Carbon-based sorbent for gas storage, and method for preparation thereof
AssigneeAdvanced Fuel Research, Inc.
InventorsMarek A. Wójtowicz, Eric Rubenstein, Michael A. Serio
Life of this patent
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Abstract
The method enables control over carbon pore structure to provide sorbents that are particularly advantageous for the adsorption of specific gases. It involves preparation of a sorbent precursor material, carbonization of the precursor material, and, usually, activation of the carbonized material. The resultant material is subjected to heat treatment and/or to surface conditioning by a reducing gas at elevated temperatures.
Claims26
A method for the production of carbon-based sorbents for gas storage, comprising the following steps, carried out in the order set forth:
- a) providing a sorbent precursor material that is subject to carbonization and activation;
- b) effecting carbonization of said sorbent precursor material by heat-treatment in a non-oxidizing atmosphere;
- c) effecting activation of the carbonized sorbent precursor material using any suitable method;
- d) effecting heat-treatment of said carbonized sorbent precursor material at a temperature in the range of about 800° C. to about 2,000° C.;
- and
- e) conditioning the surface of said heat-treated sorbent precursor material by contacting said surface with a reducing gas.
A method for the production of carbon-based sorbents for gas storage, comprising the following steps, carried out in the order set forth:
- a) providing a sorbent precursor material that is subject to carbonization and activation;
- b) effecting carbonization of said sorbent precursor material by heat-treatment in a non-oxidizing atmospheres;
- c) effecting activation of the carbonized sorbent precursor material using any suitable method;
- and
- d) effecting heat-treatment of said carbonized sorbent precursor material at a temperature in the range of about 800° C. to about 2,000° C.
A method for the production of carbon-based sorbents for gas storage, comprising the following steps, carried out in the order set forth:
- a) providing a sorbent precursor material that is subject to carbonization and activation;
- b) effecting carbonization of said sorbent precursor material by heat-treatment in a non-oxidizing atmosphere;
- c) effecting activation of the carbonized sorbent precursor material using any suitable method;
- and
- d) conditioning a surface of said heat-treated sorbent precursor material by contacting said surface with a reducing gas.
A method for the production of carbon-based sorbents for gas storage, comprising the following steps, carried out in the order set forth:
- (a) providing a sorbent precursor material that is subject to carbonization;
- (b) effecting carbonization of said sorbent precursor material by heat-treatment in a non-oxidizing atmosphere;
- (c) effecting heat-treatment of said carbonized sorbent precursor material at a temperature in the range of about 800° C. to about 2,000° C.;
- and
- (d) conditioning a surface of said heat-treated sorbent precursor material by contacting said surface with a reducing gas.
Dependencies are inferred from the claim text.