ASTM D4513-97

Standard Test Method for Particle Size Distribution of Catalytic Materials by Sieving

SCOPE
1.1 This test method covers the determination of particle size distribution of catalytic powder material using a sieving instrument and is one of several found valuable for the measurement of particle size. This test method is particularly suitable for particles in the 20 to 420-μm range.
1.2  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.

General Information

• Status: Historical
• Publication Date: 09-Mar-1997
• Technical Committee: D32 - Catalysts
• Drafting Committee: D32.02 - Physical-Mechanical Properties

Relations

• Replaced By: ASTM D4513-97(2001)e1 - Standard Test Method for Particle Size Distribution of Catalytic Materials by Sieving
• Effective Date: 10-Mar-1997

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: D 4513 – 97
Standard Test Method for
Particle Size Distribution of Catalytic Materials by Sieving
This standard is issued under the fixed designation D 4513; 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 5. Apparatus
1.1 This test method covers the determination of particle 5.1 Laboratory Sieving Instrument.
size distribution of catalytic powder material using a sieving 5.2 U. S. Standard Sieves or equivalent, to include mi-
instrument and is one of several found valuable for the crometers (mesh) 420(40), 250(60), 177(80), 149(100),
measurement of particle size. This test method is particularly 105(140), 74(200), 44(325) and electroformed 30 and 20
suitable for particles in the 20 to 420-μm range. micrometers. Because of their superior uniformity and resis-
1.2 This standard does not purport to address all of the tance to distortion or damage during use, electroformed sieves,
safety concerns, if any, associated with its use. It is the preferably with square holes, are recommended. Sieves with
responsibility of the user of this standard to establish appro- diameters between 6 and 10 cm are suggested.
priate safety and health practices and determine the applica- 5.3 Ultrasonic Cleaning Tank, 100 W.
bility of regulatory limitations prior to use. 5.4 Transmitted Light Microscope, 300 magnification, with
calibrated scale eyepiece.
2. Referenced Documents
5.5 Heat Gun Dryer (hair dryer or equivalent).
2.1 ASTM Standards:
5.6 Analytical Balance, capable of weighing to 0.001 g.
E 11 Specification for Wire-Cloth Sieves for Testing Pur- 5.7 Sample Splitter, Chute Type, or Spinning Riffler, with
poses
spinning riffler preferred.
E 161 Specification for Precision Electroformed Sieves
2 6. Reagents
(Square Opening Series)
E 177 Practice for Use of the Terms Precision and Bias in 6.1 Antistatic Coating (record cleaning spray or equiva-
ASTM Test Methods lent.)
E 456 Terminology Relating to Quality and Statistics 6.2 Alcohol-Water Solution—One part ethanol to nine parts
deionized or distilled water.
3. Summary of Test Method
7. Sampling
3.1 A 50 % relative humidity-equilibrated sample of known
weight is allowed to fractionate on a series of various size 7.1 The sample must be free-flowing and homogeneous. If
sieves to allow the various particle sizes to be collected on particle size segregation is apparent to either the eye or from
successively smaller sieve openings. observation under a microscope, remix and resample the
3.2 The sample fraction collected on each sieve of the series material using the proper riffling procedure.
is weighed and its fractional part of the original sample is 7.2 Equilibrate the sample at 20 to 25°C (68 to 77°F) in a
determined. desiccator with a humidity level of 50 %. A 24-h period is
usually sufficient.
4. Significance and Use
8. Calibration and Standardization
4.1 This test method can be used to determine particle size
distributions of catalysts and supports for materials specifica- 8.1 Prior to use, check all sieves for damage or improper
tions, manufacturing control, and research and development cleaning. If woven-wire sieves are used rather than the pre-
work. ferred electroformed sieves, it is especially important to
carefully inspect the wire surface for wear, misalignment, tears,
creases, or separation along the edges.
NOTE 1—Specifications for wire cloth sieves are described in Specifi-
This test method is under the jurisdiction of ASTM Committee D-32 on
cation E 11 and specifications for electroformed sieves are described in
Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-
Specification E 161.
Mechanical Properties.
Current edition approved March 10, 1997. Published October 1997. Originally
published as B 4513 – 85. Last previous edition B 4513 – 96.
Annual Book of ASTM Standards, Vol 14.02.
ATM Sonic Sifter, Model L3P, or equivalent.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D 4513
9. Procedure 100 %. See Table 1 for an example of the calculations and
presentation.
9.1 Select appropriate sieves for the sample being analyzed,
10.2 Median Particle Size—The median particle size may
typically the 149, 105, 74, 44, and 20-μm sieves.
be determined by plotting the cumulative percentage data
NOTE 2—For optimum results, the estimated particle size should be
against the mesh size and determining the size corresponding
determined by microscopic examination at 100–300X. Sieves may then be
to 50 %.
selected to cover the size range of the particles.
11. Precision and Bias (Note 5)
9.2 Clean 44 and 20-μm sieves prior to use in an ultrasonic
bath using a 10 % ethanol, 90 % water mixture. Dry the sieves 11.1 Agreement among individual measurements was deter-
mined using an equilibrium fluid cracking catalyst. Experimen-
in a low temperature air jet (hair dryer or equivalent) and allow
to equilibrate at room temperature for 30 min before obtaining tal repeatability was measured for a number of analyses in each
of five laboratories. Experimental reproducibility was deter-
the tare weights.
mined by comparison of results from all seven of the labora-
9.3 Tare each sieve and the fines coll
...