ASTM D5187-10(2015)e1 PDF

Scope: 5.1 The crystallinity of petroleum coke, as reflected by the L_c value, is a general measure of quality affecting suitability for end use and is a function of the heat treatment.

5.2 The crystallite thickness is used to determine the extent of such heat treatment, for example, during calcination. The value of the L_c determined is not affected by coke microporosity or the presence of foreign, non-crystalline materials such as dedust oil.

1.1 This test method covers the determination of the mean crystallite thickness of a representative, pulverized sample of calcined petroleum coke by interpretation of a X-ray diffraction pattern produced through conventional X-ray scanning techniques.

1.2 Calcined petroleum coke contains crystallites of different thicknesses. This test method covers the determination of the average thickness of all crystallites in the sample by empirical interpretation of the X-ray diffraction pattern. The crystallite diameter (L_a) is not determined by this test method.

1.3 The values stated in SI (metric) units are to be regarded as the standard. The inch-pound units given in parentheses are provided for information purposes only.

1.4 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.

ASTM D5187-10(2015)e1 Referenced Document

ASTM D2013 Standard Method of Preparing Coal Samples for Analysis
ASTM D2234/D2234M Standard Practice for Collection of a Gross Sample of Coal
ASTM D346 Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

2021 ASTM D5187-21 Standard Test Method for Determination of Crystallite Size (Lc) of Calcined Petroleum Coke by X-Ray Diffraction
2010 ASTM D5187-10(2015)e1 Standard Test Method for Determination of Crystallite Size (Lc) of Calcined Petroleum Coke by X-Ray Diffraction
2010 ASTM D5187-10 Standard Test Method for Determination of Crystallite Size (Lc of Calcined Petroleum Coke by X-Ray Diffraction
1991 ASTM D5187-91(2007) Standard Test Method for Determination of Crystallite Size (Lc of Calcined Petroleum Coke by X-Ray Diffraction
1991 ASTM D5187-91(2002) Standard Test Method for Determination of Crystallite Size (L_c) of Calcined Petroleum Coke by X-Ray Diffraction
1991 ASTM D5187-91(1997) Standard Test Method for Determination of Crystallite Size (L_c) of Calcined Petroleum Coke by X-Ray Diffraction

$Standard Test Method for Determination of Crystallite Size (L<inf>c</inf>) of Calcined Petroleum Coke by X-Ray Diffraction$