US4560470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodesulfurization catalysis by Chevrel phase compounds
Assignee: United States, ENERGY THE, Department of
•
Filing: 1985-05-20
•
Granted: 1985-12-24
•
Expires: 2005-05-20
Abstract
Abstract A process is disclosed for the hydrodesulfurization of sulfur-containing hydrocarbon fuel with reduced ternary molybdenum sulfides, known as Chevrel phase compounds. Chevrel phase compounds of the general composition MxMo6S8, with M being Ho, Pb, Sn, Ag, In, Cu, Fe, Ni, or Co, were found to have hydrodesulfurization activities comparable to model unpromoted and cobalt-promoted MoS2 catalysts. The most active catalysts were the "large" cation compounds (Ho, Pb, Sn), and the least active catalysts were the "small" cation compounds (Cu, Fe, Ni, Co.).
Inventors
- 👤 Kevin F. McCarty
- 👤 Glenn L. Schrader
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:17
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/02; C10G45/04; C10G45/06; C10G45/08; B; B01; B01J; B01J27/00; B01J27/02; B01J27/04; B01J27/047; B01J27/051; B01J27/0515
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
74 words
A hydrodesulfurization process comprising, contacting a sulfur-containing gaseous hydrocarbon with a chevrel phase compound of the general formula: M x Mo 6 S 8 at a concentration and for a time sufficient to selectively reduce the sulfur content of the hydrocarbon, wherein M is selected from large and intermediate cations for chevrel phase compounds and M and x are selected to maintain the oxidation state of most of the Mo to less than +4.
Claim 2
Dependent Claim
74 words
A hydrodesulfurization process comprising, contacting a sulfur-containing gaseous hydrocarbon with a chevrel phase compound of the general formula: M x Mo 6 S 8 at a concentration and for a time sufficient to selectively reduce the sulfur content of the hydrocarbon, wherein M is selected from large and intermediate cations for chevrel phase compounds and M and x are selected to maintain the oxidation state of most of the Mo to less than +4.
Claim 3
Dependent Claim
15 words
The hydrodesulfurization process of claim 1, wherein the reaction is conducted at an elevated temperature.
Claim 4
Dependent Claim
13 words
The hydrodesulfurization process of claim 2, wherein the temperature is about 400° C.
Claim 5
Dependent Claim
18 words
The hydrodesulfurization process of claim 1, wherein the sulfur containing compounds include thiophene, Mercaptans disulfides and condensed thiophenes.
Claim 6
Dependent Claim
21 words
The hydrodesulfurization process of claim 1, wherein M is selected from the group consisting of Ho, Pb, Sn, Ag and In.
Claim 7
Dependent Claim
19 words
The hydrodesulfurization process of claim 1, wherein M is selected from the group consisting of Ho, Pb and Sn.
Claim 8
Dependent Claim
27 words
The hydrodesulfurization process of claim 1, wherein the oxidation state of Mo in the chevrel phase compound is maintained in the range of from +2 to +22/3.
Claim 9
Dependent Claim
80 words
A hydrodesulfurization process comprising, contacting a sulfur-containing gaseous hydrocarbon in the presence of hydrogen with a Chevrel phase compound of the general formula: M x Mo 6 Z 8 at an elevated temperature for a time sufficient to reduce the sulfur content of the hydrocarbon while maintaining hydrogenation reactions at a relatively low level, wherein M is selected from large and intermediate cations for chevrel phase compounds and Z is selected from the group consisting of sulfur, selenium and tellurium.
Claim 10
Dependent Claim
80 words
A hydrodesulfurization process comprising, contacting a sulfur-containing gaseous hydrocarbon in the presence of hydrogen with a Chevrel phase compound of the general formula: M x Mo 6 Z 8 at an elevated temperature for a time sufficient to reduce the sulfur content of the hydrocarbon while maintaining hydrogenation reactions at a relatively low level, wherein M is selected from large and intermediate cations for chevrel phase compounds and Z is selected from the group consisting of sulfur, selenium and tellurium.
Claim 11
Dependent Claim
21 words
The hydrodesulfurization process of claim 8, wherein the oxidation state of Mo in the chevrel phase compounds is less than +3.
Claim 12
Dependent Claim
19 words
The hydrodesulfurization process of claim 9, wherein the sulfur-containing gaseous hydrocarbon is contacted with the chevrel phase compounds intermittently.
Claim 13
Dependent Claim
16 words
The hydrodesulfurization process of claim 8, wherein the desulfurization takes place in the absence of oxygen.
Claim 14
Dependent Claim
21 words
The hydrodesulfurization process of claim 8, wherein the desulfurization takes place at atmospheric pressure at a temperature of about 400° C.
Claim 15
Dependent Claim
21 words
The hydrodesulfurization process of claim 8, wherein M is selected from the group consisting of Ho, Pb, Sn, Ag and In.
Claim 16
Dependent Claim
19 words
The hydrodesulfurization process of claim 8, wherein M is selected from the group consisting of Ho, Pb and Sn.
Claim 17
Dependent Claim
10 words
The hydrodesulfurization process of claim 14, wherein Z is sulfur.
Claim 18
Dependent Claim
21 words
The hydrodesulfurization process of claim 8, wherein the oxidation state of Mo in the chevrel phase compounds is less than +3.
Claim 19
Dependent Claim
19 words
The hydrodesulfurization process of claim 8, wherein the sulfur-containing gaseous hydrocarbon is contacted with the chevrel phase compounds intermittently.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |