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Mesoporous silicon/organic matter composite carbon dioxide adsorbent, its preparation method and application

A carbon dioxide and adsorbent technology, applied in the field of composite carbon dioxide adsorbent materials, can solve problems such as unstable adsorption selectivity, achieve high adsorption selectivity, low operating cost, and easy desorption

Inactive Publication Date: 2011-12-21
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a composite carbon dioxide adsorbent and its preparation method in order to overcome the instability of existing adsorbents for multiple adsorption and desorption of carbon dioxide and the shortcomings of low adsorption selectivity

Method used

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  • Mesoporous silicon/organic matter composite carbon dioxide adsorbent, its preparation method and application
  • Mesoporous silicon/organic matter composite carbon dioxide adsorbent, its preparation method and application
  • Mesoporous silicon/organic matter composite carbon dioxide adsorbent, its preparation method and application

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Effect test

Embodiment 1

[0027] The preparation of embodiment 1 MCF (a) PEI composite material

[0028] Dissolve 0.5 g of polyethyleneimine in 5 g of methanol, stir, add 0.5 g of mesoporous material MCF (a) without removing the surfactant, continue stirring, and dry the mixed solution at 70°C. The composite adsorbent MCF(a)PEI was obtained.

Embodiment 2

[0029] The preparation of embodiment 2 MCF (c) PEI composite material

[0030] Dissolve 0.5 g of polyethyleneimine in 5 g of methanol, stir, add 0.5 g of mesoporous material MCF (c) which is burned to remove surfactant, continue stirring, and dry the mixed solution at 70°C. The composite adsorbent MCF(c)PEI was obtained.

Embodiment 3

[0031] The preparation of embodiment 3 MCF (p) PEI composite material

[0032] Dissolve 0.5g of polyethyleneimine in 5g of methanol, stir, add 0.5g of mesoporous material MCF(p) for extracting and removing part of the surfactant, continue stirring, and dry the mixed solution at 70°C. The composite adsorbent MCF(p)PEI was obtained.

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Abstract

The invention provides a composite carbon dioxide adsorbent, which includes a silicon-based mesoporous material and organic matter adsorbed in the pores of the mesoporous material and on the surface of the mesoporous material. The pore diameter of the silicon-based mesoporous material is 2-40 nanometers, and its weight percentage in the composite adsorbent is 18%-50%. The invention also provides a preparation method of the composite adsorbent and its application in carbon dioxide adsorption and separation. The preparation process of this kind of composite adsorbent is simple, and it has a large adsorption capacity and high adsorption selectivity for carbon dioxide. The characteristics of organic amines in the process of collecting carbon dioxide are volatile and easy to corrode equipment, which meets the requirements of industrial waste gas treatment.

Description

technical field [0001] The invention belongs to the field of adsorbents, in particular to composite carbon dioxide adsorbent materials. Background technique [0002] In recent years, climate change caused by the "greenhouse effect" has become a global environmental problem, and the greenhouse gas CO 2 The capture and separation of carbon dioxide have attracted more and more attention. [0003] A major source of carbon dioxide comes from the combustion of fossil fuels, and flue gas is one of the main ways to emit carbon dioxide, CO 2 The capture and separation methods mainly include solvent absorption method, solid adsorption method, membrane separation method, cryogenic fractionation method and so on. So far, the absorption method is still the most widely used CO 2 Separation method. Absorbents such as organic amine solution and inorganic alkali solution 2 The absorption selectivity is high, but the energy consumption is high, the cost is high, and the equipment is seve...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02C01B31/20C01B32/50
CPCY02C10/08Y02C20/40Y02P20/151
Inventor 胡军严威刘洪来周建海卞子君吴龙
Owner EAST CHINA UNIV OF SCI & TECH
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