ASTM D4512-03(2013)
(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
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.
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 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 and health practices and determine the applicability of regulatory limitations prior to use.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D4512 − 03(Reapproved 2013)
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.
1. Scope 5.2 Vibrator, conventional hand-held, with hard rubber or
metal impactor.
1.1 This test method covers the determination of the appar-
entpackingdensityoffinecatalystandcatalystcarrierpowders 5.3 Feed Funnel, plastic, glass, or metal as shown in Fig. 1.
smaller than 0.8 mm in diameter.
5.4 Ring Stand, vibrator holder and clamps as shown in
1.2 The values stated in SI units are to be regarded as Figs. 2 and 3.
standard. No other units of measurement are included in this
5.5 Desiccator, with a desiccant grade molecular sieve such
standard.
as 4A.
1.3 This standard does not purport to address all of the
5.6 Balance, having sensitivity of 0.1 g.
safety concerns, if any, associated with its use. It is the
5.7 Drying Oven.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
6. Procedure
bility of regulatory limitations prior to use.
6.1 Heat an adequate amount of sample(s) at 400 6 15°C
2. Referenced Documents
for not less than 3 h. Normally, this treatment can take place in
2.1 ASTM Standards:
air; however, in the case of materials that might react with air
D3766 Terminology Relating to Catalysts and Catalysis
at elevated temperatures (such as, prereduced catalysts) the
E177 Practice for Use of the Terms Precision and Bias in
heat treatment shall take place in an inert atmosphere. After
ASTM Test Methods
heating, cool the test sample(s) in a desiccator or other suitable
E456 Terminology Relating to Quality and Statistics
container to eliminate the possibility of moisture adsorption
E691 Practice for Conducting an Interlaboratory Study to
prior to testing.
Determine the Precision of a Test Method
NOTE 1—These conditions may not be appropriate for all materials.
NOTE 2—Since many catalyst formulations are strong adsorbents, the
3. Terminology
use of 4A indicating (cobalt-treated) molecular sieve as a desiccating
3.1 Definitions—See Terminology D3766. medium is suggested. The desiccant should be regenerated at 493 K
(220°C) to 533 K (260°C), as required.
4. Significance and Use
6.2 Fillafeedglasscylinderwith100mLoflooselypacked,
4.1 This test method is for measuring the apparent packing dried sample.
density of catalyst or catalyst carrier powders that are smaller
6.3 Turn on the vibrator and carefully add sample(s) to the
than 0.8 mm in diameter.
tared, measuring cylinder through the feed funnel.
5. Apparatus 6.4 Transfer all of the sample to the measuring cylinder at a
uniform rate not less than 2 mL or exceeding 3 mL/s. The
5.1 Glass Cylinders, capacity 100 mL, feed and measuring.
entire transfer time shall be between 35 and 50 s.
6.5 After 60 additional seconds turn off the vibrator. Read
This test method is under the jurisdiction of ASTM Committee D32 on
the vibrated volume, V, to the nearest millilitre by estimating
Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-
Mechanical Properties.
Current edition approved March 1, 2013. Published March 2013. Originally
approved in 1985. Last previous edition approved in 2008 as D4512–03(2008).
DOI: 10.1520/D4512-03R13. The sole source of supply of the Wahl, Model 4180, 4 in 1, 120 V60 Hz 11 W
For referenced ASTM standards, visit the ASTM website, www.astm.org, or known to the committee at this time is Wa
...
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