Functionalized carbon sorbent and process for selective capture of preselected metals
OwnerGlen E. Fryxell, William D. Samuelsinventors
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Abstract
A composition and process are described that provide for selective capture of targeted materials, including metals and chemical targets. The composition includes an activated carbon scaffold that is chemically modified to include ligands with a high affinity for selective capture of metals and chemical targets. The invention finds use, e.g., as heavy metal sorbents, as catalyst supports, in analytical applications such as ion chromatography, and in devices such as analytical instruments and chemical sensors.
Claims20
A composition, characterized by:
- a scaffold of activated carbon that includes a preselected nucleofugic (leaving) group that is chemically attached to a preselected chemical group of said scaffold.
A method of making a sorbent composition, comprising the steps of:
- chemically attaching a preselected nucleofugic group to a preselected chemical group of an activated carbon scaffold;
- and
- displacing said nucleofugic group and chemically attaching a preselected ligand to said scaffold that provides for selective capture of a preselected metal(s) or chemical(s).
A method of using a sorbent composition, characterized by the step of:
- chemically binding a preselected metal(s) or chemical present in a fluid to said sorbent composition comprised of an activated carbon scaffold that is chemically modified to include a preselected ligand, said ligand attached to said scaffold provides selective capture of said preselected metal(s) or chemical from said fluid.
Dependencies are inferred from the claim text.