ISO/TS 23362:2021
Nanotechnologies — Nanostructured porous alumina as catalyst support for vehicle exhaust emission control — Specification of characteristics and measurement methods
This document specifies characteristics to be measured of nanostructured porous alumina in powder form as catalyst support for vehicle exhaust emission control and their relevant measurement methods. It includes critical characteristics that are required to be measured and additional characteristics that are recommended to be measured, based upon agreement between the interested parties. Measurement methods for each characteristic are recommended.
This document is applicable to nanostructured porous alumina for gasoline-powered cars. It does not apply to characteristics specific for health, the environment and safety issues.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Characteristics and their measurement methods
4.1 General
4.2 Critical characteristics and their measurement methods
4.3 Additional characteristics and their measurement methods
5 Descriptions of characteristics and measurement methods
5.1 General
5.2 Specific surface area
5.3 Specific pore volume
5.4 Pore diameter
5.5 Impurity content
5.6 Apparent density
5.7 Tap density
5.8 Particle size
5.9 Loss on ignition
6 Reporting
Annex A (informative) Schematic illustration of three-way catalytic converter
Annex B (informative) Example of reporting table format
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Characteristics and their measurement methods
4.1 General
4.2 Critical characteristics and their measurement methods
4.3 Additional characteristics and their measurement methods
5 Descriptions of characteristics and measurement methods
5.1 General
5.2 Specific surface area
5.3 Specific pore volume
5.4 Pore diameter
5.5 Impurity content
5.6 Apparent density
5.7 Tap density
5.8 Particle size
5.9 Loss on ignition
6 Reporting
Annex A (informative) Schematic illustration of three-way catalytic converter
Annex B (informative) Example of reporting table format
Bibliography