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Process for the synthesis of fullerenes

  • US 5,395,496 A
  • Filed: 04/23/1993
  • Issued: 03/07/1995
  • Est. Priority Date: 04/07/1992
  • Status: Expired due to Term
First Claim
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1. A process for the synthesis of fullerenes which comprises:

  • a) feeding a plasma forming gas into a reactor and generating a plasma of said plasma forming gas within said reactor in the form of a plasma flame, said plasma forming gas consisting essentially of a carbon and halogen containing gas selected from the group-consisting of a carbon halide gas, a mixture of a carbon halide gas and a halogen gas, a mixture of a hydrocarbon gas and a halogen gas, a mixture of a hydrocarbon gas and a carbon halide gas, and a mixture of a hydrocarbon gas, a carbon halide gas and a halogen gas,b) dissociating said plasma forming gas in said plasma flame into carbon and halogen atoms produced in the form of a cloud; and

    thenc) allowing substantially all of the carbon atoms in said cloud to recombine and condense as soot on a surface outside of said plasma flame, said soot containing the fullerenes being formed from essentially only the carbon and halogen containing gas.

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