ASTM D4058-96(2015)

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

SIGNIFICANCE AND USE
4.1 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: 30-Nov-2015
• ICS: 71.040.30 - Chemical reagents
• Technical Committee: D32 - Catalysts
• Drafting Committee: D32.02 - Physical-Mechanical Properties

Relations

• Replaces: ASTM D4058-96(2011)e1 - Standard Test Method for Attrition and Abrasion of Catalysts and Catalyst Carriers
• Effective Date: 01-Dec-2015
• Replaced By: ASTM D4058-96(2020) - Standard Test Method for Attrition and Abrasion of Catalysts and Catalyst Carriers
• Effective Date: 15-May-2020
• 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-Dec-2015

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: D4058 − 96 (Reapproved 2015)
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.
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
tion and abrasion resistance of catalysts and catalyst carriers. It propensity of a catalyst to produce fines in the course of
is applicable to tablets, extrudate, spheres, and irregularly transportation, handling, and use. However, there is no abso-
shaped particles larger than about ⁄16 in. (1.6 mm) and smaller lute level of acceptability. The values obtained are significant
than about ⁄4 in. (19 mm). The materials used in developing principally in relation to values for other materials (or other
the method exhibited losses on attrition less than 7 %; samples of the same material) of comparable size.
however, the method should be applicable to materials giving
much higher attritions.
5. Apparatus
1.2 The values stated in inch-pound units are to be regarded 5.1 Acylindricaldrumwithinsidedimensionsof10in.(254
as standard. The values given in parentheses are mathematical
mm) diameter and 6 in. (152 mm) long with a single radial
conversions to SI units that are provided for information only baffle 2 in. (51 mm) high extending the full length of the
and are not considered standard.
cylinder. A lid shall be provided and secured to the container
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.
2. Referenced Documents 5.2 Any convenient means of rotation, such as a ball mill
roller, geared to give the desired rate of rotation of the drum.
2.1 ASTM Standards:
E177 Practice for Use of the Terms Precision and Bias in
6. Sampling
ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
6.1 Obtain a representative sample of about 110 g of the
E691 Practice for Conducting an Interlaboratory Study to
material to be tested by gently splitting or quartering. Any
Determine the Precision of a Test Method
sampling technique requiring extensive agitation or handling
willcausesomeattritionand,therefore,compromisetheresults
3. Summary of Test Method
of the test.
3.1 A sample of catalyst or catalyst carrier is rotated for a
6.2 Gently sieve the sample on a No. 20 (850-µm) ASTM
fixed number of revolutions in a cylindrical drum having a sieve.
single baffle. Fines produced by attrition and abrasion in the
6.3 Transfer the presieved sample to a widemouthed con-
test are determined by sieving through a standard sieve.
tainer tared to the nearest 0.01 g.
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-
the drying conditions.
Mechanical Properties.
Current edition approved Dec. 1, 2015. Published December 2015. Originally
NOTE 1—For example, an activated carbon catalyst may be treated for
approvedin1981.Lastpreviouseditionapprovedin2011asD4058–96(2011).DOI:
4 h at 190°C in a vacuum oven.
10.1520/D4058-96R15.
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 molecular sieves shall be regen
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D4058 − 96 (Reapproved 2011) D4058 − 96 (Reapproved 2015)
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
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 ⁄16 in. (1.6 mm) and smaller than about
⁄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.
2. Referenced Documents
2.1 ASTM Standards:
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Summary of Test Method
3.1 A sample of catalyst or catalyst carrier is rotated for a fixed number of revolutions in a cylindrical drum having a single
baffle. Fines produced by attrition and abrasion in the test are determined by sieving through a standard sieve.
4. Significance and Use
4.1 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.
5. Apparatus
5.1 A cylindrical drum with inside dimensions of 10 in. (254 mm) diameter and 6 in. (152 mm) long with a single radial baffle
2 in. (51 mm) high extending the full length of the cylinder. A lid shall be provided and secured to the container with Allen-head
screws, wing nuts or other suitable means as to ensure that no fines escape during the test. The inside of the drum should have
a surface roughness no greater than about 250 μin. (6.4 μm). (The roughness of cold-rolled steel or a smooth grind on a lathe is
satisfactory.) A suitable design is shown in Fig. 1.
5.2 Any convenient means of rotation, such as a ball mill roller, geared to give the desired rate of rotation of the drum.
This test method is under the jurisdiction of ASTM Committee D32 on Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-Mechanical
Properties.
Current edition approved Aug. 1, 2011Dec. 1, 2015. Published August 2011December 2015. Originally approved in 1981. Last previous edition approved in 20062011
as D4058–96(2006).D4058–96(2011). DOI: 10.1520/D4058-96R11E01.10.1520/D4058-96R15.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D4058 − 96 (2015)
FIG. 1 Drum for Determining Attrition and Abrasion (Stainless Steel Fabrication)
6. Sampling
6.1 Obtain a representative sample of about 110 g of the material to be tested by gently splitting or quartering. Any sampling
technique requiring extensive agitation or handling will cause some attrition and, therefore, compromise the results of the test.
6.2 Gently sieve the sample on a No. 20 (850-μm) ASTM sieve.
6.3 Transfer the presieved sample to a widemouthed container tared to
...