ASTM D4824-03
Standard Test Method for Determination of Catalyst Acidity by Ammonia Chemisorption

Standard No.

ASTM D4824-03

Release Date

2003

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D4824-03(2008)

Latest

ASTM D4824-24

Scope

This test method can be used to determine the acidity of catalysts and catalyst carriers by ammonia chemisorption for materials specifications, manufacturing control, and research and development in the evaluation of catalysts.

1.1 This test method covers the determination of acidity of catalysts and catalyst carriers by ammonia chemisorption. A volumetric measuring system is used to obtain the amount of chemisorbed ammonia.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.

ASTM D4824-03 history

• 2024 ASTM D4824-24 Standard Test Method for Determination of Catalyst Acidity by Ammonia Chemisorption
• 2018 ASTM D4824-13(2018) Standard Test Method for Determination of Catalyst Acidity by Ammonia Chemisorption
• 2013 ASTM D4824-13 Standard Test Method for Determination of Catalyst Acidity by Ammonia Chemisorption
• 2003 ASTM D4824-03(2008) Standard Test Method for Determination of Catalyst Acidity by Ammonia Chemisorption
• 2003 ASTM D4824-03 Standard Test Method for Determination of Catalyst Acidity by Ammonia Chemisorption
• 1999 ASTM D4824-94(1999) Standard Test Method for Determination of Catalyst Acidity by Ammonia Chemisorption