ASTM D7085-04e1
(Guide)Standard Guide for Determination of Chemical Elements in Fluid Catalytic Cracking Catalysts by X-ray Fluorescence Spectrometry (XRF)
Standard Guide for Determination of Chemical Elements in Fluid Catalytic Cracking Catalysts by X-ray Fluorescence Spectrometry (XRF)
SCOPE
1.1 This guide covers several comparable procedures for the quantitative chemical analysis of up to 29 elements in fluid catalytic cracking (FCC) catalyst by X-ray fluorescence spectrometry (XRF). Additional elements may be added.
1.2 This guide is applicable to fresh FCC catalyst, equilibrium FCC catalyst, spent FCC catalyst, and FCC catalyst fines.
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 requirements prior to use.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
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Designation:D7085–04
Standard Guide for
Determination of Chemical Elements in Fluid Catalytic
Cracking Catalysts by X-ray Fluorescence Spectrometry
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(XRF)
This standard is issued under the fixed designation D7085; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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´ NOTE—Table 2 was corrected editorially in July 2005.
1. Scope E1622 Practice for Correction of Spectral Line Overlap in
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Wavelength-Dispersive X-Ray Spectrometry
1.1 Thisguidecoversseveralcomparableproceduresforthe
quantitative chemical analysis of up to 29 elements in fluid
3. Summary of Guide
catalytic cracking (FCC) catalyst by X-ray fluorescence spec-
3.1 The test specimen is prepared with a clean, uniform, flat
trometry (XRF). Additional elements may be added.
surface. Two commonly used test methods of preparing test
1.2 This guide is applicable to fresh FCC catalyst, equilib-
specimens are listed: briquetting a powder (Test Method A,
rium FCC catalyst, spent FCC catalyst, and FCC catalyst fines.
Sections 8-15) and fusing a powder into a glass bead (Test
1.3 This standard does not purport to address all of the
Method B, Sections 16-23). This surface of the fused or
safety concerns, if any, associated with its use. It is the
briquetted specimen is irradiated with a primary source of X
responsibility of the user of this standard to establish appro-
rays. The secondary X rays produced in the specimen are
priate safety and health practices and determine the applica-
characteristic of the chemical elements present in the speci-
bility of regulatory requirements prior to use.
men.TwotypesofXRFinstrumentationmaybeusedtocollect
2. Referenced Documents and process the X-ray spectra. Using a wavelength-dispersive
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X-ray spectrometer, the secondary X rays produced in the
2.1 ASTM Standards:
specimen are dispersed according to their wavelength by
C982 Guide for Selecting Components for Energy-
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means of crystals or synthetic multilayers. The X-ray intensi-
Dispersive X-Ray Fluorescence (XRF) Systems
ties are measured by detectors set at selected wavelengths and
C1118 Guide for Selecting Components for Wavelength-
recorded as counts (number of X rays impinging on the
Dispersive X-Ray Fluorescence (XRF) Systems
detector per unit time). Concentrations of the elements are
D1977 Test Method for Nickel and Vanadium in FCC
determined from the measured intensities using calibration
Equilibrium Catalysts by Hydrofluoric/Sulfuric Acid De-
curves prepared from suitable reference materials. Using an
composition and Atomic Spectroscopic Analysis
energy-dispersive X-ray spectrometer, the secondary X rays
E1172 Practice for Describing and Specifying a
producedinthespecimenaresenttoadetectorwheretheentire
Wavelength-Dispersive X-Ray Spectrometer
X-ray spectrum is electronically sorted according to the X-ray
E1361 Guide for Correction of Interelement Effects in
energy and processed into counts using a multichannel ana-
X-Ray Spectrometric Analysis
lyzer. The principal advantages of the wavelength-dispersive
E1621 Guide for X-Ray Emission Spectrometric Analysis
X-ray spectrometer are resolution and detection limit. The
principal advantages of the energy-dispersive X-ray spectrom-
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This guide is under the jurisdiction ofASTM Committee D32 on Catalysts and
eter are speed and a generally lower equipment cost.
is the direct responsibility of Subcommittee D32.03 on Chemical Composition.
Current edition approved Nov. 1, 2004. Published November 2004. DOI:
4. Significance and Use
10.1520/D7085-04E01.
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4.1 The chemical composition of fresh FCC catalyst and
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
equilibrium FCC catalyst is a predictor of catalyst perfor-
Standards volume information, refer to the standard’s Document Summary page on
mance.The analysis of catalyst fines also provides information
the ASTM website.
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on the performance of the FCC unit and the fines collection
Withdrawn. The last approved version of this historical standard is referenced
on www.astm.org. device(s).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D7085–04
4.2 The chemical composition of equilibrium FCC catalyst tures from ultra high purity materials that include the elements
is a measure of the hazardous nature or toxicity of the material of interest in the concentration ranges expected in unknown
for purposes of disposal or secondary use. samples.
6.6 Sta
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