ASTM D6761-22

Standard Test Method for Determination of the Total Pore Volume of Catalysts and Catalyst Carriers

SIGNIFICANCE AND USE
5.1 This test method provides for the measurement of volume of pores that are in the range of catalytic importance and possibly for adsorption processes. This test method requires the use of mercury in order to perform the measurements.
SCOPE
1.1 This test method covers the determination of the total pore volume of catalysts and catalyst carriers, that is, the volume of pores having pore diameter between approximately 14 µm and 0.4 nm (4 Å).  
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 Warning—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney, and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware that selling mercury or mercury containing products, or both, into your state or country may be prohibited by law.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 8. Warning statements are given in 10.1.4, 10.1.7, and 10.1.11.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Mar-2022
• ICS: 71.040.30 - Chemical reagents
• Technical Committee: D32 - Catalysts
• Drafting Committee: D32.02 - Physical-Mechanical Properties

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D6761 − 22
Standard Test Method for
Determination of the Total Pore Volume of Catalysts and
1
Catalyst Carriers
This standard is issued under the fixed designation D6761; 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 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This test method covers the determination of the total
D3766 Terminology Relating to Catalysts and Catalysis
pore volume of catalysts and catalyst carriers, that is, the
E177 Practice for Use of the Terms Precision and Bias in
volume of pores having pore diameter between approximately
ASTM Test Methods
14 µm and 0.4 nm (4 Å).
E456 Terminology Relating to Quality and Statistics
1.2 Units—The values stated in SI units are to be regarded
E691 Practice for Conducting an Interlaboratory Study to
as standard. No other units of measurement are included in this Determine the Precision of a Test Method
standard.
3. Terminology
1.3 Warning—Mercury has been designated by many regu-
3.1 Definitions:
latory agencies as a hazardous material that can cause central
3.1.1 particle volume—the volume of a particle including
nervous system, kidney, and liver damage. Mercury, or its
pores into which mercury cannot penetrate at ambient pressure
vapor, may be hazardous to health and corrosive to materials.
(smaller than approximately 14 µm diameter pore mouth).
Caution should be taken when handling mercury and mercury
3.1.2 true volume—the volume of a particle, including
containing products. See the applicable product Material
pores, into which helium cannot penetrate (smaller than about
Safety Data Sheet (MSDS) for details and EPA’s website—
approximately 0.4 nm (4 Å) diameter pore mouth).
http://www.epa.gov/mercury/faq.htm—for additional informa-
3.1.3 Other definitions and terms used in this test method
tion. Users should be aware that selling mercury or mercury
are defined in Terminology D3766.
containing products, or both, into your state or country may be
3.2 Symbols for Mercury Intrusion:
prohibited by law.
1.4 This standard does not purport to address all of the
W = mass of sample
safety concerns, if any, associated with its use. It is the
W = mass of sealed empty sample cell
c
responsibility of the user of this standard to establish appro-
W' = mass of sealed sample cell filled with mercury
C
priate safety, health, and environmental practices and deter-
W = mass of sealed sample cell with sample
s
mine the applicability of regulatory limitations prior to use.
W' = mass of sealed sample cell with sample filled with
S
Specific hazard statements are given in Section 8. Warning
mercury
C
statements are given in 10.1.4, 10.1.7, and 10.1.11.
V = volume of mercury in empty sample cell (volume of
Hg
sample cell)
1.5 This international standard was developed in accor-
S
V = volume of mercury in cell with sample
Hg
dance with internationally recognized principles on standard-
3
Hg
V = sample volume, cm
S
ization established in the Decision on Principles for the
V = specific sample volume
Hg
Development of International Standards, Guides and Recom-
V = particle volume
P
mendations issued by the World Trade Organization Technical
W = weight mercury reservoir after filling burette with
b
Barriers to Trade (TBT) Committee.
sample
W = mass of mercury reservoir after filling burette with-
b'
out sample
1
This test method is under the jurisdiction of ASTM Committee D32 on
Catalysts and is the direct responsibility of Subcommittee D32.02 on Physical-
2
Mechanical Properties. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved April 1, 2022. Published April 2022. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 2002. Last previous edition approved in 2017 as D6761 – 17. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D6761-22. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D6761 − 22
1

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D6761 − 22
3.3 Symbols for Helium Pycnometry:
3
V = volume of sample cell and associated tubing, cm
C
3
V = reference volume, cm
R
3
He
V = sample volume, cm
S
3
V = volume of calibration cylinder, cm
Cyl
3
V = volume of calibration standard, cm
STD
V = specific sample volume
He
P' = pressure in empty sample cell, psig or pascals
1
P' = pressure in empty sample cell, after the reference
2
volume has been included in the system, psig or
p
...

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.
Designation: D6761 − 17 D6761 − 22
Standard Test Method for
Determination of the Total Pore Volume of Catalysts and
1
Catalyst Carriers
This standard is issued under the fixed designation D6761; 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
1.1 This test method covers the determination of the total pore volume of catalysts and catalyst carriers, that is, the volume of pores
having pore diameter between approximately 14 μm and 0.4 nm (4 ).
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this
standard.
1.3 Warning—Mercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous
system, kidney, and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should
be taken when handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS)
for details and EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware that
selling mercury or mercury containing products, or both, into your state or country may be prohibited by law.WARNING—
Mercury has been designated by many regulatory agencies as a hazardous material that can cause central nervous system, kidney
and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when
handling mercury and mercury containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and
EPA’s website—http://www.epa.gov/mercury/faq.htm—for additional information. Users should be aware that selling mercury
and/or mercury containing products into your state or country may be prohibited by law.
1.4 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use. Specific hazard statements are given in Section 8. Warning statements are given in 9.1.410.1.4,
9.1.710.1.7, and 9.1.1110.1.11.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D3766 Terminology Relating to Catalysts and Catalysis
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
1
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 Oct. 1, 2017April 1, 2022. Published October 2017April 2022. Originally approved in 2002. Last previous edition approved in 20122017 as
D6761–07(2012).D6761 – 17. DOI: 10.1520/D6761-17.10.1520/D6761-22.
2
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
1

---------------------- Page: 1 ----------------------
D6761 − 22
E456 Terminology Relating to Quality and Statistics
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions:
3.1.1 particle volume—the volume of a particle including pores into which mercury cannot penetrate at ambient pressure (smaller
than approximately 14 μm diameter pore mouth).
3.1.2 true volume—the volume of a particle, including pores, into which helium cannot penetrate (smaller than about
approximately 0.4 nm (4 ) diameter pore mouth).
3.1.3 Other definitions and terms used in this test method are defined in Terminology D3766.
3.2 Symbols for Mercury Intrusion:
W = mass of sample
W = mass of sealed empty sample cell
c
W' = mass of sealed sample cell filled with mercury
C
W
...