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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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effectoftemperatureonkineticparametersofdecompositionreactionofcalciumcarbonate
, PP. 26-30
Keywords: caco3,isothermalthermogravimetry,chemicalkinetics,compensationeffect,isokinetictemperature
Abstract:
inordertoinvestigatetheinfluenceoftemperatureonbehaviorofcalciumcarbonatedecomposition,especiallyonkineticparametersofthedecompositionreaction,theanalyticallypurecalciumcarbonatewascalcinedonaself？builtlargedosethermogravimetricanalyzer.theresultsindicatedthat,withanincreaseinthereactiontemperature,thereactivityindexofcalciumcarbonatedecompositionincreasedatstagestatewhilethekineticparametersdecreasedatstagestate.moreover,boththereactionindicesandthekineticparameterscanbedividedintothreestagesandthetemperatureturningpointsindifferentstageswerethesame.thephaseboundaryreaction(cylindricalsymmetry)theorywasmoresuitableforcalciumcarbonatecalcinationundern2atmosphere.thechangetrendofthelogarithmofreactionactivationwithtemperaturewassimilarasthatofthepre？exponentialfactor.thereexistedgoodlinerrelationshipandkineticcompensationeffectbetweenthem.theisokinetictemperatureofthecaco3calcinationwas842℃andthereactionrateconstantwas0.1049min-1derivedbythecompensationcoefficients.
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