US4960506A
Expired / Lapsed
US
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Desulfurization of hydrocarbons using molybdenum or tungsten sulfide catalysts promoted with low valent group VIII metals
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1989-03-20
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Granted: 1990-10-02
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Expires: 2009-03-20
Abstract
Abstract Hydrocarbon feedstocks are selectively hydrodesulfurized by contacting the feedstock in the presence of hydrogen with a predecessor catalyst comprising molybdenum or tungsten sulfide which has been promoted by reaction with a transition metal containing organo-metallic complex wherein the valence of the metal is 0 or +1 at the time of reaction and the contacting is done at a temperature and pressure sufficient to substantially hydrodesulfurize the hydrocarbon.
Inventors
- 👤 Thomas R. Halbert
- 👤 Edward I. Stiefel
- 👤 Russell R. Chianelli
- 👤 Teh C. Ho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:23
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/1616; B01J27/00; B01J27/02; B01J27/04; B01J27/047; B01J27/049; B01J31/18; B01J31/1845; B01J31/185; B01J31/22; B01J31/2282; B01J31/2295; B01J31/26; B01J31/34; B01J37/00; B01J37/20; B01J21/00; B01J21/02; B01J21/04; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2531/00; B01J2531/02; B01J2531/0202; B01J2531/0208; B01J2531/80; B01J2531/84
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
87 words
A process for substantially selectively hydrodesulfurizing a hydrocarbon containing at least some sulfur and nitrogen containing compounds comprising the steps of: contacting the hydrocarbon, in the presence of at least an effective amount of hydrogen with a predecessor catalyst comprising molybdenum or tungsten sulfide which has been promoted by reaction with a transition metal containing organo-metallic complex wherein the valence of the metal is 0 or +1 at said reacting, and said contacting being done at a temperature and pressure sufficient to substantially selectively hydrodesulfurize the hydrocarbon.
Claim 2
Dependent Claim
87 words
A process for substantially selectively hydrodesulfurizing a hydrocarbon containing at least some sulfur and nitrogen containing compounds comprising the steps of: contacting the hydrocarbon, in the presence of at least an effective amount of hydrogen with a predecessor catalyst comprising molybdenum or tungsten sulfide which has been promoted by reaction with a transition metal containing organo-metallic complex wherein the valence of the metal is 0 or +1 at said reacting, and said contacting being done at a temperature and pressure sufficient to substantially selectively hydrodesulfurize the hydrocarbon.
Claim 3
Dependent Claim
11 words
The process of claim 1 wherein said organometallic complex contains Fe.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein said organometallic complex contains Co.
Claim 5
Dependent Claim
11 words
The process of claim 1 wherein said organometallic complex contains Ni.
Claim 6
Dependent Claim
28 words
The process of claim 1 wherein the molybdenum or tungsten sulfide is in the form of MoS 2+e and/or WS 2+e wherein e is between -1 and +1.
Claim 7
Dependent Claim
15 words
The process of claim 5 wherein the MoS 2+e and or WS 2+e is supported.
Claim 8
Dependent Claim
10 words
The process of claim 6 wherein the support comprises alumina.
Claim 9
Dependent Claim
30 words
The process of claim 7 wherein the support additionally contains 1 to 20 weight percent of bentonite clay, diatomaceous earth, zeolite, silica, activated carbon, magnesia, silica, zirconia, boria or titania.
Claim 10
Dependent Claim
20 words
The process of claim 1 wherein said predecessor catalyst has additionally been treated with H 2 and H 2 S.
Claim 11
Dependent Claim
138 words
The process of claim 1 wherein the molybdenum or tungsten sulfide which has been promoted by reaction with a transition metal containing organo-metallic complex consists essentially of a molybdenum or tungsten sulfide anion of the formula Mo x S y 2- or W x S y 2- where x may be 1, 2 or 3 and y may be 4, 8, 9, 12 or 13 and a cation having the formula R 1 R 2 R 3 R 4 N+ where R 1 , R 2 , R 3 and R 4 may be the same or different and are selected from hydrogen, C 1 to C 10 alkyls, C 8 to C 18 cycloalkyls, C 6 to C 18 alkyl substituted cycloalkyls, C 6 to C 18 aromatics and C 7 to C 11 alkyl substituted aromatics.
Claim 12
Dependent Claim
25 words
The process of claim 10, wherein each of R 1 , R 2 , R 3 and R 4 is a normal C 4 alkyl.
Claim 13
Dependent Claim
50 words
The process of claim 10 wherein said organometallic complex is selected from Co 2 (CO) 8 , Co(NO)(CO) 3 , CpCo(CO) 2 , (1,5-COD) 2 Ni, Ni(CO) 4 , ((C 2 H 5 O) 3 P) 4 Ni, C 4 H 6 Fe(CO) 3 and Fe 2 (CO) 9 .
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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) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |