醇类化合物在羟基氧化镍电极上的电催化氧化分析

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1、浙江工业大学2008届硕士毕业论文ELECTRO．CATALyZE．OXIDATl0INSTUDⅥNGOFALCOHOLCONⅡ'OI，NDS0NⅫCKEL．OXIDEELECTRODEABSTRACTCarboxyliccompoundsareveryimportantorganicchemicalmaterialsandintermediates，whicharewidelyappliedinpharmacy,pesticideanddyeindustries．Studyingonpreparationofdiglycolicacidbydirectelectrooxidation

2、diethyleneglycoloffersamethodtosyntheticorganicelectrochemistryalcohols．Inthisdissertation，nickel-oxidehydroxideelectrodeswerepreparedbyelectrochemicaloxidation-reduction．Atomicforcemicroscopy(aFM)andchronoamperometry,cyclicvoltammetryandconstantcurrentelectrolytewereusedtostudythesurfacecharact

3、erizationandrealareasofnickel—oxidehydroxideelectrode，studyelectrochemicalperformancetowardoxidationofdiethyleneglycolandsynthesizediglycolieacid，respectively．Thereactiontemperature，diethyleneglycolconcentration，currentdensitiesandvoltagewerestudiedinthereaction．Inordertostudythecharacteristicof

4、nickel-oxideIII浙江工业大学2008届硕士毕业论文hydroxideelectrodecatalyze—oxidationalcohols，oxidationofmethanolandglycerol011nickel—oxidehydroxideelectrodewereinvestigated，andthetemperature，reactionconcentrationsandscanrateswerestudiedintheprocess．Theexperimentalresultsshowedthatthesurfacegranuleofnickel·oxide

5、hydroxideelectrodespreparedbyelectrochemicaloxidation—reductionhadanano-configuration，whichenhancedtherealsurfaceareasofelectrodes．Comparedtopolishednickelelectrode，nickel··oxyhydroxideelectrodebehavedasanefficientelectro·-catalystfortheoxidationofalcoholsinalkalinemedium．Intheprocessofoxidation

6、methanol(unitaryalcoh01)，diethyleneglycol(dualityalcoh01)andglycerol(ternaryalcoh01)，wefoundthatelectrochemicalbehavesofmethanol，diethyleneglycolandglycerolwereresemble．Electrodeprocesswascontrolledbydiffusionprocess，withincreasingelectrolyteconcentrationandtemperature，whichincreasedthecurrentof

7、alcohols．Butnickel—oxidehydroxideelectrodehadlowstabilityandeasilylostactivity．Syntheticelectrochemicalofdiglycolicacidexperimentsshowed：(1)Theyieldofdiglycolicacidwas54．6percentproperlyat16．6mA／cm2inexperimental．Currentdens