Method of making activated carbon derived from pitches
AssigneeCorning Incorporated
InventorsY. Lisa Peng, Jimmie L. Williams
Life of this patent
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Abstract
A method of making activated carbon of various pore size distributions involves an providing oxidized pitch, carbonizing the pitch when the softening point of the pitch is less than about 250° C., and activating the pitch to produce activated carbon. A catalyst metal can be included with the pitch to produce mesoporosity in the activated carbon.
Claims15
A method of making activated carbon, the method comprising:
- a) providing an oxidized pitch and adding thereto a catalyst metal in an amount of 2% to about 3%;
- b) carbonizing the pitch when the softening point of the pitch is less than about 250° C.;
- and
- c) activating the pitch to produce activated carbon.
A method of making activated carbon supported onto a monolith substrate, the method comprising:
- a) providing a monolith substrate;
- b) providing a pitch;
- c) coating the monolith substrate with the pitch;
- d) oxidizing the pitch;
- e) carbonizing the pitch when the softening point of the pitch is less than about 250° C.;
- and
- f) activating the pitch to produce activated carbon.
A method of making activated carbon, the method comprising:
- a) providing an oxidized pitch which includes a catalyst metal, wherein the catalyst metal is a rare earth metal organic compound;
- b) carbonizing the pitch when the softening point of the pitch is less than about 250° C.;
- and
- c) activating the pitch to produce activated carbon.
A method of clam 10 wherein the catalyst metal is provided as a rare earth metal organic compound selected from the group consisting of yttrium cyclopentadienyl, yttrium acetylacetonate, ytterbium acetylacetonate, and mixtures thereof.
A method of making activated carbon, the method comprising:
- a) providing an oxidized pitch, wherein the pitch has a softening point less than about 40° C. and adding thereto a catalyst metal in an amount of 2% to about 3%;
- b) carbonizing the pitch when the softening point of the pitch is less than about 250° C.;
- and
- c) activating the pitch to produce activated carbon.
A method of making activated carbon, the method comprising:
- a) providing an oxidized pitch and adding thereto a catalyst metal in an amount of 2% to about 3%, wherein the catalyst is a compound selected from the group consisting of alkali metal, alkaline earth metal, transition metal, rare earth metal, noble metal, and mixtures thereof;
- b) carbonizing the pitch when the softening point of the pitch is less than about 250° C.;
- and
- c) activating the pitch to produce activated carbon,
- d) coating the pitch onto a monolithic substrate, wherein the substrate is a honeycomb.
Dependencies are inferred from the claim text.