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A kind of amino acid@cu-btc composite adsorbent and its preparation method

A compound adsorption and amino acid technology, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., can solve the problems of no adsorption performance, etc., and achieve the effect of short reaction time, good repeatability and high CO2 adsorption capacity

Active Publication Date: 2020-05-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Zhang et al. used the vapor deposition technique to coat the surface of Cu-BTC with hydrophobic silane at 235°C (W. Zhang, Y. Hu, J. Ge, H. L. Jiang, S. H. Yu, A facile and general coating approach to moisture / water-resistant metal-organic frameworks with intact porosity, Journal of the American Chemical Society, 136 (2014) 16978-16981), after the material modified by PDMS was in contact with air with a relative humidity of 55% for 1 day, it still maintained Good stability, but no adsorption properties reported

Method used

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  • A kind of amino acid@cu-btc composite adsorbent and its preparation method
  • A kind of amino acid@cu-btc composite adsorbent and its preparation method
  • A kind of amino acid@cu-btc composite adsorbent and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Nano ZnO (3.6mmol, n 1 ) dissolved in deionized water (8ml, n 2 ), after ultrasonic dispersion for 10min, DMF (16ml, n 3 ), to obtain a ZnO nanoslurry solution; the Cu(NO 3 ) 2 ·3H 2 O(7.2mmol, n 4 ) and Gly (2.16mmol, n 5 ) dissolved in deionized water (8ml, n 6 ), to get Cu(NO 3 ) 2 and Gly mixture; Trimellitic acid (3.2mmol, n 7 ) dissolved in ethanol (16ml, n 8 ), obtain trimesic acid solution; wherein the consumption ratio of various substances is (n 2 +n 6 ):n 3 :n 8 = 1:1:1; n 1 :n 4 =1:2.

[0031] (2) Cu(NO) obtained in step (1) 3 ) 2 Add the mixed solution of ZnO and Gly into the ZnO nano slurry solution, stir and mix evenly, then add trimesic acid solution, stir and react for 5-10 minutes to obtain a blue solution containing the reaction product, and pass the solution through an organic filter with an average pore size of 0.45 μm After filtration, the solid product was sequentially soaked in methanol, centrifuged and dried to obtain a bl...

Embodiment 2

[0034] (1) Nano ZnO (5.76mmol, n 1 ) dissolved in deionized water (8ml, n 2 ), after ultrasonic dispersion for 10min, DMF (19ml, n 3 ), to obtain a ZnO nanoslurry solution; the Cu(NO 3 ) 2 ·3H 2 O(7.2mmol, n 4 ) and β-Ala (2.88mmol, n 5 ) dissolved in deionized water (8ml.n 6 ), to get Cu(NO 3 ) 2 and β-Ala mixture; Trimellitic acid (3.2mmol, n 7 ) dissolved in ethanol (16ml, n 8 ), obtain trimesic acid solution; wherein the consumption ratio of various substances is (n 2 +n 6 ):n 3 :n 8 =1:1.2:1; n1:n4=1:1.25.

[0035] (2) Cu(NO) obtained in step (1) 3 ) 2 Add the mixed liquid with β-Ala to the ZnO nano slurry solution, stir and mix evenly, then add trimesic acid solution, stir and react for 5-10min to obtain a blue solution containing the reaction product, and use the organic solution with an average pore size of 0.45μm filter membrane, and the solid product was sequentially soaked in methanol, centrifuged and dried to obtain a blue solid powder.

[0036] (...

Embodiment 3

[0038] Nano ZnO (3.6mmol, n 1 ) dissolved in deionized water (8ml, n 2 ), after ultrasonic dispersion for 10min, DMF (16ml, n 3 ), to obtain a ZnO nanoslurry solution; the Cu(NO 3 ) 2 ·3H 2 O(7.2mmol, n 4 ) and GABA (2.88mmol, n 5 ) dissolved in deionized water (8ml, n 6 ), to get Cu(NO 3 ) 2 and GABA mixture; Trimellitic acid (3.2mmol, n 7 ) dissolved in ethanol (21ml, n 8 ), obtain trimesic acid solution; wherein the consumption ratio of various substances is (n 2 +n 6 ):n 3 :n 8 = 1:1:1.3; n 1 :n 4 =1:2.

[0039] (2) Cu(NO) obtained in step (1) 3 ) 2 Add the mixed solution of GABA and ZnO into the nano-slurry ZnO solution, stir and mix evenly, then add trimesic acid solution, stir and react for 5-10 minutes to obtain a blue solution containing the reaction product, and pass the solution through an organic filter with an average pore size of 0.45 μm After filtration, the solid product was sequentially soaked in methanol, centrifuged and dried to obtain a b...

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Abstract

The invention belongs to the technical field of adsorbing materials, and discloses an amino acid @Cu-BTC composite adsorbent and a preparing method thereof. Nano ZnO is added into deionized water, andafter ultrasonic dispersion, DMF is added to obtain a ZnO nano slurry solution; Cu(NO3)2.3H2O and amino acid are dissolved into the deionized water to obtain mixed liquid of Cu(NO3)2 and amino acid;trimesic acid is dissolved into ethyl alcohol to obtain a trimesic acid solution; the mixed liquid of Cu(NO3)2 and amino acid is added into the ZnO nano slurry solution to be stirred and uniformly mixed, then the trimesic acid solution is added to be subjected to a reaction, and the obtained solid product is subjected to vacuum activation to obtain the amino acid @Cu-BTC composite adsorbent. The amino acid @Cu-BTC composite adsorbent has superior vapor stability and also has a high CO2 adsorbing capability.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, and in particular relates to an amino acid@Cu-BTC composite adsorbent and a preparation method thereof. Background technique [0002] With the development of global industrialization, a large amount of CO 2 It has been discharged into the atmosphere, causing environmental problems such as greenhouse effect, global climate anomaly, sea level rise, frequent natural disasters and land desertification, and has had a serious impact on the survival of human beings and the development of society around the world. Therefore, for CO 2 Effective capture and reduction of its emissions have become one of the hot topics for scholars today. Currently capturing CO 2 The technologies that can be used mainly include low-temperature distillation, membrane separation, chemical absorption, physical adsorption, and catalytic combustion. The physical adsorption method is considered to be the most prom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30
CPCB01J20/0237B01J20/0277B01J20/22B01J20/28016
Inventor 李忠吴玉芳周欣肖静夏启斌
Owner SOUTH CHINA UNIV OF TECH
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