Mary Jane Hale
Engineers in Lakewood, CO

6077401, Jun 20, 2000

Aug 15, 1994

8/290538

Clark L. Fields - Greeley CO
John Roland Pitts - Lakewood CO
David E. King - Lakewood CO
Mary Jane Hale - Golden CO
Carl E. Bingham - Denver CO
Allan A. Lewandowski - Evergreen CO

Midwest Research Institute - Kansas City MO

C01B 3102

20415747

A method of producing soot containing high amounts of fullerenes comprising: providing a primary concentrator capable of impingement of a concentrated beam of sunlight onto a carbon source to cause vaporization of carbon and subsequent formation of fullerenes, or providing a solar furnace having a primary concentrator with a focal point that concentrates a solar beam of sunlight; providing a reflective secondary concentrator having an entrance aperture and an exit aperture at the focal point of the solar furnace; providing a carbon source at the exit aperture of the secondary concentrator; supplying an inert gas over the carbon source to keep the secondary concentrator free from vaporized carbon; and impinging a concentrated beam of sunlight from the secondary concentrator on the carbon source to vaporize the carbon source into a soot containing high amounts of fullerenes.