ASTM D4512-22

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Designation: D4512 − 03 (Reapproved 2018) D4512 − 22
Standard Test Method for
Vibrated Apparent Packing Density of Fine Catalyst and
Catalyst Carrier Particles and Powder
This standard is issued under the fixed designation D4512; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
ε NOTE—Section 6.5 was updated editorially in May 2018.
1. Scope
1.1 This test method covers the determination of the apparent packing density of fine catalyst and catalyst carrier powders smaller
than 0.8 mm in diameter.
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D3766 Terminology Relating to Catalysts and Catalysis
E105 Guide for Probability Sampling of Materials
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or
Process
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1272 Specification for Laboratory Glass Graduated Cylinders
3. Terminology
3.1 Definitions—See Terminology D3766.
This test method is under the jurisdiction of ASTM Committee D32 on Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-Mechanical
Properties.
Current edition approved May 1, 2018Aug. 1, 2022. Published June 2018August 2022. Originally approved in 1985. Last previous edition approved in 20132018 as
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D4512–03(2013).D4512 – 03(2018) . DOI: 10.1520/D4512-03R18E01.10.1520/D4512-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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D4512 − 22
FIG. 1 Feed Funnel
4. Significance and Use
4.1 This test method is for measuring the apparent packing density of catalyst or catalyst carrier powders that are smaller than 0.8
mm in diameter.
5. Apparatus
5.1 Graduated Glass or Plastic Cylinders, capacity 100 mL, feed and measuring.measuring, Class A or B per Specification E1272.
5.2 Vibrator, conventional hand-held, with hard rubber or metal impactor.
5.3 Feed Funnel, plastic, glass, or metal as shown in Fig. 1.
5.4 Ring Stand, vibrator holder and clamps as shown in Figs. 2 and 3.
5.5 Desiccator, with a desiccant grade molecular sieve such as 4A.
5.6 Balance, having sensitivity of 0.1 g.
5.7 Drying Oven.
6. Sample
6.1 Test sample shall be obtained from larger composites by riffling or splitting in accordance with subsection 5.12 of STP 447A
with the aim of obtaining a sample that represents the particle size distribution of the larger composite. Guide E105 can provide
guidance on constructing a sampling plan with the representative sample size can be determined per Practice E122.
7. Procedure
7.1 Heat an adequate amount of sample(s) at 400 6 15°C15 °C for not less than 3 h. Normally, this treatment can take place in
air; however, in the case of materials that might react with air at elevated temperatures (such as, prereduced catalysts) the heat
treatment shall take place in an inert atmosphere. After heating, cool the test sample(s) in a desiccator or other suitable container
to eliminate the possibility of moisture adsorption prior to te
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