ASTM C1251-95

Standard Guide for Determination of Specific Surface Area of Advanced Ceramic Materials by Gas Adsorption (Withdrawn 2000)

SCOPE
1.1 This guide is intended to direct interested investigators to existing ASTM Test Methods that may be useful for determination of surface area of advanced ceramic materials.  
1.2 This guide is not intended to endorse any particular test method or methods; nor does it intend to include all existing test methods that may be applicable. It shall be the option of the investigator to judge whether or not one or more of the listed test methods is appropriate for use with the materials of interest.  
1.3 All numerical values shall be stated in terms of SI units and shall be considered as standard unless specific instrumentation software reports surface area using alternate units. In this case, both reported and equivalent SI units shall be presented in the final written report. Many instruments report surface area as square metres per gram, instead of using the correct SI units square metre per kilogram.  
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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-1994
• Withdrawal Date: 09-Oct-2000
• ICS: 91.100.25 - Terracotta building products
• Technical Committee: C28 - Advanced Ceramics

Standards Content (Sample)

Designation: C 1251 – 95
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Guide for
Determination of Specific Surface Area of Advanced
1
Ceramic Materials by Gas Adsorption
This standard is issued under the fixed designation C 1251; 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.
3
1. Scope Multipoint BET Nitrogen Adsorption
D 1993 Test Method for Precipitated Silica-Surface Area by
1.1 This guide is intended to direct interested investigators
3
Multipoint BET Nitrogen Adsorption
to existing ASTM Test Methods that may be useful for
determination of surface area of advanced ceramic materials.
3. Terminology
1.2 This guide is not intended to endorse any particular test
3.1 Definitions:
method or methods; nor does it intend to include all existing
3.1.1 guide, n—a series of options or instructions that do not
test methods that may be applicable. It shall be the option of
recommend a specific course of action.
the investigator to judge whether or not one or more of the
3.1.2 surface area, n—the total area of the surface of a
listed test methods is appropriate for use with the materials of
powder or solid including both external and accessible internal
interest.
surfaces (from voids, cracks, open porosity, and fissures).
1.3 All numerical values shall be stated in terms of SI units
3.1.2.1 Discussion—The area may be calculated by the BET
and shall be considered as standard unless specific instrumen-
(Brunauer, Emmett, and Teller) equation from gas adsorption
tation software reports surface area using alternate units. In this
data obtained under specific conditions. It is useful to express
case, both reported and equivalent SI units shall be presented in
this value as the specific surface area, for example, surface area
the final written report. Many instruments report surface area
2
per unit weight of sample (m /g).
as square metres per gram, instead of using the correct SI units
3.1.3 surface area (BET), n—the total surface area of a solid
square metre per kilogram.
calculated by the BET equation, from nitrogen adsorption or
1.4 This standard does not purport to address all of the
desorption data obtained under specific conditions.
safety concerns, if any, associated with its use. It is the
3.1.4 surface area, specific, n—the area, per unit mass of a
responsibility of the user of this standard to establish appro-
granular or powdered or formed porous solid, of all external
priate safety and health practices and determine the applica-
plus internal surfaces that are accessible to a penetrating gas or
bility of regulatory limitations prior to use.
liquid.
2. Referenced Documents 3.1.5 Consult definitions in the referenced documents.
2.1 ASTM Standards:
4. Summary of Referenced Test Methods
C 1069 Test Method for Specific Surface Area of Alumina
2 4.1 Test Method C 1069, for Specific Surface Area of Alu-
or Quartz by Nitrogen Adsorption
mina or Quartz by Nitrogen Adsorption—This test method
D 3037 Test Methods for Carbon Black—Surface Area by
3 pertains to the determination of multipoint and single-point
Nitrogen Adsorption
4 specific surface area of aluminas and silicas used in the
D 3663 Test Method for Surface Area of Catalysts
manufacture of ceramics. This test method is under the
D 4365 Test Method for Determining Zeolite Area of a
4 jurisdiction of ASTM Committee C-21 on Ceramic Whitew-
Catalyst
ares and Related Products and is the direct responsibility of
D 4567 Test Method for Single-Point Determination of
SubcommitteeC 21.07 on Nonplastics.
Specific Surface Area of Catalysts Using Nitrogen Adsorp-
4 4.2 Test Methods D 3037, for Carbon Black—Surface Area
tion by Continuous Flow Method
by Nitrogen Adsorption—These test methods pertain to the
D 4820 Test Methods for Carbon Black—Surface Area by
determination of the single-point specific surface area of
carbon blacks. These test methods are under the jurisdiction of
1
This guide is under the jurisdiction of ASTM Committee C-28 on Advanced
ASTM Committee D-24 on Carbon Blacks and are the direct
Ceramics and is the direct responsibility of Subcommittee C28.05 on Processing and
responsibility of Subcommittee D 24.21 on Adsorptive Prop-
Characterization.
Current edition approved March 15, 1995. Published May 1995. Originally erties of Carbon Black.
published as C 1251 – 93. Last previous edition C 1251 – 93.
4.3 Test Method D 3663, for Surface Area of Catalysts—
2
Annual Book of ASTM Standards, Vol 15.02.
This test method pertains to the determination of multipoint
3
Annual Book of ASTM Standards, Vol 09.01.
4
specific surface area of catalysts that exhibit Type II and Type
Annual Book of ASTM Standards, Vol 05.03.
...