Claims
- 1. A process of producing microfibrous carbon comprising pyrolyzing a carbon containing substance in the presence of a catalyst comprising:
- (a) an iron Group VIII metal containing substance, selected from iron, cobalt and nickel,
- (b) a Group IVb metal containing substance, and
- (c) a Group Va element containing substance.
- 2. The process of claim 1 wherein (a) and (b) are oxides and (c) is selected from substances containing phosphorus or arsenic.
- 3. The process of claim 2 wherein (c) is phosphorus.
- 4. The process of claims 2 wherein (a) is at least one oxide selected from the oxides of iron, cobalt, and nickel, and (b) is at least one oxide selected from oxides of titanium and zirconium.
- 5. The process of claim 3 wherein (a) is nickel oxide, and (b) is titanium oxide.
- 6. The process of claim 5 wherein the carbon containing substance is at least one substance selected from alkanes and alkenes.
- 7. The process of claim 5 wherein the carbon containing substance is an alkane.
- 8. The process of claim 5 wherein the carbon containing substance is butane.
- 9. In a process of pyrolyzing carbon containing substances in the presence of a catalyst containing iron group metal selected from iron, cobalt and nickel and group IVb metal to produce microfibrous carbon, the improvement wherein from 0.001 to 20% by weight based on the weight of the total catalyst composition of a Group Va element containing additive is employed to increase the surface area of the carbon product.
- 10. The process of claim 9 wherein the additive is elemental phosphorus or a compound of phosphorus.
- 11. The process of claim 10 wherein the amount of additive employed ranges from 0.01 to 10 weight percent based on the weight of the total catalyst composition.
- 12. The process of claim 11 wherein the additive is elemental phosphorus.
- 13. The process of claim 9 wherein the catalyst is nickel oxide and titanium oxide.
- 14. The process of claim 9 wherein the catalyst contains nickel oxide, titanium oxide, and phosphorous.
- 15. The process of claim 9 wherein the carbon containing substance is at least one substance selected from alkanes and alkenes.
- 16. The process of claim 9 wherein the carbon containing substance is an alkane.
- 17. The process of claim 9 wherein the carbon containing substance is butane.
Parent Case Info
This application is a divisional application of our copending patent application Ser. No. 343,642, filed Jan. 28, 1982, abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1469930 |
Apr 1977 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Baird, Fryer, & Grant, "Carbon Formation on Iron and Nickel Foils by Hydrocarbon Pyrolysis--Reactions at 700.degree. C.", Carbon, vol. 12 (1974) pp. 591-602. |
"Structure of the Carbon Deposited from Carbon Monoxide on Iron, Cobalt and Nickel," Journal of Physical Chemistry, vol. 59 (Nov. 1955) pp. 1153-1155. |
Divisions (1)
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Number |
Date |
Country |
Parent |
343642 |
Jan 1982 |
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