| United States Patent | 5,420,371 |
| Malhotra, et. al. | May 30, 1995 |
| Inventors: | Malhotra; Ripudaman (San Carlos, CA); Tse; Doris S. (San Jose, CA); McMillen; Donald F. (Menlo Park, CA). |
| Assignee: | SRI International (Menlo Park, CA). |
| Appl. No.: | 210,884 |
| Filed: | Mar. 18, 1994 |
| Intl. Cl.: | C07C 5/03; C07C 5/10; |
| U.S. Cl.: | 585/266.; 585/250.; |
| Field of Search: | 250;266;268;259 |
| 5,302,681 | Apr., 1994 | McClain | 526/340 .2 |
Bae, Y. K., et al., "Production, Characterization, and Deposition of Carbon Clusters", Symposium on Clusters and Cluster Assembled Materials: Special Session on Buckminsterfullerene, Boston, Mass., Nov. 29, 1990, published in The Proceedings of the 1990 Meeting of the MRS Society, pp. 1-9.
Kratschmer, W., et al., "Solid C(60) : A New Form of Carbon", Nature, vol. 347, Sep. 27, 1990, pp. 354-357.
A process is described for carrying out the dehydrogenation or hydrogenation, including hydrogenolysis, of a hydrocarbon in the presence of one or more soluble fullerene catalysts which have been dissolved in the hydrocarbon (when the hydrocarbon is a liquid capable of dissolving the fullerene catalyst) or dissolved in a solvent which is also a solvent for the hydrocarbon (when the hydrocarbon either is not a liquid or is not a liquid which is a solvent for the fullerene catalyst). The use of a liquid catalyst, i.e., a dissolved fullerene catalyst, inhibits coking reactions to thereby inhibit formation of coke on a solid catalyst or catalyst support by elimination of nucleation points or growth regions for such coke formation.