Copper organic framework-silicon oxide porous composite material as well as preparation method and application thereof
A technology of organic frameworks and composite materials, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, other chemical processes, etc. Problems such as poor thermal stability, to achieve the effect of improving adsorption capacity
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Embodiment 1
[0030] Dissolve copper nitrate (4.5mmol) in 10ml deionized water, add trimesic acid (2.5mmol) in a mixed solution of ethanol (10ml) and DMF (5ml), and then add tetraethyl orthosilicate (TEOS, 5mmol ) Stirring at room temperature, where Cu:SiO in the mixed solution 2 :H 3 BTC=1.1:1.0:0.5; Add cetyltrimethylammonium bromide (CTAB, 3.5mmol) and ethanol aqueous solution of citric acid (CA, 0.6g) to the mixed solution after stirring, and then continue to stir at room temperature , the reaction temperature of the solid mixture in the high-temperature and high-pressure reactor is 140°C, and the reaction time is 24h; after cooling, it is filtered and washed, and the solid mixture particles are dried in a vacuum oven at 100°C for 12h to obtain CuMOF-oxidized Silicon porous composites. The specific surface area is 836m 2 g -1 , the micropore volume is 0.94cm 3 g -1 .
[0031] figure 1 The XRD pattern of the CuMOF-silicon oxide porous composite material prepared for the embodime...
Embodiment 2
[0034] Dissolve copper chloride (4.5mmol) in 10ml of deionized water, add trimesic acid (2.5mmol) in a mixed solution of ethanol (10ml) and DMF (5ml), and then add ethyl orthosilicate (TEOS, 10mmol) stirring at room temperature, wherein Cu:SiO in the mixed solution 2 :H 3 BTC=1.1:2.0:0.5;
[0035] Add octadecyltrimethylammonium bromide (3.5mmol) and tartaric acid (3.5mmol) ethanol aqueous solution to the mixed solution after the aforementioned stirring, then continue to stir at room temperature, and the temperature of the reaction of the solid mixture in the high-temperature and high-pressure reactor is The temperature was 120°C, and the reaction time was 12h; after cooling, suction filtration and washing were performed, and the solid mixture particles were dried in a vacuum oven at 100°C for 24h to obtain CuMOF-silicon oxide porous composite materials. The specific surface area is 642m 2 g -1 , the micropore volume is 1.05cm 3 g -1 .
[0036] figure 2 The specific su...
Embodiment 3
[0039] Dissolve copper sulfate (4.5mmol) in 10ml of deionized water, add trimesic acid (2.5mmol) in a mixed solution of ethanol (10ml) and DMF (5ml), and then add ethyl orthosilicate (TEOS, 5mmol) ) Stirring at room temperature, where Cu:SiO in the mixed solution 2 :H 3 BTC=1.1:3.0:0.5;
[0040] Add cetyltrimethylammonium chloride (3.5mmol) and malic acid (7mmol) ethanol aqueous solution to the mixed solution after the aforementioned stirring, then continue stirring at room temperature, and the reaction temperature of the solid mixture in the high-temperature and high-pressure reactor is 120°C, the reaction time was 48h; after cooling, suction filtration and washing were performed, and the solid mixture particles were dried in a vacuum oven at 80°C for 24h to obtain CuMOF-silicon oxide porous composite materials. The specific surface area is 573m 2 g -1 , the micropore volume is 1.12cm 3 g -1 .
[0041] The CuMOF-silicon oxide porous composite material was placed in th...
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