ASTM_D_5154_-_D_5154M_-_18.pdf

Designation:D5154/D5154M18Standard Test Method forDetermining Activity and Selectivity of Fluid CatalyticCracking(FCC)Catalysts by Microactivity Test1This standard is issued under the fixed designation D5154/D5154M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers determining the activity andselectivity of either equilibrium or laboratory deactivated fluidcatalytic cracking(FCC)catalysts.The activity is evaluated onthe basis of mass percent conversion of gas oil feed in amicroactivity unit.The selectivities are evaluated on the basisof mass percent yields of specifically defined products resultingfrom the catalytic cracking of gas oil feed.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D2887 Test Method for Boiling Range Distribution of Pe-troleum Fractions by Gas ChromatographyD3907 Test Method for Testing Fluid Catalytic Cracking(FCC)Catalysts by Microactivity TestD4463 Guide for Metals Free Steam Deactivation of FreshFluid Cracking CatalystsD7964 Test Method for Determining Activity of Fluid Cata-lytic Cracking(FCC)Catalysts in a Fluidized BedE105 Practice for Probability Sampling of MaterialsE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE456 Terminology Relating to Quality and StatisticsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 activitycalculated as conversion divided by the dif-ference of 100 minus conversion.3.1.2 ASTM reference catalystsa set of equilibrium FCCcatalysts within the useful range of this test method is used toimprove the reproducibility of test results between differentlaboratories.Each catalyst has a consensus mean conversionvalue assigned to it by Committee D32.Samples of the ASTMreference catalysts can be obtained through NIST.3.1.3 ASTM standard feeda specific batch of gas oil that isused as feedstock in the described test method.33.1.4 catalyst/oil(C/O)ratiothe mass of catalyst used inthe test divided by the mass of feed fed to the reactor.Inpractice,the mass of catalyst is usually maintained at aconstant value and the total mass of feed is varied.3.1.5 contact timecalculated as 3600/(WHSV C/O).Thisis the delivery time,in seconds,during which feed is intro-duced to the reactor.3.1.6 conversioncalculated as the difference between themass of feed used and the mass of unconverted materialdivided by the mass of feed used times 100%.The uncon-verted material is defined as all liquid product with a boilingpoint above 216 C 421 F.3.1.7 gasolineC5compounds through compounds boilingat 216 C 421 F.1This test method is under the jurisdiction of ASTM Committee D32 onCatalysts and is the direct responsibility of Subcommittee D32.04 on CatalyticProperties.Current edition approved May 1,2018.Published May 2018.Originallyapproved in 1991.Last previous edition approved in 2010 as D515410.DOI:10.1520/D5154_D5154M-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Formerly available from National Institute of Standards and Technology(NIST),100 Bureau Dr.,Stop 1070,Gaithersburg,MD 20899-1070,http:/www.nist.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.1.8 HCOthe heavy cycle oil product defined to have aminimum boiling