Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Patent
1994-05-05
1997-09-02
Lewis, Michael
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
423DIG39, 423461, C01B 3100
Patent
active
056628765
ABSTRACT:
A low-cost and facile method of purifying fullerenes to obtain a preparation enriched in a fullerene of selected molecular weight using activated carbon involves adding a fullarena mixture to the top end of a column comprising activated carbon, passing a solvent in which the selected molecular weight fullerene is soluble through the column, and recovering a fraction enriched in the selected molecular weight fullerene from the bottom end of the column. In addition to activated carbon, the column may further comprise silica gel, diatomaceous earth, or other materials which aid in column packing and eluent flow. The invention also provides for preparation of gram quantities of pure C.sub.60 and C.sub.70 fullerenes after a single column pass.
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Bedworth Peter V.
Scrivens Walter A.
Tour James M.
DiMauro Peter T.
Lewis Michael
University of South Carolina
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