4－+5H2O2+6H+=8H2O+2Mn2++5O2↑1.340mL40℃0、5、10、20、30、40、50、70、90min.50℃60℃.1.4pH40mLpH=6.060℃0、20、40、60、80、100min.pH=3.6、pH=4.5.1.540mLCu2+60℃0、20、40、50、60、80、100、120、140、160、180min.Mn2+Zn2+.212.1k=α*exp－Ea/RTk.140、50℃60℃..40℃.2.2pH2pH=5.95pHpH=3.61pH3.5.2.3、、·25·2232pH.2.3.13..2.3.24.2.3.33T=60℃5.3312PH3.53Mn2+、Zn2+Cu2+.4T=60℃5T=60℃1.J.2005464－65.2.J.200222227－30.3.H2O2J.200421185－86.4.J.2002655－56.5.J.2006211－12.6.J.200514159－61.·35·