ASTM D4180-03

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Designation:D4180–03
Standard Test Method for
Vibratory Packing Density of Formed Catalyst Particles and
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Catalyst Carriers
This standard is issued under the fixed designation D 4180; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the determination of the vibra-
tory packing density of formed catalyst and catalyst carriers.
For the purpose of this test, catalyst particles are defined as
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extrudates, spheres, or formed pellets of 0.8 to 4.8-mm ( ⁄32 to
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⁄16-in.) nominal diameter.
1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
only.
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 appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2. Referenced Documents
FIG. 1 Feed Funnel
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2.1 ASTM Standards:
D 3766 Terminology Relating to Catalysts and Catalysis 5. Significance and Use
E 177 Practice for Use of the Terms Precision and Bias in
5.1 This test method is to be used for measuring the
ASTM Test Methods
vibratory packing density of formed particles that will not
E 456 Terminology Relating to Quality and Statistics
break up during sampling, filling, or vibrating of the measuring
E 691 Practice for Conducting an Interlaboratory Study to
cylinder under test conditions.
Determine the Precision of a Test Method
6. Apparatus
3. Terminology
6.1 Glass Cylinders, capacity 250 mL, feed and measuring.
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3.1 Definitions—See Terminology D 3766.
6.2 Vibrator, conventional hand-held, with hard rubber or
metal impactor.
4. Summary of Test Method
6.3 Feed Funnel, plastic, glass, or metal as shown in Fig. 1.
4.1 A preconditioned sample of formed catalyst or catalyst
6.4 Ring Stand, Vibrator Holder and Clamps as shown in
carrier is vibrated in a cylinder. The vibratory packing density
Figs. 2 and 3.
is determined from a known mass and vibrated volume.
6.5 Desiccator, with a desiccant grade molecular sieve such
as a No. 4A.
6.6 Balance having sensitivity of 0.1 g.
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This test method is under the jurisdiction of ASTM Committee D32 on
6.7 Drying Oven.
Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-
Mechanical Properties.
Current edition approved Oct. 1, 2003. Published October 2003. Originally
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approved in 1988. Last previous edition approved in 1999 as D 4180–99. The sole source of supply of the Wahl Vibrator, Model 4180, 4 in 1, 120-V
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or 60-Hz11-WknowntothecommitteeatthistimeisWahlClipperCorp.,Sterling,IL.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM If you are aware of alternative suppliers, please provide this information to ASTM
Standards volume information, refer to the standard’s Document Summary page on International Headquarters. Your comments will receive careful consideration at a
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the ASTM website. meeting of the responsible technical committee, which you may attend.
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D4180–03
FIG. 2 Assembly of Apparatus
FIG. 3 Vibrator Holder
NOTE 1—These conditions may not be appropriate for all materials.
7. Procedure
NOTE 2—Since many catalyst formulations are strong adsorbents, the
7.1 Heat an adequate sample(s) at 400 6 15°C for not less
use of a No. 4A indicating (cobalt-treated) molecular sieve as a desiccat-
than 3 h. Normally, this treatment can take place in air.
ing medium is suggested. The desiccant should be regenerated at 220 to
However, in the case of materials that might react with air at
260°C as required.
elevated temperatures (such as prereduced catalysts) the heat
treatment should take place in an inert atmosphere. Cool after 7.2 Fill a tared feed-glass cylinder with 250 mL of loosely
heating the test sample(s) in a desiccator or other suitable packed,driedcatalystandweighimmediatelytothenearest0.1
container to eliminate the possibility of moisture adsorption
g.
prior to testing.
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D4180–03
7.3 Turn on the vibrator and carefully add the sample(s) to materialsinfiveseparatelaboratories.PracticeE 691,modified
the measuring cylinder through the feed funnel. for nonuniform data sets, was followed for the data reduction.
7.4 Transfer all the catalyst to the me
...