Patent US4190552A successfully refreshed from Google Patents.
US4190552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Passivation of metals on cracking catalysts with an antimony tris (hydrocarbyl sulfide)
Assignee: Phillips Petroleum Co
•
Filing: 1978-07-25
•
Granted: 1980-02-26
•
Expires: 1998-07-25
Abstract
Abstract A hydrocarbon cracking catalyst is treated with an antimony tris (hydrocarbyl sulfide) to passivate thereon contaminating metals, e.g., vanadium, iron, and/or nickel. Used or unused catalyst can be treated.
Inventors
- 👤 Brent J. Bertus
- 👤 Dwight L. McKay
- 👤 Harold W. Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:21
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; Y; Y10; Y10S; Y10S502/00; Y10S502/521
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
29 words
A method for passivating a contaminating metal upon a hydrocarbon cracking catalyst, which comprises contacting said cracking catalyst with an antimony tris (hydrocarbyl sulfide) to add the same thereto.
Claim 2
Independent Claim
29 words
A method for passivating a contaminating metal upon a hydrocarbon cracking catalyst, which comprises contacting said cracking catalyst with an antimony tris (hydrocarbyl sulfide) to add the same thereto.
Claim 3
Dependent Claim
35 words
A process according to claim 1 wherein the cracking catalyst is one which contains at least one of silica-alumina and a zeolite and the contaminating metal is at least one of vanadium, iron, and/or nickel.
Claim 4
Dependent Claim
31 words
A cracking catalyst suitable for cracking a hydrocarbon which has been treated to passivate a contaminating metal whenever it appears thereon by incorporating with said catalyst an antimony tris (hydrocarbyl sulfide).
Claim 5
Dependent Claim
31 words
A cracking catalyst suitable for cracking a hydrocarbon which has been treated to passivate a contaminating metal whenever it appears thereon by incorporating with said catalyst an antimony tris (hydrocarbyl sulfide).
Claim 6
Dependent Claim
29 words
A cracking catalyst suitable for cracking a hydrocarbon which has been treated to passivate a contaminating metal whenever it appears thereon, by incorporating with said catalyst antimony tris (thiophenoxide).
Claim 7
Dependent Claim
29 words
A cracking catalyst suitable for cracking a hydrocarbon which has been treated to passivate a contaminating metal whenever it appears thereon, by incorporating with said catalyst antimony tris (thiophenoxide).
Claim 8
Dependent Claim
29 words
A method according to claim 1 wherein the antimony tris (hydrocarbyl sulfide) is represented by the formula (RS) 3 Sb wherein R contains not more than 18 carbon atoms.
Claim 9
Dependent Claim
39 words
A method according to claim 5 wherein the antimony compound is at least one selected from antimony tris (ethyl sulfide), antimony tris (cyclohexylsulfide), antimony tris (tetradecyl sulfide), antimony tris (thiophenoxide), antimony tris (benzyl sulfide), and antimony tris (dibutylphenyl sulfide).
Claim 10
Dependent Claim
14 words
A method according to claim 1 wherein the antimony compound is antimony tris (thiophenoxide).
References Cited (Backward Citations)
US2129693A
Cited
US3506567A
Cited
US3711422A
Cited
US3756989A
Cited
US4031002A
Cited
US3979472A
Cited
US4036740A
Cited
US4111845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |