ASTM International

Standard Test Method for Determination of the Unit Cell Dimension of a Faujasite-Type Zeolite
 N D3942

Annotation

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).

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.

Автоматический перевод:

Метод стандартной пробы для определения измерения элементарной ячейки цеолита типа фоязита

Этот метод испытаний покрывает определение измерения элементарной ячейки цеолитов, имеющих кристаллическую структуру фоязита, включая синтетический продукт Y и X цеолитов, их модификации, такие как различный катионный обмен формируется, и dealuminized, decationated, и крайние устойчивые формы Y. Эти цеолиты имеют кубическую симметрию с параметром элементарной ячейки обычно в рамках 24.2 и 25.0 (2.42 и 2.50 нм).