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ASTM D5357-98

Historical Revision

Standard Test Method for Determination of Relative Crystallinity of Zeolite Sodium A by X-Ray Diffraction

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1.1 This test method covers a procedure for determining the relative crystallinity of zeolite sodium A (zeolite NaA) using selected peaks from the X-ray diffraction pattern of the zeolite.

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

1.3 This test 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 NaA. The intensity ratio, expressed as a percentage, is then labeled "% XRD intensity/NaA."

1.4 This standard does not purport to address all of the safety problems, 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.


SDO ASTM: ASTM International
Document Number D5357
Publication Date March 10, 1998
Language en - English
Page Count 3
Revision Level 98
Supercedes
Committee D32.05
Publish Date Document Id Type View
April 1, 2019 D5357-19 Revision
March 10, 2003 D5357-03 Revision
March 10, 1998 D5357-98 Revision
Dec. 1, 2013 D5357-03R13 Reaffirmation
April 1, 2008 D5357-03R08E01 Reaffirmation