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1、JournalofAppliedElectrochemistry30:507±509,2000.507Ó2000KluwerAcademicPublishers.PrintedintheNetherlands.ShortcommunicationEectivesolutionresistivityinbedscontainingonemonolayerormultilayersofuniformsphericalglassbeadsL.J.J.JANSSENFacultyofChemicalEngineering,EindhovenUnive
2、rsityofTechnology,POBox513,5600MBEindhoven,TheNetherlandsReceived2June1999;acceptedinrevisedform21September1999Keywords:bedofglassbeads,monolayerofglassbeads,solutionresistivity1.Introductionapproximationsatisfactorilyrepresentedthedependenceoftheeectiveresistivityonthevolu
3、mefractione,withElectrolyserswithparallel-plateelectrodesareusedin-thedispersedphasecontainingabroadparticlesizedustriallytoproducegaseslikehydrogen,oxygenandrange.Theirexperimentswereperformedwithhomoge-chlorine.Thebubblelayeradjacenttoagas-evolvingneousswarmsofsphericalpa
4、rticles,obtainedbycon-electrodeconsistsoftwosublayers,namely,the®rsttinuouslyagitatingtheparticlesolutionmixturesuchsublayerwithbubblesattachedtotheelectrodesurfacethatthepositionofeachparticlechanges.andthesecondsublayerwithrisingbubbles[1].Thebubblesinthe®rstbubblesublaye
5、ratagas-Thediameteroftheattachedbubblesdeterminestheevolvingelectrodecanbeconsideredasbubblesattachedthicknessofthe®rstsublayer,mostlyintherangefromtotheelectrodesurfaceon®xedpositions.Tosimulatea10to100lm,dependingonmanyparameters:for®rstbubblesublayer,alayerofglassbeadswi
6、thanexample,natureofgasevolved,compositionofsolution,almostuniformdiameterwasplacedbetweentwosolution¯owrateandcurrentdensity[1,2].Thehorizontal¯atplateelectrodes.Theohmicresistancethicknessofthesecondsublayerismuchlarger;underofthesolutionlayerwithasinglebeadlayerwasindust
7、rialconditionsathicknessofafewmillimetres[3].determinedandcomparedtotheresultspredictedbyTheohmicvoltagedropinagas-evolvingelectrolyserisvariousmathematicalrelationships.Moreover,themainlydeterminedbythepresenceofbubblesintheohmicresistanceofthesolutionwasdeterminedforasolu
8、tion.Numerousinvestigationshavebeencarriedoutbedcontainingseverallayersofsuchbeads
