EP0056004A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Production of carbon filaments in the presence of iron monoxide
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1982-01-04
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Granted: —
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Expires: 2002-01-04
Abstract
Abstract Iron monoxide is produced by treating substantially pure iron with steam at a temperature from at least about 540°C and is used for producing carbon filaments by dissociating a carbon-containing gas at a temperature up to about 800°C.
Inventors
- 👤 David John Cabena Yates
- 👤 Rees Terence Keith Baker
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 23:05
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C01; C01G; C01G49/00; C01G49/02; C01G49/04; D; D01; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/127; D01F9/1273; D01F9/1275; D01F9/1278; C01P; C01P2002/00; C01P2002/80; C01P2004/00; C01P2004/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
66 words
A method for producing iron monoxide which comprises: (a) heating a metallic iron composition, comprising at least about 95 wt.% iron, to a temperature of at least about 540°C; and (b) contacting the heated iron composition with steam; wherein said iron composition is substantially free of (aa) protective oxide forming elements and (bb) metal components which are volatile at the temperature employed in step (a) above.
Claim 2
Independent Claim
66 words
A method for producing iron monoxide which comprises: (a) heating a metallic iron composition, comprising at least about 95 wt.% iron, to a temperature of at least about 540°C; and (b) contacting the heated iron composition with steam; wherein said iron composition is substantially free of (aa) protective oxide forming elements and (bb) metal components which are volatile at the temperature employed in step (a) above.
Claim 3
Dependent Claim
15 words
A method according to-claim 1 wherein the iron composition contains at least 98 wt.% iron.
Claim 4
Independent Claim
21 words
A method according to either of claims 1 and 2 wherein the temperature employed is from about 550°C to about 900°C.
Claim 5
Dependent Claim
16 words
A method according to claim 3 wherein the temperature employed is from about 700 to 800°C.
Claim 6
Independent Claim
33 words
A method for producing carbon filaments comprising dissociating one or more carbon-containing gases in the presence of iron monoxide at a temperature from about the dissociation temperature of the gas to about 800°C.
Claim 7
Independent Claim
33 words
A method for producing carbon filaments comprising dissociating one or more carbon-containing gases in the presence of iron monoxide at a temperature from about the dissociation temperature of the gas to about 800°C.
Claim 8
Dependent Claim
23 words
A method according to claim 5 wherein the carbon-containing gas is carbon monoxide, an acetylene, an olefin, a paraffin or a mixture thereof.
Claim 9
Dependent Claim
20 words
A method according to claim 6 wherein the carbon-containing gas is one or more C 2 to C 4 paraffins.
Claim 10
Independent Claim
22 words
A method according to any one of claims 5 to 7 wherein the temperature employed is from about 700°C to about 800°C.
Claim 11
Independent Claim
30 words
A method according to any one of claims 5 to 8 wherein the iron oxide has been produced by the method according to any one of claims 1 to 4.
References Cited (Backward Citations)
No citation records indexed.
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