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MOFs dual-metal adsorption material (Fe, Co)-BTC and preparation method thereof

A technology of adsorption material and bimetal, which is applied in the field of adsorption materials to achieve the effect of improving adsorption capacity, good repeatability and enhancing force

Inactive Publication Date: 2016-11-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, people still try to further improve the adsorption performance of this type of material by modification, such as Bandosz et al. (C.Petit, T.J.Bandosz, Synthesis, Characterization, and Ammonia Adsorption Properties of Mesoporous Metal-Organic Framework (MIL(Fe) )-Graphite Oxide Composites: Exploring the Limits of Materials Fabrication, Adv Funct Mater 21(2011) 2108-2117.) Tried to composite graphite oxide GO with MIL-100(Fe) to prepare MIL-100(Fe)@GO material, but failed

Method used

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  • MOFs dual-metal adsorption material (Fe, Co)-BTC and preparation method thereof
  • MOFs dual-metal adsorption material (Fe, Co)-BTC and preparation method thereof
  • MOFs dual-metal adsorption material (Fe, Co)-BTC and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Stir and mix reduced iron powder (10mmol), hexahydrate and cobalt nitrate (0.5mmol), m-tribenzoic acid (6.7mmol) and distilled water (45ml) to obtain a ternary water mixed solution, and then add HNO 3 Solution (0.4ml) and 40% NaF solution (0.8ml) were mixed to obtain the reaction mother liquor, and then the reaction mother liquor was placed in a reaction kettle and heated to 150°C for 16 hours to obtain a mixture containing the reaction product (Fe, Co)-BTC solution, cooled to room temperature (25°C). Add 25ml of DMF to the (Fe,Co)-BTC reaction product mixture obtained from the reaction, stir at room temperature for 2h, and use G 1 Funnel filtration removed most of the unreacted ligands, followed by drying to obtain crude solid (Fe,Co)-BTC material. Then the solid material was soaked in absolute ethanol, heat-treated at 100° C. for 24 hours, repeated twice, centrifuged, and dried to obtain a solid material. Then add 0.75g of ammonium fluoride and water, heat at 60°C f...

Embodiment 2

[0026] Stir and mix reduced iron powder (10mmol), hexahydrate and cobalt nitrate (1mmol), m-tribenzoic acid (7.2mmol) and distilled water (50ml) to obtain a ternary water mixed solution, and then add HNO 3solution (0.5ml) and 40% NaF solution (0.9ml) were mixed to obtain a mother liquor, and then the mother liquor was placed in a reaction kettle and heated to 160°C for 12 hours to obtain a mixed reaction product containing (Fe, Co)-BTC solution, cooled to room temperature (25°C). Add 30ml of DMF to the (Fe,Co)-BTC reaction product mixture obtained from the reaction, stir at room temperature for 2h, and use G 1 Funnel filtration removed most of the unreacted ligands, followed by drying to obtain crude solid (Fe,Co)-BTC material. Then the solid material was soaked in absolute ethanol, heat-treated at 120° C. for 16 hours, repeated twice, centrifuged, and dried to obtain a solid material. Then add 0.8 g of ammonium fluoride and water, heat at 80° C. for 8 hours, centrifuge, soa...

Embodiment 3

[0028] Stir and mix reduced iron powder (10mmol), hexahydrate, cobalt nitrate (2mmol), mestribenzoic acid (8mmol) and distilled water (55ml) to obtain a ternary water mixed solution, and then add HNO 3 solution (0.5ml) and 40% NaF solution (1ml) were mixed to obtain the reaction mother liquor, and then the reaction mother liquor was placed in a reaction kettle and heated to 180°C for 8 hours to obtain a mixed solution containing the reaction product (Fe, Co)-BTC , cooled to room temperature (25°C). Add 20ml of DMF to the (Fe,Co)-BTC reaction product mixture obtained from the reaction, stir at room temperature for 2h, and use G 1 Funnel filtration removed most of the unreacted ligands, followed by drying to obtain crude solid (Fe,Co)-BTC material. Then the solid material was soaked in absolute ethanol, heat-treated at 110° C. for 24 hours, repeated twice, centrifuged, and dried to obtain a solid material. Then add 0.85g of ammonium fluoride and 75ml of water, heat at 70°C for...

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Abstract

The invention belongs to the technical field of adsorption materials, and discloses a MOFs dual-metal adsorption material (Fe, Co)-BTC and a preparation method thereof. The preparation method comprises the following steps: mixing reduced iron powder, cobalt nitrate hexahydrate, mesitylenecarboxylic acid and water, uniformly stirring and mixing so as to obtain a ternary water mixed solution, adding a salpeter solution and a sodium fluoride solution, uniformly mixing so as to obtain reaction mother liquor, heating the reaction mother liquor to 150-180 DEG C, performing synthesis reaction for 8-16 hours, separating and purifying the reaction product, and performing vacuum activation, thereby obtaining the MOFs dual-metal adsorption material (Fe, Co)-BTC. Compared with a conventional Fe-BTC adsorbent, the MOFs dual-metal adsorption material (Fe, Co)-BTC disclosed by the invention enhances the action on CO2, and can remarkably increase the adsorption content of CO2.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, and in particular relates to a MOFs bimetallic adsorption material (Fe, Co)-BTC and a preparation method thereof. Background technique [0002] Greenhouse gas CO 2 The global warming caused by the large amount of emissions is the most serious global environmental problem that mankind has faced so far. Therefore, for CO 2 Capture and storage will be an important part of reducing and controlling CO 2 One of the effective means of emission. In recent years, a new class of porous MOFs materials, due to their ultra-high specific surface area and pore volume, tunable pore structure and surface properties, etc. 2 The capture field has a very broad application prospect. Millward et al. (A.R.Millward, O.M.Yaghi, Metal-organic frameworks with exceptionally high capacity forstorage of carbon dioxide at room temperature, J Am Chem Soc 127(2005) 17998-17999.) reported that MOF-177 was at 298...

Claims

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Application Information

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IPC IPC(8): B01J20/02B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01J20/0207B01J20/0229B01J20/28057B01D2257/504B01D2258/06B01J2220/42Y02C20/40
Inventor 李忠梅亮周欣肖静夏启斌
Owner SOUTH CHINA UNIV OF TECH
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