ASTM D4058-96(2011)e1

Standard Test Method for Attrition and Abrasion of Catalysts and Catalyst Carriers

SIGNIFICANCE AND USE
This test method is considered to be a measure of the propensity of a catalyst to produce fines in the course of transportation, handling, and use. However, there is no absolute level of acceptability. The values obtained are significant principally in relation to values for other materials (or other samples of the same material) of comparable size.
SCOPE
1.1 This test method covers the determination of the attrition and abrasion resistance of catalysts and catalyst carriers. It is applicable to tablets, extrudate, spheres, and irregularly shaped particles larger than about 1/16 in. (1.6 mm) and smaller than about 3/4 in. (19 mm). The materials used in developing the method exhibited losses on attrition less than 7 %; however, the method should be applicable to materials giving much higher attritions.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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.

General Information

• Status: Historical
• Publication Date: 31-Jul-2011
• ICS: 71.040.30 - Chemical reagents
• Technical Committee: D32 - Catalysts
• Drafting Committee: D32.02 - Physical-Mechanical Properties

Relations

• Replaces: ASTM D4058-96(2006) - Standard Test Method for Attrition and Abrasion of Catalysts and Catalyst Carriers
• Effective Date: 01-Aug-2011
• Replaced By: ASTM D4058-96(2015) - Standard Test Method for Attrition and Abrasion of Catalysts and Catalyst Carriers
• Effective Date: 01-Dec-2015
• Referred By: ASTM D8353-20 - Standard Guide for Determination of Individual Particle Strength of Low Surface Area Catalysts and Catalyst Carriers by Drop Test onto a Steel Plate
• Effective Date: 01-Aug-2011

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
´1
Designation: D4058 − 96(Reapproved 2011)
Standard Test Method for
Attrition and Abrasion of Catalysts and Catalyst Carriers
This standard is issued under the fixed designation D4058; 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.
ε NOTE—Updated text in 3.1 editorially in August 2011.
1. Scope 4. Significance and Use
1.1 This test method covers the determination of the attri- 4.1 This test method is considered to be a measure of the
propensity of a catalyst to produce fines in the course of
tion and abrasion resistance of catalysts and catalyst carriers. It
is applicable to tablets, extrudate, spheres, and irregularly transportation, handling, and use. However, there is no abso-
lute level of acceptability. The values obtained are significant
shaped particles larger than about ⁄16 in. (1.6 mm) and smaller
than about ⁄4 in. (19 mm). The materials used in developing principally in relation to values for other materials (or other
samples of the same material) of comparable size.
the method exhibited losses on attrition less than 7 %;
however, the method should be applicable to materials giving
5. Apparatus
much higher attritions.
5.1 Acylindricaldrumwithinsidedimensionsof10in.(254
1.2 The values stated in inch-pound units are to be regarded
mm) diameter and 6 in. (152 mm) long with a single radial
as standard. The values given in parentheses are mathematical
baffle 2 in. (51 mm) high extending the full length of the
conversions to SI units that are provided for information only
cylinder. A lid shall be provided and secured to the container
and are not considered standard.
withAllen-headscrews,wingnutsorothersuitablemeansasto
1.3 This standard does not purport to address all of the
ensure that no fines escape during the test. The inside of the
safety concerns, if any, associated with its use. It is the
drum should have a surface roughness no greater than about
responsibility of the user of this standard to establish appro-
250 µin. (6.4 µm). (The roughness of cold-rolled steel or a
priate safety and health practices and determine the applica-
smooth grind on a lathe is satisfactory.) A suitable design is
bility of regulatory limitations prior to use.
shown in Fig. 1.
5.2 Any convenient means of rotation, such as a ball mill
2. Referenced Documents
roller, geared to give the desired rate of rotation of the drum.
2.1 ASTM Standards:
6. Sampling
E177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods
6.1 Obtain a representative sample of about 110 g of the
E456 Terminology Relating to Quality and Statistics
material to be tested by gently splitting or quartering. Any
E691 Practice for Conducting an Interlaboratory Study to
sampling technique requiring extensive agitation or handling
Determine the Precision of a Test Method
willcausesomeattritionand,therefore,compromisetheresults
of the test.
3. Summary of Test Method
6.2 Gently sieve the sample on a No. 20 (850-µm) ASTM
3.1 A sample of catalyst or catalyst carrier is rotated for a
sieve.
fixed number of revolutions in a cylindrical drum having a
6.3 Transfer the presieved sample to a widemouthed con-
single baffle. Fines produced by attrition and abrasion in the
tainer tared to the nearest 0.01 g.
test are determined by sieving through a standard sieve.
6.4 Dry the presieved sample in air for3hat 400°C. It may
be necessary to modify or eliminate this step when testing
This test method is under the jurisdiction of ASTM Committee D32 on
materials that might be decomposed or drastically altered by
Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-
Mechanical Properties.
the drying conditions.
Current edition approved Aug. 1, 2011. Published August 2011. Originally
NOTE 1—For example, an activated carbon catalyst may be treated for
approved in 1981. Last previous edition approved in 2006 as D4058–96(2006).
4 h at 190°C in a vacuum oven.
DOI: 10.1520/D4058-96R11E01.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.5 Cool the dried sample for at least 30 min in a desiccator
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
using freshly regenerated 4Amolecular sieves as the desiccant.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. The
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