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US4208394A
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Commercial production of transition metal sulfides from their halides
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1975-12-03
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Granted: 1980-06-17
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Expires: 1995-12-03
Abstract
Abstract Sulfides of Group IVb and Vb transition metals are produced by reacting their halides with carbon disulfide. The reactions can be between liquid or gaseous halides and liquid or gaseous carbon disulfide. The reaction products are formed and recovered as solids and the other reaction product, carbon tetrahalide, is carried off as a gas and recovered. A specific example is the production of titanium disulfide by reacting titanium tetrachloride with carbon disulfide.
Inventors
- 👤 Russell R. Chianelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:34
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; C; C01; C01G; C01G1/00; C01G1/12; C01G23/00; C01G23/007; C01G33/00; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
58 words
A process for producing a transition metal disulfide which consisting of reacting a halide selected from tetravalent and pentavalent halides of at least one transition metal selected from Groups IVB or VB of the Periodic Table of the Elements with carbon disulfide at a temperature between about 400° C. and 800° C. to form the transition metal disulfide.
Claim 2
Dependent Claim
58 words
A process for producing a transition metal disulfide which consisting of reacting a halide selected from tetravalent and pentavalent halides of at least one transition metal selected from Groups IVB or VB of the Periodic Table of the Elements with carbon disulfide at a temperature between about 400° C. and 800° C. to form the transition metal disulfide.
Claim 3
Dependent Claim
17 words
The process as described in claim 1 wherein the halide of said transition metal is a chloride.
Claim 4
Dependent Claim
17 words
The process as described in claim 2 wherein the chloride of the transition metal is titanium tetrachloride.
Claim 5
Dependent Claim
21 words
The process as described in claim 3 wherein the carbon disulfide and the titanium tetrachloride are both in the liquid state.
Claim 6
Dependent Claim
20 words
The process as described in claim 3 wherein the titanium tetrachloride and the carbon disulfide are in the gaseous state.
Claim 7
Dependent Claim
15 words
The process as described in claim 3 wherein the reaction is conducted at ambient pressures.
Claim 8
Dependent Claim
15 words
The process as described in claim 3 wherein the process is conducted at superatmospheric pressures.
Claim 9
Dependent Claim
20 words
The process as described in claim 3 wherein a diluent is present in order to control the rate of reaction.
Claim 10
Dependent Claim
17 words
The process as described in claim 2 wherein the chloride of the transition metal is zirconium tetrachloride.
Claim 11
Dependent Claim
17 words
The process as described in claim 2 wherein the chloride of the transition metal is hafnium tetrachloride.
Claim 12
Dependent Claim
17 words
The process as described in claim 2 wherein the chloride of the transition metal is niobium pentachloride.
Claim 13
Dependent Claim
17 words
The process as described in claim 2 wherein the chloride of the transition metal is tantalum pentachloride.
Claim 14
Dependent Claim
17 words
The process as described in claim 2 wherein the chloride of the transition metal is vanadium tetrachloride.
Claim 15
Dependent Claim
101 words
A process for producing a sulfide of at least one transition metal selected from the group consisting of Grous IVb or Vb of the Periodic Table of the Elements which consisting of establishing a reaction zone heated to a temperature between about 400° C. and 800° C. in reactor and flowing at least one gaseous stream of a carrier gas and vapors of at least one halide of the Group IVb or Vb transition metal and of carbon disulfide through the reaction zone whereby the transition metal halide reacts with the carbon disulfide to produce a disulfide of the transition metal.
Claim 16
Dependent Claim
101 words
A process for producing a sulfide of at least one transition metal selected from the group consisting of Grous IVb or Vb of the Periodic Table of the Elements which consisting of establishing a reaction zone heated to a temperature between about 400° C. and 800° C. in reactor and flowing at least one gaseous stream of a carrier gas and vapors of at least one halide of the Group IVb or Vb transition metal and of carbon disulfide through the reaction zone whereby the transition metal halide reacts with the carbon disulfide to produce a disulfide of the transition metal.
Claim 17
Dependent Claim
32 words
The process as described in claim 14 wherein the vapors of the transition metal halide and the carbon disulfide are present in the carrier gas in a molar ratio of about 1:1.
Claim 18
Dependent Claim
89 words
A process for producing a sulfide of at least one transition metal selected from the group consisting of Groups IVb or Vb of the Periodic Table of the Elements which consisting of feeding at least one halide of the Group IVb or Vb transition metal and carbon disulfide to a reaction vessel, evacuating the vessel, sealing the evacuated vessel and then heating the sealed vessel to between about 400° and 800° at which temperature the halide reacts with the carbon disulfide to form a disulfide of the transition metal.
Claim 19
Dependent Claim
89 words
A process for producing a sulfide of at least one transition metal selected from the group consisting of Groups IVb or Vb of the Periodic Table of the Elements which consisting of feeding at least one halide of the Group IVb or Vb transition metal and carbon disulfide to a reaction vessel, evacuating the vessel, sealing the evacuated vessel and then heating the sealed vessel to between about 400° and 800° at which temperature the halide reacts with the carbon disulfide to form a disulfide of the transition metal.
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) | 1983-06-17 | 1983-12-17 | 1984-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-17 | 1987-12-17 | 1988-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-17 | 1991-12-17 | 1992-06-17 | $7700.00 | Window Closed / Lapsed |