UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

ASTM International - ASTM D3906-03

Standard Test Method for Determination of Relative X-ray Diffraction Intensities of Faujasite-Type Zeolite-Containing Materials

inactive
Buy Now
Organization: ASTM International
Publication Date: 10 March 2003
Status: inactive
Page Count: 6
ICS Code (Inorganic chemicals in general): 71.060.01
significance And Use:

Zeolites Y and X, particularly for catalyst and adsorbent applications, are a major article of manufacture and commerce. Catalysts and adsorbents comprising these zeolites in various forms plus... View More

scope:

1.1 This test method covers determining relative zeolite diffraction intensities.

1.2 The term "zeolite" here is restricted to those zeolites having the faujasite crystal structure, including X and Y zeolites, the various cation exchange forms, and the dealuminized, decationated, and ultrastable forms. These zeolites have cubic symmetry with unit cell parameter within the limits 24.2 and 25.0 A (2.42 and 2.50 nm). The samples contemplated include zeolite preparations in the various forms and catalysts containing these zeolites.

1.3 The term "intensity of an X-ray powder diffraction (XRD) peak" is the "integral intensity," either the area of counts under the peak or the product of the peak height and the peak width.

1.4 The method provides a number that is the ratio of intensity of portions of the XRD pattern of the sample to intensity of the corresponding portion of the pattern of a reference zeolite, NaY. (Laboratories may use other zeolite, for example, REY as a secondary standard.) The intensity ratio, expressed as a percentage, is then labeled "% XRD intensity/NaY."

1.5 Under certain conditions such a ratio is the percent zeolite in the sample. These conditions include:

1.5.1 The zeolite in the sample is the same as the reference zeolite.

1.5.2 The absorption for the X-rays used is the same for the zeolite and the nonzeolite portions of the sample.

1.6 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.

Document History

April 1, 2019
Standard Test Method for Determination of Relative X-ray Diffraction Intensities of Faujasite-Type Zeolite-Containing Materials
1.1 This test method covers the determination of relative X-ray diffraction intensities of zeolites having the faujasite crystal structure, including synthetic Y and X zeolites, their modifications...
December 1, 2013
Standard Test Method for Determination of Relative X-ray Diffraction Intensities of Faujasite-Type Zeolite-Containing Materials
4.1 Zeolites Y and X, particularly for catalyst and adsorbent applications, are a major article of manufacture and commerce. Catalysts and adsorbents comprising these zeolites in various forms plus...
April 1, 2008
Standard Test Method for Determination of Relative X-ray Diffraction Intensities of Faujasite-Type Zeolite-Containing Materials
1.1 This test method covers the determination of relative X-ray diffraction intensities of zeolites having the faujasite crystal structure, including synthetic Y and X zeolites, their modifications...
ASTM D3906-03
March 10, 2003
Standard Test Method for Determination of Relative X-ray Diffraction Intensities of Faujasite-Type Zeolite-Containing Materials
Zeolites Y and X, particularly for catalyst and adsorbent applications, are a major article of manufacture and commerce. Catalysts and adsorbents comprising these zeolites in various forms plus...
January 1, 1997
Standard Test Method for Determination of Relative X-ray Diffraction Intensities of Faujasite-Type Zeolite-Containing Materials
1.1 This test method covers determining relative zeolite diffraction intensities. 1.2 The term "zeolite" here is restricted to those zeolites having the faujasite crystal structure, including X and...
Advertisement