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US4377494A
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Cracking catalysts passivated by barium
Assignee: Phillips Petroleum Co
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Filing: 1980-01-15
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Granted: 1983-03-22
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Expires: 2000-01-15
Abstract
Abstract A cracking catalyst is contacted with barium or a compound thereof to mitigate the adverse effects of catalyst contaminants.
Inventors
- 👤 Brent J. Bertus
- 👤 Dwight L. McKay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:35
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; C10G11/05
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
88 words
A process to passivate the metals on a cracking catalyst comprising contacting a zeolite-modified silica-alumina fluid catalytic cracking catalyst having deposited thereon a detrimental amount of at least one detrimental metal selected from the group consisting of nickel, vanadium and iron with a treating agent selected from barium and barium compounds so as to impart to said cracking catalyst a barium concentration of from about 0.01 to about 8 weight percent and mitigate the worsened cracking characteristics of the catalyst caused by the at least one detrimental metal.
Claim 2
Dependent Claim
88 words
A process to passivate the metals on a cracking catalyst comprising contacting a zeolite-modified silica-alumina fluid catalytic cracking catalyst having deposited thereon a detrimental amount of at least one detrimental metal selected from the group consisting of nickel, vanadium and iron with a treating agent selected from barium and barium compounds so as to impart to said cracking catalyst a barium concentration of from about 0.01 to about 8 weight percent and mitigate the worsened cracking characteristics of the catalyst caused by the at least one detrimental metal.
Claim 3
Dependent Claim
16 words
A process as in claim 1 wherein said cracking catalyst is impregnated with said treating agent.
Claim 4
Dependent Claim
16 words
A process as in claim 1 wherein said cracking catalyst is mixed with said treating agent.
Claim 5
Dependent Claim
16 words
A process as in claim 1 wherein said cracking catalyst is sprayed with said treating agent.
Claim 6
Dependent Claim
27 words
A process as in claim 1 wherein said treating agent is a barium compound selected from the group consisting of organic barium compounds and inorganic barium compounds.
Claim 7
Dependent Claim
30 words
A process as in claim 5 wherein said inorganic barium compound is selected from the group consisting of a barium salt of a mineral acid and a basic barium compound.
Claim 8
Dependent Claim
26 words
A process as in claim 6 wherein said barium salt is selected from the group consisting of barium sulfate, barium nitrate, barium halide and barium oxyhalide.
Claim 9
Dependent Claim
27 words
A process as in claim 6 wherein said basic barium compound is selected from the group consisting of barium oxide, barium hydroxide, barium hydrosulfide and barium carbonate.
Claim 10
Dependent Claim
29 words
A process as in claim 5 wherein said organic barium compound is selected from the group consisting of a barium salt of a carboxylic acid and a barium complex.
Claim 11
Dependent Claim
28 words
A process as in claim 9 wherein said carboxylic acid is selected from the group consisting of acetic acid, butyric acid, citric acid, formic acid and stearic acid.
Claim 12
Dependent Claim
30 words
A process as in claim 9 wherein said barium complex is comprised of a chelating agent selected from the group consisting of a 1,3-diketone, ethylenediamine tetraacetic acid, and nitrilotriacetic acid.
Claim 13
Dependent Claim
13 words
A process as in claim 5 wherein said treating agent comprises barium acetylacetonate.
Claim 14
Dependent Claim
39 words
A process as in claim 1 wherein the amount of treating agent contacted with said cracking catalyst is an amount sufficient to impart to said cracking catalyst a barium concentration of from about 0.02 to about 2 weight percent.
Claim 15
Dependent Claim
52 words
A process as in claim 1 wherein the amount of treating agent contacted with said cracking catalyst is an amount sufficient to impart to said cracking catalyst a weight ratio of barium to the combined weight of vanadium and four times the weight of nickel of from about 2:100 to about 200:100.
Claim 16
Dependent Claim
52 words
A process as in claim 14 wherein the amount of treating agent contacted with said cracking catalyst is an amount sufficient to impart to said cracking catalyst a weight ratio of barium to the combined weight of vanadium and four times the weight of nickel of from about 5:100 to about 100:100.
Claim 17
Dependent Claim
52 words
A process as in claim 15 wherein the amount of treating agent contacted with said cracking catalyst is an amount sufficient to impart to said cracking catalyst a weight ratio of barium to the combined weight of vanadium and four times the weight of nickel of from about 10:100 to about 80:100.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |