US4397767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst poisons passivated with tin compounds plus both sulfur and phosphorus
Assignee: Phillips Petroleum Co
•
Filing: 1982-02-12
•
Granted: 1983-08-09
•
Expires: 2002-02-12
Abstract
Abstract Deposits on a cracking catalyst are passivated by contacting the cracking catalyst with tin and at least one of phosphorus or sulfur.
Inventors
- 👤 John S. Roberts
- 👤 Brent J. Bertus
- 👤 Dwight L. McKay
- 👤 H. Wayne Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:44
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; B01J37/00; B01J37/20; B01J37/28
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
119 words
A process for improving the metals resistance of a zeolite-containing cracking catalyst to have deposited thereon at least one contaminant selected from the group consisting of nickel, vanadium and iron from the cracking of a hydrocarbon feed without incorporating with said cracking catalyst antimony or a compound thereof, said process comprising contacting said zeolite-containing cracking catalyst with at least one treating agent composition represented by the formula ##STR3## wherein R is hydrocarbyl having from 1 to 24 carbon atoms, wherein each X is selected from the group consisting of oxygen and sulfur and at least one X is sulfur, and wherein n is 2 to 4, so as to impart to said cracking catalyst a passivating amount of tin.
Claim 2
Dependent Claim
119 words
A process for improving the metals resistance of a zeolite-containing cracking catalyst to have deposited thereon at least one contaminant selected from the group consisting of nickel, vanadium and iron from the cracking of a hydrocarbon feed without incorporating with said cracking catalyst antimony or a compound thereof, said process comprising contacting said zeolite-containing cracking catalyst with at least one treating agent composition represented by the formula ##STR3## wherein R is hydrocarbyl having from 1 to 24 carbon atoms, wherein each X is selected from the group consisting of oxygen and sulfur and at least one X is sulfur, and wherein n is 2 to 4, so as to impart to said cracking catalyst a passivating amount of tin.
Claim 3
Dependent Claim
42 words
A process as in claim 1 wherein said treating agent is contacted with said cracking catalyst so as to impart to said cracking catalyst a tin concentration of from about 0.0001 to about 4 percent by weight of the contacted cracking catalyst.
Claim 4
Dependent Claim
42 words
A process as in claim 1 wherein said treating agent is contacted with said cracking catalyst so as to impart to said cracking catalyst a tin concentration of from about 0.005 to about 1 percent by weight of the contacted cracking catalyst.
Claim 5
Dependent Claim
42 words
A process as in claim 1 wherein said treating agent is contacted with said cracking catalyst so as to impart to said cracking catalyst a tin concentration of from about 0.01 to about 0.15 percent by weight of the contacted cracking catalyst.
Claim 6
Dependent Claim
18 words
A process as in claim 1 wherein said cracking catalyst is impregnated with a solution of stannic di-n-propyldithiophosphate.
Claim 7
Dependent Claim
106 words
A process for increasing the selectivity of a cracking catalyst for gasoline production in the essential absence of antimony comprising contacting a zeolite-containing cracking catalyst having deposited thereon from the cracking of a hydrocarbon feedstock at least one contaminant selected from the group consisting of nickel, vanadium and iron with at least one treating agent composition represented by the formula ##STR4## wherein each R is hydrocarbyl having from 1 to about 24 carbon atoms and n is 2 or 4 so as to impart to said cracking catalyst a tin concentration of from about 0.005 to about 1 percent by weight of the contacted cracking catalyst.
Claim 8
Dependent Claim
106 words
A process for increasing the selectivity of a cracking catalyst for gasoline production in the essential absence of antimony comprising contacting a zeolite-containing cracking catalyst having deposited thereon from the cracking of a hydrocarbon feedstock at least one contaminant selected from the group consisting of nickel, vanadium and iron with at least one treating agent composition represented by the formula ##STR4## wherein each R is hydrocarbyl having from 1 to about 24 carbon atoms and n is 2 or 4 so as to impart to said cracking catalyst a tin concentration of from about 0.005 to about 1 percent by weight of the contacted cracking catalyst.
Claim 9
Dependent Claim
45 words
A process as in claim 6 wherein a sufficient amount of said composition is contacted with said cracking catalyst so as to impart to said cracking catalyst a tin concentration of from about 0.01 to about 0.15 percent by weight of the contacted cracking catalyst.
Claim 10
Dependent Claim
45 words
A process as in claim 7 wherein n equals 2 and R is selected from the group consisting of ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, amyl, n-hexyl, sec-hexyl, n-heptyl, n-octyl, isooctyl, tert-octyl, cyclopentyl, cyclohexyl, dimethylcyclohexyl, diethylcyclohexyl, phenyltolyl, cresyl, ethylphenyl, butylphenyl, amylphenyl, octylphenyl and vinylphenyl.
Claim 11
Dependent Claim
45 words
A process as in claim 7 wherein n equals 4 and R is selected from the group consisting of ethyl, n-propyl, isopropyl, b-butyl, isobutyl, sec-butyl, tert-butyl, amyl, n-hexyl, sec-hexyl, n-heptyl, n-octyl, isooctyl, tery-octyl, cyclopentyl, cyclohexyl, dimethylcyclohexyl, diethylcyclohexyl, phenyltoly, cresyl, ethylphenyl, butylphenyl, amylphenyl, octylphenyl and vinylphenyl.
Claim 12
Dependent Claim
24 words
A process as in claim 7 wherein stannic di-n-propyldithiophosphate is contacted with said cracking catalyst under conditions employed for the catalytic cracking of hydrocarbons.
Claim 13
Dependent Claim
24 words
A process as in claim 7 wherein stannous di-n-propyldithiophosphate is contacted with said cracking catalyst under conditions employed for the catalytic cracking of hydrocarbons.
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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) | 1986-08-08 | 1987-02-07 | 1987-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-08 | 1991-02-07 | 1991-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-08 | 1995-02-07 | 1995-08-09 | $7700.00 | Window Closed / Lapsed |