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MOFs based carbon dioxide adsorbent, preparation method and application thereof

A carbon dioxide and adsorbent technology, applied in the field of MOFs-based carbon dioxide adsorbent and its preparation, can solve the problems of weak adsorption and separation ability, and achieve the effect of strong adsorption ability, overcoming volatile and non-volatile

Inactive Publication Date: 2014-09-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, when MOFs are used as carbon dioxide adsorbents, they need to be carried out at medium and high pressures, while CO 2 The adsorption and separation abilities are weak

Method used

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  • MOFs based carbon dioxide adsorbent, preparation method and application thereof
  • MOFs based carbon dioxide adsorbent, preparation method and application thereof
  • MOFs based carbon dioxide adsorbent, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Dissolve 1g of tetraethylenepentamine in 100ml of absolute ethanol, stir for 0.5h, add 1g of MOF-74, stir for 4h, put the sample in an oven, dry at 80°C to remove ethanol, and then dry at 105°C, denoted as M1. In the obtained sample, the content of organic amine was 50 wt%. The adsorption data was measured by using a fixed bed, the adsorption temperature was 70°C, and the simulated gas flow rate was 50ml / min. The results are shown in Table 1.

Embodiment 2

[0048] Dissolve 1g of tetraethylenepentamine in 100ml of absolute ethanol, stir for 0.5h, add 1g of ZIF-8, stir for 4h, put the sample in an oven, dry at 80°C to remove ethanol, and then dry at 105°C, denoted as M2 . In the obtained sample, the content of organic amine was 50 wt%. The test conditions are the same as in Example 1, and the results are shown in Table 1.

Embodiment 3

[0050] Dissolve 1g of tetraethylenepentamine in 100ml of absolute ethanol, stir for 0.5h, add 1g of MIL-101, stir for 4h, put the sample in an oven, dry at 80°C to remove ethanol, and then dry at 105°C, record as M3. In the obtained sample, the content of organic amine was 50 wt%. The adsorption capacity data was determined by using a fixed bed, and the results are shown in Table 1. When the adsorption temperature was adjusted to 20, 30, 40, 50, 60, 70, and 80°C, and the simulated gas flow rate was 50ml / min, the adsorption results of M3 are shown in Table 2. Adjust the adsorption temperature to 50°C, the simulated gas flow rate to 50ml / min; the desorption temperature to 150°C, the nitrogen purge flow rate to 50ml / min, and the desorption time to 30min. The cycle adsorption results of M3 are shown in Table 3.

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Abstract

The invention discloses an MOFs (metal-organic frameworks) based carbon dioxide adsorbent, which includes MOFs and organic amine loaded in the pore channels and on the surface of MOFs. The mass ratio of the MOFs to the organic amine is 0.1-10:1. The MOFs based carbon dioxide adsorbent provided by the invention realizes the combined action of physical adsorption and chemical adsorption and can adsorb and store carbon dioxide at medium and low temperature, and regeneration and reutilization of the adsorbent can be realized under certain condition. The MOFs based carbon dioxide adsorbent has good adsorption capacity, high selectivity and cycling stability on carbon dioxide, and can overcome the disadvantages of easy volatilization and easy corrosion of equipment in organic amine so as to meet the industrial processing requirements. The invention also discloses a preparation method of the MOFs based carbon dioxide adsorbent and application of the adsorbent in adsorption of carbon dioxide in flue gas.

Description

technical field [0001] The invention relates to the field of preparation of carbon dioxide adsorbents, in particular to a MOFs-based carbon dioxide adsorbent and its preparation method and application. Background technique [0002] In recent years, the increasing use of fossil fuels has resulted in CO 2 Emissions continue to increase. Over the past 250 years, atmospheric CO 2 The concentration increased from 280ppm before the industrial revolution to 390ppm in 2010, especially in the past 50 years. Its excessive emissions have caused global warming, seriously affecting the earth's ecological environment and climate change. Therefore, CO 2 Emission reduction has also become an urgent issue. The development of low-carbon new energy and the improvement of existing energy efficiency are both CO 2 effective way to reduce emissions, while CO 2 Capture and separation technology is undoubtedly an effective way to reduce CO 2 emission technology. [0003] Carbon dioxide capt...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02
CPCY02C20/40
Inventor 施耀刘清何奕
Owner ZHEJIANG UNIV
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