ASTM D3907-92
(Test Method)Standard Method for Testing Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test (Withdrawn 2001)
Standard Method for Testing Fluid Catalytic Cracking (FCC) Catalysts by Microactivity Test (Withdrawn 2001)
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 D5154.
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 problems, 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.
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Standards Content (Sample)
ASTM D3907 92 m 0759530 05L4149 4LT m
AMERICAN SOCIETY FOR TESllNG AND MATERIALS
([lb Designation: D 3907 - 92
1916 Race St Philadelphia, Pa 19103
Reprinted from the Annwl Book of ASTM Standards. Copyright ASTM
If not listed in the current combined inde& will appear in the nexi edition.
Standard Method for
Testing Fluid Catalytic Cracking (FCC) Catalysts by
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 (c) indicates an editorial change since the last revision or reapproval.
of test results between different laboratories. Samples of the
1. Scope
ASTM reference catalysts can be obtained from NIST.
1. I This test method covers determining the activity of
3.1.3 rneusured conversion-is calculated as the differ-
equilibrium or laboratory-deactivated fluid catalytic cracking
ence between the weight of feed used and the weight of
(FCC) catalysts, or both. This is evaluated on the basis of
unconverted material, divided by the weight of feed used.
weight percent conversion of gas oil in a microactivity unit.
times 100 9%. The unconverted material is defined as all
The selectivity of FCC catalysts can be determined using
liquid product with a boiling point above 2 16°C (47 I "F).
Test Method D 5154.
3.1.4 ASTM consenszrs mean c~onrersion-each reference
1.2 The values stated in SI units are to be regarded as
catalyst has a consensus mean conversion value assigned to it
standard. The values given in parentheses are provided for
by Committee D-32 (see I 1.2).
information only.
3.1.5 co~wrsion culibrurion c-I~Y"-+I calibration curve
1.3 7his srundurd does not purport lo address all oJ the
can be obtained by plotting the consensus mean conversion
sa&y problems, if any, associated with ils use. It is the
values for the ASTM reference catalysts (see 1 1.2) versus the
responsibility of the user of this standard to establish appro-
individual laboratory-measured conversion for the same
priute safity und heulth practices und determine [he upplicu-
catalysts.
Oility oJregulutorv limitutions prior to ~rse.
4. Summary of Test Method
2. Referenced Documents
4.1 A sample of cracking catalyst in a fixed-bed reactor is
2.1 ASTM Standards:
contacted with gas oil (ASTM standard feed). Cracked liquid
D2887 Test Method for Boiling Range Distribution of
products are analyzed for unconverted material and the
Petroleum Fractions by Gas Chromatography2
conversion is calculated.
5 154 Test Method for Determining the Activity and
D
4.2 A corrected conversion value can be obtained from
Selectivity of Fluid Catalytic Cracking (FCC) Catalysts
the measured conversion and the conversion calibration
by Microactivity Test3
curve.
E 105 Practice for Probability Sampling of Materials4
5. Significance and Use
E 177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods4
5.1 The microactivity test provides data to assess the
E 456 Terminology Relating to Quality and Statistics4
relative performance of FCC catalyst. Because results are
E 69 1 Practice for Conducting an Interlaboratory Study to
affected by catalyst pretreatment, feedstock characteristics,
Determine the Precision of a Test Method4
test equipment, and operating parameters, adherence to this
test method is a prerequisite for correct interpretation of
3. Terminology
results. Apparatus, test conditions, and analytical procedures
actually used should closely resemble those described in this
3.1 Descriptions of Terms Specific to This Standard:
method.
3.1.1 ASTM standard feed-a specific batch of gas oil
5.2 Caution should be used in interpreting results above
that is used as feedstock in the described method. This
80 weight 5% conversion due to the significance of
standard feed can be obtained from the National Institute of
overcracking.
Standards and Technology (NIST).5
3.1.2 ASTM reJerence catalysts-a set of equilibrium
6. Apparatus
fluid cracking catalysts with conversions within the useful
6.1 Flow Charl-The flow chart is given in Fig. 1. During
range of this method is used to improve the reproducibility
75 S, gas oil from a syringe is forced over 4 g of catalyst in a
fixed-bed reactor. Liquid products are collected in a receiver
'This tcst method is under the jurisdiction of ASTM Committee D-32 on
and kept at a wet ice temperature.
Catalysls and is the direct responsibility of Subcommittee D32.04 on Catalytic
6.2 Syringe, 2.5 mL is used for oil addition. It should be
Propenics.
equipped with a multiport, high-pressure valve to allow
Current edition approved Jan. 15, 1992. Published March 1992. Originally
puhlished
...
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