ASTM D4512-03
(Test Method)Standard Test Method for Vibrated Apparent Packing Density of Fine Catalyst and Catalyst Carrier Particles and Powder
Standard Test Method for Vibrated Apparent Packing Density of Fine Catalyst and Catalyst Carrier Particles and Powder
SIGNIFICANCE AND USE
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.
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 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D4512–03
Standard Test Method for
Vibrated Apparent Packing Density of Fine Catalyst and
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Catalyst Carrier Particles and Powder
This standard is issued under the fixed designation D 4512; 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 appar-
entpackingdensityoffinecatalystandcatalystcarrierpowders
smaller than 0.8 mm in 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
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2.1 ASTM Standards:
D 3766 Terminology Relating to Catalysts and Catalysis
FIG. 1 Feed Funnel
E 177 Practice for Use of the Terms Precision and Bias in
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5.2 Vibrator, conventional hand-held, with hard rubber or
ASTM Test Methods
metal impactor.
E 456 Terminology Relating to Quality and Statistics
5.3 Feed Funnel, plastic, glass, or metal as shown in Fig. 1.
E 691 Practice for Conducting an Interlaboratory Study to
5.4 Ring Stand, vibrator holder and clamps as shown in
Determine the Precision of a Test Method
Figs. 2 and 3.
3. Terminology
5.5 Desiccator, with a desiccant grade molecular sieve such
3.1 Definitions—See Terminology D 3766. as 4A.
5.6 Balance, having sensitivity of 0.1 g.
4. Significance and Use
5.7 Drying Oven.
4.1 This test method is for measuring the apparent packing
6. Procedure
density of catalyst or catalyst carrier powders that are smaller
than 0.8 mm in diameter. 6.1 Heat an adequate amount of sample(s) at 400 6 15°C
for not less than 3 h. Normally, this treatment can take place in
5. Apparatus
air; however, in the case of materials that might react with air
5.1 Glass Cylinders, capacity 100 mL, feed and measuring. 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
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This test method is under the jurisdiction of ASTM Committee D32 on
container to eliminate the possibility of moisture adsorption
Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-
prior to testing.
Mechanical Properties.
Current edition approved Oct. 1, 2003. Published October 2003. Originally
approved in 1985. Last previous edition approved in 1999 as D 4512–99.
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tional Headquarters.Your comments will receive careful consideration at a meeting
the ASTM website.
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D4512–03
FIG. 2 Assembly of Apparatus
FIG. 3 Vibrator Holder
NOTE 1—These conditions may not be appropriate for all materials.
6.4 Transfer all of the sample to the measuring cylinder at a
NOTE 2—Since many catalyst formulations are strong adsorbents, the
uniform rate not less than 2 mL or exceeding 3 mL/s. The
use of 4A indicating (cobalt-treated) molecular sieve as a desiccating
entire transfer time shall be between 35 and 50 s.
medium is suggested. The desiccant should be regenerated at 493 K
6.5 After 60 additional seconds turn off the vibrator. Read
(220°C) to 533 K (260°C), as required.
the vibrated volume, V, to the nearest millilitre by estimating
6.2 Fillafeedglasscylinderwith100mLoflooselypacked,
the average level of the sample surface in the cylinder.
dried sample.
Immediatelyweighthesampleandcylindertothenearesttenth
6.3 Turn on the vibrator and carefully add sample(s) to the
of a gram.
tared, measuring cylinder through the feed funnel.
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D4512–03
7. Calculation materials in four separate laboratories. Practice E 691, modi-
fied for nonuniform data sets, was followed for the data
7.1 Calculate th
...
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