ASTM D4365-13 PDF

Scope: 5.1 This gas adsorption method complements the X-ray procedure of Test Method D3906. This test method will be useful to laboratories that do not have X-ray diffractometers. Each test method can be calibrated by use of an appropriate series of mechanical mixtures to provide what may be termed percent zeolite. If there is disorder in the zeolite, the adsorption method will yield higher values than the X-ray method. The reverse will be true if some zeolite pores (micropores) are blocked or filled.

1.1 This test method covers the determination of total surface area and mesopore area. From these results are calculated the zeolite area and micropore volume of a zeolite containing catalyst. The micropore volume is related to the percent zeolite in the catalyst. The zeolite area, a number related to the surface area within the zeolite pores, may also be calculated. Zeolite area, however, is difficult to intepret in physical terms because of the manner in which nitrogen molecules pack within the zeolite.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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. For a specific precautionary statement, see Note 3.

ASTM D4365-13 Referenced Document

ASTM D3663 Standard Test Method for Surface Area of Catalysts and Catalyst Carriers
ASTM D3906 Standard Test Method for Determination of Relative X-ray Diffraction Intensities of Faujasite-Type Zeolite-Containing Materials
ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM E456 Standard Terminology for Relating to Quality and Statistics
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

2019 ASTM D4365-19 Standard Test Method for Determining Micropore Volume and Zeolite Area of a Catalyst
2013 ASTM D4365-13 Standard Test Method for Determining Micropore Volume and Zeolite Area of a Catalyst
1995 ASTM D4365-95(2008) Standard Test Method for Determining Micropore Volume and Zeolite Area of a Catalyst
1995 ASTM D4365-95(2007)e1 Standard Test Method for Determining Micropore Volume and Zeolite Area of a Catalyst
1995 ASTM D4365-95(2001) Standard Test Method for Determining Micropore Volume and Zeolite Area of a Catalyst
1995 ASTM D4365-95 Standard Test Method for Determining Micropore Volume and Zeolite Area of a Catalyst