Method for producing an adsorbent from organometallic framework structures (MOF)

An organic framework and adsorbent technology, which is used in the field of preparing adsorbents made of metal-organic framework structures, can solve problems such as undesired material properties, and achieve the effects of easy continuous production, high crystallinity, and cost savings

Inactive Publication Date: 2017-05-17
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The corresponding syntheses are not suitable for coating methods, since particles of linker compounds are uncontrolled incorporation in the layer, resulting in undesired material properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0049] 21.25mmol (4.48g) of trimesic acid in 160ml of dimethyl sulfoxide solution was heated to 90°C in a 250ml three-necked flask, and then 32mmol (12.96g) of Fe(NO 3 ) 3 9H 2 32 mL of an aqueous solution of O at room temperature. The yellow-green solution was refluxed for 24 hours with stirring (internal temperature: 131° C.).

[0050] Centrifuge the resulting solid and pour the still hot supernatant solution into 1 L of water to avoid potentially explosive Fe(NO 3 ) 3 ·6Me 2 SO precipitates as a by-product. After washing (with DMF [90° C., 5 h], ethanol [60° C., overnight] and water [90° C., 5 h]), 4.49 g of a maroon solid were obtained. The single crystal phase was determined to be MIL-100 by X-ray powder diffraction.

Embodiment approach 2

[0052] The process was carried out as in Embodiment 1, but the reflux was only continued for 45 minutes. The brown and slightly cloudy liquid thus obtained was placed in a double-walled container. The outer wall is thermostatically controlled at a temperature of 45°C.

[0053] Two pieces of 1.4301 stainless steel (1.4016 or aluminum can also be used) measuring 50 x 50 x 1.5 mm are then rubbed, degreased with acetone and fixed on a specially prepared heating element provided with counter electrodes each spaced 10 mm apart . The blank surface of the sheet is 15cm on each side 2 . The test structure is immersed in the cooled original solution and the heating power (typically 210W) is controlled so that the temperature directly below the surface of the sheet to be coated is 135°C (measured by a thermoelectric element inserted in the boring) ). Then set the voltage so that it achieves a current intensity of 100mA at the beginning of the test (current density: 10A / dm 2 ). Aft...

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Abstract

The invention relates to a method for producing an adsorbent from organometallic framework structures (MOF), in which at least one metal salt is converted together with at least one organic ligand. The conversion occurs at a temperature of greater than 100 degrees centigrade in a solvent mixture which contains DMSO and water. The invention further relates to an absorbent produced by means of the method according to the invention and to a substrate coated with such an absorbent and application possibilities of such an absorbent or substrate.

Description

technical field [0001] The present invention relates to a process for the preparation of adsorbents made of metal-organic frameworks (MOFs), in which at least one metal salt is transformed with at least one organic ligand. This transformation is performed at a temperature greater than 100°C in a solvent mixture comprising DMSO and water. Furthermore, the invention relates to a sorbent or a substrate coated with the sorbent prepared by the method according to the invention, and also to possible uses of the sorbent or the substrate. Background technique [0002] Metal-organic networks (metal-organic frameworks, MOFs) are microporous materials. At the molecular level, they consist of clusters of cationic metal ions (secondary building units, SBUs) bridged by organic anions (linkers) that form multivalent coordinate bonds. Due to the highly symmetric crystalline architecture of the lattice structure, and the fact that the porosity actually arises at the molecular level, MOFs a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01J20/32C01B37/00C07F15/02
CPCB01J20/226B01J20/3085B01J20/3204B01J20/3236C01B37/00C07F15/025B01D2253/204B01J31/1691Y02P20/582C07F15/02C07C51/418C07C63/307C07F19/005
Inventor 费力克斯·耶雷米亚斯斯特凡·亨宁格
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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