Production of fullerenic soot in flames
AssigneeMassachusetts Institute of Technology
InventorsJack B. Howard, John B. Vander Sande, K. Das Chowdhury
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Abstract
A method for the production of fullerenic nanostructures is described in which unsaturated hydrocarbon fuel and oxygen are combusted in a burner chamber at a sub-atmospheric pressure, thereby establishing a flame. The condensibles of the flame are collected at a post-flame location. The condensibles contain fullerenic nanostructures, such as single and nested nanotubes, single and nested nanoparticles and giant fullerenes. The method of producing fullerenic soot from flames is also described.
Claims14
A method for preparing soot, comprising the steps of:
- combusting an unsaturated hydrocarbon fuel and an oxygen source in a non-arc-discharge burner chamber, thereby establishing a flame;
- and
- collecting condensibles of the flame at a post-flame location, the condensibles comprising fullerenes, fullerenic nanostructures and soot;
- and
- separating the soot from the condensibles, wherein the soot comprises at least 50 wt % fullerenic carbon sheets.
A method for preparing soot, comprising the steps of:
- combusting an unsaturated hydrocarbon fuel and an oxygen source in a non-arc discharge burner chamber, thereby establishing a flame;
- and
- collecting condensibles of the flame at a post-flame location;
- and
- confirming the presence of fullerenic carbon sheets in the condensibles, wherein the condensibles comprise at least 50 wt % fullerenic carbon sheets.
A method for preparing soot, comprising the steps of:
- combusting an unsaturated hydrocarbon fuel and an oxygen source in a non-arc discharge burner chamber at a chamber pressure of about atmospheric, thereby establishing a flame;
- and
- collecting condensibles of the flame at a post-flame location, wherein the condensibles comprise at least 50 wt % fullerenic carbon sheets.
A method for preparing soot, comprising the steps of:
- combusting an unsaturated hydrocarbon fuel and an oxygen source in a non-arc-discharge burner chamber, thereby establishing a flame, the flame conditions sufficient to produce at least 90 wt % fullerenic carbon sheets;
- and
- collecting condensibles of the flame at a post-flame location, wherein the condensibles comprise at least 90 wt % fullerenic carbon sheets.
A soot comprising greater than 50 wt % fullerenic carbon sheets.
A soot comprising greater than 90 wt % fullerenic carbon sheets.
Dependencies are inferred from the claim text.