• 标准号：ASTM D5758-2001(2007)e1
• 发布日期：2001
• 英文题名：Standard Test Method for Determination of Relative Crystallinity of Zeolite ZSM-5 by X-Ray Diffraction
• 英文主题词：crystallinity ; X-ray diffraction ; zeolite ZSM-
• 标准状态：现行
• 发布单位：US-ASTM
• 国际标准分类号：71.040.50 (Physicochemical methods of analysis)
• 载体形态：4P.;A4
• 中国标准分类号：D04
• 国别：美国材料与试验协会

1.1 This test method covers a procedure for determination of the relative crystallinity of zeolite ZSM-5 using selected peaks from the X-ray diffraction pattern of the zeolite.

1.2 The test method provides a number that is the ratio of intensity of a portion of the XRD pattern of the sample ZSM-5 to intensity of the corresponding portion of the pattern of a reference ZSM-5. The intensity ratio, expressed as a percentage, is then labeled percent XRD relative crystallinity/ZSM-5. This type of comparison is commonly used in zeolite technology and is often referred to as percent crystallinity.

1.3 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.