ASTM D3942-97
Historical Standard: ASTM D3942-97 Standard Test Method for Determination of the Unit Cell Dimension of a Faujasite-Type Zeolite
SUPERSEDED (see Active link, below)
ASTM D3942
1. Scope
1.1 This test method covers the determination of the unit cell dimension of zeolites having the faujasite crystal structure, including synthetic Y and X zeolites, their modifications such as the various cation exchange forms, and the dealuminized, decationated, and ultra stable forms of Y . These zeolites have cubic symmetry with a unit cell parameter usually within the limits of 24.2 and 25.0 (2.42 and 2.50 nm).
1.2 The samples include zeolite preparation in the various forms, and catalysts and adsorbents containing these zeolites. The zeolite may be present in amounts as low as 5 %, such as in a cracking catalyst.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
Keywords
atalyst; faujasite; unit cell; X-ray diffraction; zeolite; Faujasite crystal zeolites; Unit cell dimension; X-ray diffraction analysis; Zeolite catalysts;
ICS Code
ICS Number Code 71.100.40 (Surface active agents)
DOI: 10.1520/D3942-97
ASTM International is a member of CrossRef.
