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
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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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