Designation:D4512−03(Reapproved2013)´1StandardTestMethodforVibratedApparentPackingDensityofFineCatalystandCatalystCarrierParticlesandPowder1ThisstandardisissuedunderthefixeddesignationD4512;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Footnote3wasupdatededitoriallyinMay2013.1.Scope1.1Thistestmethodcoversthedeterminationoftheappar-entpackingdensityoffinecatalystandcatalystcarrierpowderssmallerthan0.8mmindiameter.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D3766TerminologyRelatingtoCatalystsandCatalysisE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE456TerminologyRelatingtoQualityandStatisticsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1Definitions—SeeTerminologyD3766.4.SignificanceandUse4.1Thistestmethodisformeasuringtheapparentpackingdensityofcatalystorcatalystcarrierpowdersthataresmallerthan0.8mmindiameter.5.Apparatus5.1GlassCylinders,capacity100mL,feedandmeasuring.5.2Vibrator,3conventionalhand-held,withhardrubberormetalimpactor.5.3FeedFunnel,plastic,glass,ormetalasshowninFig.1.5.4RingStand,vibratorholderandclampsasshowninFigs.2and3.5.5Desiccator,withadesiccantgrademolecularsievesuchas4A.5.6Balance,havingsensitivityof0.1g.5.7DryingOven.6.Procedure6.1Heatanadequateamountofsample(s)at400615°Cfornotlessthan3h.Normally,thistreatmentcantakeplaceinair;however,inthecaseofmaterialsthatmightreactwithairatelevatedtemperatures(suchas,prereducedcatalys...
