WK92395 - New Guide for Acid Site Characterization on Zeolites Using a Dynamic Flow Method

Work Item

ASTM WK92395

New Guide for Acid Site Characterization on Zeolites Using a Dynamic Flow Method

1. Scope

This test method provides a measure of relative acidity and acid types on zeolites. The method is most useful as a screening tool to measure relative acid site concentrations on zeolites. It may be extended to other solid-state acidic catalysts provided that the user exercises care in optimizing the pretreatment and measurement conditions for the catalyst being tested.

Keywords

Propylamine; Desorption; Lewis; Bronsted

Rationale

This test method complements standard D4824, which involves catalyst acidity evaluation by dynamic ammonia chemisorption followed by a temperature programmed desorption (TPD). The method shall prove beneficial to users of metal-supported catalysts for research and quality control applications.

Details

Developed by Subcommittee: D32.01

Committee: D32

Staff Manager: Kelly Paul

Work Item Status

Date Initiated: 09-28-2024

Technical Contact: Carlos Leon y Leon

Item: 000

Ballot:

Status:

New Guide for Acid Site Characterization on Zeolites Using a Dynamic Flow Method

1. Scope

Keywords

Rationale

Details

Work Item Status

Related

New Guide for Acid Site Characterization on Zeolites Using a Dynamic Flow Method

1. Scope

Keywords

Rationale

Details

Work Item Status

Related