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US 7,842,827 B2Granted
Mesoporous metal-organic framework
AssigneeBASF SE
InventorsMarkus Schubert, Ulrich Mueller, Hendrick Mattenheimer, Markus Tonigold
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AssigneeBASF SE
InventorsMarkus Schubert, Ulrich Mueller, Hendrick Mattenheimer, Markus Tonigold
Estimating the term…
The present invention relates to a porous metal-organic framework comprising AlIII and at least one at least bidentate compound, wherein the at least one at least bidentate organic compound is a six-membered aromatic hydrocarbon ring A in which one or more ring carbons may be replaced by nitrogen and which has three substituents X and optionally one or more substituents selected from the group consisting of R, NRR′, OR, SR, F, Cl and Br, where R, R′ are each, independently of one another, hydrogen, methyl which may optionally be substituted by one or more fluorine atoms or ethyl which may optionally be substituted by one or more fluorine atoms and each X is, independently of the others, C(═O)O−, C(═S)O−, C(═O)S−, C(═S)S− or a protonated form thereof. The invention further provides a process for preparing it and provides for the use of the new porous metal-organic framework.
A porous metal-organic framework comprising at least one at least bidentate organic compound coordinated to at least one metal ion, wherein the at least one metal ion is AlIII and the at least one at least bidentate organic compound is a six-membered aromatic hydrocarbon ring A in which one or more ring carbons may be replaced by nitrogen and which has three substituents X and optionally one or more substituents selected from the group consisting of R, NRR′, OR, SR, F, Cl and Br, where R, R′ are each, independently of one another, hydrogen, methyl which may optionally be substituted by one or more fluorine atoms or ethyl which may optionally be substituted by one or more fluorine atoms and each X is, independently of the others, C(═O)O−, C(═S)O−, C(═O)S−, C(═S)S− or a protonated form thereof, characterized in that the metal-organic framework in powder has a specific surface area determined by the Langmuir method of at least 800 m2/g.
Dependencies are inferred from the claim text.
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Aluminium compounds: without C-aluminium linkages
Containing metals, e.g. organo-metallic compounds, coordination complexes: coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic…
Processes for preparing, regenerating, or reactivating: chemical treatments not covered by groups B01J20/3007 - B01J20/3078
Reversible storage of hydrogen, e.g. by hydrogen getters or electrodes: characterised by the uptaking media; Treatment thereof
About 1 year of term left · ends 8 Nov 2027 (estimated)
This application is a 371 of PCT/EP06/065346, filed on Aug. 16, 2006, and claims priority to German Patent Application No. 10 2005 039 654.2, filed on Aug. 22, 2005.
The present invention relates to a porous metal-organic framework and a process for preparing it and its use.
Porous metal-organic frameworks are known in the prior art.
FIG. 1 shows the X-ray diffraction pattern (XRD) of the compound of Example 1.
FIG. 2 shows the X-ray diffraction pattern (XRD) of the compound of Example 2.
FIG. 3 shows a transmission electron micrograph of the compound of Example 2.
This object is achieved by a porous metal-organic framework comprising at least one at least bidentate organic compound coordinated to at least one metal ion, wherein the at least one metal ion is AlIII and the at least one at least bidentate organic compound is a six-membered aromatic hydrocarbon ring A in which one or more ring carbons may be replaced by nitrogen and which has three substituents X and optionally one or more substituents selected from the group consisting of R, NRR′, OR, SR, F, Cl and Br, where R, R′ are each, independently of one another, hydrogen, methyl which may optionally be substituted by one or more fluorine atoms or ethyl which may optionally be substituted by one or more fluorine atoms and each X is, independently of the others, C(═O)O−, C(═S)O−, C(═O)S−, C(═S)S− or a protonated form thereof.
It has been found that frameworks as described above have a comparatively high proportion of large-volume pores (mesopores) and likewise have comparatively high specific surface areas, which leads to advantages in the applications described below. This is particularly surprising since these properties are not retained when aluminum is replaced by its analogue indium in the same group of the Periodic Table or an organic compound substituted by only two groups X is used in place of the organic compound substituted by three groups X for building up a metal-organic framework. This is particularly true when the organic compound is a benzenetricarboxylate.
In addition, the X-ray diffraction patterns of the framework of the invention barely display the sharp signals in the range from 5 to 30°(2Θ), in particular from 5 to 12°, characteristic of the abovementioned frameworks known from the prior art.