碳酸鋁銨熱分解法制備超細(xì)氧化鋁粉體.pdf

1、鄭州大學(xué)碩士學(xué)位論文碳酸鋁銨熱分解法制備超細(xì)氧化鋁粉體姓名：要紅昌申請學(xué)位級別：碩士專業(yè)：無機(jī)化學(xué)指導(dǎo)教師：李中軍2002.6.1幫特大學(xué)碩士學(xué)位論文PreparationofUltrafineAlumin2aPowdersbyPyrolysisofAmmoniumAluminiumCarbonateHydroxideABSTRACTUltrafinealuminapowderswerepreparedbypyrolysisofthea

2、luminiumprecursorpowdersobtainedbyprecipitationmethodusingaluminiumnitrateandammoniumcarbonateasrawmaterialsTheeffectsofprecipitatingprocessconditionsontheprecipitationformofproductsandthepropertiesofaluminapowdersobtain

3、edwerestudiedandtheoptimumpreparationconditionsformanufactureofmaxnoniumaluminiumcarbonatehydroxideweredeterminedThechangesofthethermochemicalbehaviours，phasestructure，particlesize，morphologyspecificsurfaceareaofprecurso

4、rintheprocessofcalcinationswerestudied，andTG／DTA、XRD、TEM、BETandsomeotherexperimentmethodshadbeenemployedtocharacterizedtheproductsInaddition，thesinteringabilityofaphasealuminapowdersaftercoldisostaticpressingoftheprecurs

5、orsat200MPaWasresearchedandthesinteringmechanismofaluminapowderWasalsodiscussedExperimentresultsshow：(1)Ultrafinealuminapowders，withparticlesizesintherangeof40—50nmandspecificsurfacearea30m2／g，Canbeobtainedbycalcinatingt

6、healuminiumprecursorsat1150“Cfor2h，whichweresynthesizedundertheconditionsofaluminiumnitratesolutiondrippedinto(NH4)2C03solutionatdropwisevelocity07L／hr，reactiontemperature37士2。C，themolarratioofammoniumcarbonatetoaluminiu