ASTM D4164-13(2018)

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.
Designation: D4164 − 13 (Reapproved 2018)
Standard Test Method for
Mechanically Tapped Packing Density of Formed Catalyst
and Catalyst Carriers
This standard is issued under the fixed designation D4164; 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.
1. Scope 4. Summary of Test Method
4.1 A preconditioned sample of formed catalyst or catalyst
1.1 This test method covers the determination of the me-
chanically tapped density of formed catalyst and catalyst carrier is tapped in a graduated cylinder. The mechanically
tappedpackingdensityisdeterminedfromtheknownmassand
carriers. For the purpose of this test method, catalyst particles
are defined as extrudates, spheres, or formed pellets of 0.8 to tapped volume.
1 3
4.8-mm ( ⁄32 to ⁄16-in.) nominal diameter.
5. Significance and Use
1.2 This standard does not purport to address all of the
5.1 This test method is to be used for measuring the
safety concerns, if any, associated with its use. It is the
mechanically tapped packing density of formed particles that
responsibility of the user of this standard to establish appro-
will not break up during sampling, filling, or tapping of the
priate safety, health, and environmental practices and deter-
measuring cylinder under test conditions.
mine the applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accor-
6. Apparatus
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
6.1 Graduated Cylinder, capacity 250 mL, conforming to
Development of International Standards, Guides and Recom-
Specification E1272, Class A, with a base designed to accom-
mendations issued by the World Trade Organization Technical modate the cylinder holder.
Barriers to Trade (TBT) Committee.
6.2 Cylinder Holder, weighing approximately 1 lb (454 g).
6.3 Tapping Device, consisting of a base-plate with worm
2. Referenced Documents
drive, reduction ratio 15:1, nominal cam shaft speed of 250
2.1 ASTM Standards:
r/min, tapping stroke travel ⁄8 in. (3.2 mm).
D3766 Terminology Relating to Catalysts and Catalysis
6.4 Four Digit Adjustable Counter, which can be preset to
E177 Practice for Use of the Terms Precision and Bias in
deliver any number of taps between 1 and 9999.
ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
6.5 Desiccator, with a desiccant grade molecular sieve such
E691 Practice for Conducting an Interlaboratory Study to as No. 4A.
Determine the Precision of a Test Method
6.6 Balance having a sensitivity of 0.1 g.
E1272 Specification for Laboratory Glass Graduated Cylin-
6.7 Drying Oven.
ders
7. Procedure
3. Terminology
7.1 Heat an adequate sample(s) at 400 6 15°C for not less
3.1 Definitions—See Terminology D3766.
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
This test method is under the jurisdiction of ASTM Committee D32 on
treatment should take place in an inert atmosphere. After
Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-
heating, cool the test sample(s) in a desiccator or other suitable
Mechanical Properties.
container to eliminate the possibility of moisture adsorption
Current edition approved May 1, 2018. Published May 2018. Originally
approved in 1988. Last previous edition approved in 2013 as D4164 – 13. DOI: prior to testing.
10.1520/D4164-13R18.
NOTE 1—These conditions may not be appropriate for all materials.
For referenced ASTM stan
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