Method for the capture of carbon dioxide using oxyfluoride physisorbents
AssigneeResearch Triangle Institute
InventorsDaniel O'Nolan, Mustapha Soukri
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Abstract
Metal-organic frameworks (MOFs) comprising square arrays of nickel cationic centers linked by N-donor organic ligands and pillared with tungsten oxyfluoride anion are described. In an exemplary MOF, the N-donor organic ligands are pyrazine and the MOF has a pore size of less than about 7 angstroms. Methods of using the MOF to selectively capture carbon dioxide, e.g., from gas compositions comprising nitrogen and/or methane, are also described.
Claims14
A metal-organic framework (MOF) comprising a plurality of molecular building units having the formula [Ni(L)2(WO2F4)], wherein each L is a bidentate organic ligand comprising two N-donor functional groups.
A method of removing carbon dioxide (CO2) from a fluid, the method comprising:
- (a) providing a metal-organic framework (MOF), the MOF comprising a plurality of molecular building units having the formula [Ni(L)2(WO2F4)], wherein each L is a bidentate organic ligand comprising two N-donor functional groups;
- (b) contacting the MOF with a fluid composition comprising CO2 and one or more other chemical species;
- and
- (c) selectively capturing the CO2 from the fluid composition.
Dependencies are inferred from the claim text.