Activated carbon with a special finishing, production and use thereof
AssigneesBlücher GmbH, Technische UniversitäT Dresden
InventorsBertram Bohringer, Ilsebill Eckle, Stefan Kaskel, Martin R. Lohe
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Abstract
The invention relates to a method for producing activated carbon provided and/or impregnated with a metal-organic framework substance (MOF material), the activated carbon being in particular in the form of discrete activated carbon particles, and preferably for producing an activated carbon with a reactive and/or catalytic action. The metal-organic framework substance is produced in situ in the pores and/or in the pore system of the activated carbon, starting from at least one metal precursor compound (MP) containing a metal and at least one ligand precursor (LP).
Claims21
A process for producing an activated carbon in the form of discrete particles of activated carbon comprising a porous system with a multitude of pores, which activated carbon is provided with catalytic properties via impregnation of the activated carbon particles with at least one metal-organic framework substance (MOF material);
- wherein the metal-organic framework substance is produced in situ in the pores of the activated carbon from at least one metal precursor (MP) compound, which comprises at least one metal, and from at least one ligand precursor (LP),
- wherein the metal precursor (MP) compound and the ligand precursor (LP) are introduced into the pores of the activated carbon, wherein the metal precursor (MP) compound and ligand precursor (LP) are each used, conjointly or separately from each other, in the form of at least one aqueous, aqueous-alcoholic or alcoholic solution or dispersion, wherein introducing the metal precursor (MP) compound and the ligand precursor (LP), conjointly or separately from each other, into the pores the activated carbon is effected by a step of impregnating the activated carbon with the at least one solution or dispersion of the metal precursor (MP) compound and of the ligand precursor (LP),
- wherein introducing the metal precursor (MP) compound and the ligand precursor (LP) is followed by at least a step of drying the activated carbon until the solvent or dispersant is at least essentially completely removed from the pores of the activated carbon, wherein the drying is carried out at temperatures in the range from 0° C. to 50° C.,
- wherein the steps of introducing the metal precursor (MP) compound and the ligand precursor (LP) and of drying the activated carbon are followed by at least one thermal post-treatment to convert the metal precursor (MP) compound together with the ligand precursor (LP) into a metal-organic framework substance (MOF-material), wherein the thermal post-treatment is carried out at a temperature in the range from 50° C. to 500° C., and wherein the metal-organic framework substance (MOF material) is present in crystalline form, wherein the particles of the metal-organic framework substance (MOF material) have an average particle size in the range from 0.1 nm to 500 nm.
An activated carbon in the form of discrete particles of activated carbon comprising a porous system with a multitude of pores, which activated carbon is provided with catalytic properties via impregnation of the activated carbon particles with at least one metal-organic framework substance (MOF material),
- wherein the metal-organic framework substance (MOF material) is present in crystalline form, wherein the particles of the metal-organic framework substance (MOF material) have an average particle size in the range from 0.1 nm to 500 nm.
Dependencies are inferred from the claim text.