ASTM D3907-03

Standard Test Method for Testing Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test

SIGNIFICANCE AND USE
The microactivity test provides data to assess the relative performance of FCC catalyst. Because results are affected by catalyst pretreatment, feedstock characteristics, test equipment, and operating parameters, adherence to this test method is a prerequisite for correct interpretation of results. Apparatus, test conditions, and analytical procedures actually used should closely resemble those described in this test method.
Caution should be used in interpreting results above 80 weight % conversion due to the significance of overcracking.
SCOPE
1.1 This test method covers determining the activity of equilibrium or laboratory-deactivated fluid catalytic cracking (FCC) catalysts, or both. This is evaluated on the basis of weight percent conversion of gas oil in a microactivity unit. The selectivity of FCC catalysts can be determined using Test Method D 5154.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only.
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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2003
• Technical Committee: D32 - Catalysts
• Drafting Committee: D32.04 - Catalytic Properties

Relations

• Replaces: ASTM D3907-92 - Standard Method for Testing Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test (Withdrawn 2001)
• Effective Date: 01-Oct-2003
• Replaced By: ASTM D3907-03(2008) - Standard Test Method for Testing Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test
• Effective Date: 01-Apr-2008
• Referred By: ASTM D7206/D7206M-19 - Standard Guide for Cyclic Deactivation of Fluid Catalytic Cracking (FCC) Catalysts with Metals
• Effective Date: 01-Oct-2003
• Referred By: ASTM D4463/D4463M-19 - Standard Guide for Metals Free Steam Deactivation of Fresh Fluid Cracking Catalysts
• Effective Date: 01-Oct-2003
• Referred By: ASTM D5154/D5154M-18 - Standard Test Method for Determining Activity and Selectivity of Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test
• Effective Date: 01-Oct-2003

Standards Content (Sample)

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
Designation:D3907–03
Standard Test Method for
Testing Fluid Catalytic Cracking (FCC) Catalysts by
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Microactivity Test
This standard is issued under the fixed designation D 3907; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 ASTM consensus mean conversion—each reference
catalyst has a consensus mean conversion value assigned to it
1.1 This test method covers determining the activity of
by Committee D32 (see 11.2).
equilibrium or laboratory-deactivated fluid catalytic cracking
3.1.2 ASTM reference catalysts—a set of equilibrium fluid
(FCC) catalysts, or both. This is evaluated on the basis of
cracking catalysts with conversions within the useful range of
weight percent conversion of gas oil in a microactivity unit.
this test method is used to improve the reproducibility of test
The selectivity of FCC catalysts can be determined using Test
results between different laboratories. Samples of the ASTM
Method D 5154.
reference catalysts can be obtained from NIST.
1.2 The values stated in SI units are to be regarded as
3.1.3 ASTM standard feed—aspecificbatchofgasoilthatis
standard. The values given in parentheses are provided for
used as feedstock in the described test method. This standard
information only.
feed can be obtained from the National Institute of Standards
1.3 This standard does not purport to address all of the
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and Technology (NIST).
safety concerns, if any, associated with its use. It is the
3.1.4 conversion calibration curve—a calibration curve can
responsibility of the user of this standard to establish appro-
be obtained by plotting the consensus mean conversion values
priate safety and health practices and determine the applica-
for the ASTM reference catalysts (see 11.2) versus the indi-
bility of regulatory limitations prior to use.
vidual laboratory-measured conversion for the same catalysts.
2. Referenced Documents
3.1.5 measured conversion—is calculated as the difference
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betweentheweightoffeedusedandtheweightofunconverted
2.1 ASTM Standards:
material, divided by the weight of feed used, times 100 %.The
D 2887 Test Method for Boiling Range Distribution of
unconverted material is defined as all liquid product with a
Petroleum Fractions by Gas Chromatography
boiling point above 216°C (421°F).
D 5154 Test Method for Determining the Activity and
Selectivity of Fluid Catalytic Cracking (FCC) Catalysts by
4. Summary of Test Method
3
Microactivity Test
4.1 A sample of cracking catalyst in a fixed-bed reactor is
E 105 Practice for Probability Sampling of Materials
contacted with gas oil (ASTM standard feed). Cracked liquid
E 177 Practice for Use of the Terms Precision and Bias in
products are analyzed for unconverted material and the con-
ASTM Test Methods
version is calculated.
E 456 Terminology Relating to Quality and Statistics
4.2 A corrected conversion value can be obtained from the
E 691 Practice for Conducting an Interlaboratory Study to
measured conversion and the conversion calibration curve.
Determine the Precision of a Test Method
5. Significance and Use
3. Terminology
5.1 The microactivity test provides data to assess the rela-
3.1 Definitions of Terms Specific to This Standard:
tive performance of FCC catalyst. Because results are affected
by catalyst pretreatment, feedstock characteristics, test equip-
ment, and operating parameters, adherence to this test method
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This test method is under the jurisdiction of ASTM Committee D32 on
is a prerequisite for correct interpretation of results.Apparatus,
Catalysis and is the direct responsibility of Subcommittee D32.04 on Catalytic
test conditions, and analytical procedures actually used should
Properties.
closely resemble those described in this test method.
Current edition approved Oct. 1, 2003. Published October 2003. Originally
approved in 1992. Discontinued in 2001 and reinstated as D 3907–03. Last previous 5.2 Caution should be used in interpreting results above 80
edition approved in 2000 as D 3907–00.
weight % conversion due to the significance of overcracking.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
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the ASTM website. Available from National Institute of Standards and Technology (NIST), 100
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