Halloysite carbon dioxide adsorbent and preparation method thereof

A carbon dioxide, halloysite-based technology, applied in chemical instruments and methods, through adsorption, separation methods, etc., can solve the problems of poor selectivity of adsorbents and sensitivity to temperature changes, and achieve strong adsorption capacity, strong gas adsorption capacity, strong Effect of ion exchange adsorption capacity

Inactive Publication Date: 2012-08-01
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The solid-state adsorption method is convenient and fast, but has the disadvantages of p...

Method used

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  • Halloysite carbon dioxide adsorbent and preparation method thereof
  • Halloysite carbon dioxide adsorbent and preparation method thereof
  • Halloysite carbon dioxide adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 10g of halloysite nanotubes and 300ml of methanol into a 500ml clean and dry three-necked bottle and mechanically stir to obtain a methanol dispersion of halloysite nanotubes, and then weigh 5g of polyethyleneimine (Mw=17000) and dissolve it in 60ml of methanol , obtain a methanol solution of polyethyleneimine, and then add it dropwise to the methanol dispersion of halloysite nanotubes while stirring, continue stirring for 3 hours, then stop stirring, and evaporate the methanol solvent by rotary evaporation at 50 ° C to obtain block Solid, finely ground, dried at 80°C and stored in vacuum to obtain halloysite-based carbon dioxide adsorbent. The specific particle size distribution diagram, SEM image and isoelectric point test diagram of the rockite nanotubes are shown in figure 1 , figure 2 and image 3 .

Embodiment 2

[0033]Add 10g of halloysite nanotubes and 300ml of ethanol into a 500ml clean and dry three-necked bottle and mechanically stir to obtain an ethanol dispersion of halloysite nanotubes, and then weigh 8g of polyacrylamide (Mw=1 million) and dissolve it in 20ml of methanol , to obtain an alcohol solution of polyacrylamide, and then add it to the methanol dispersion of halloysite nanotubes under ultrasonication, continue stirring for a period of time until the system is uniformly mixed, then stop stirring, and vacuum dry at 70°C to remove alcohol Solvent, to obtain blocky solid, grind it at 90°C, dry it and store it in vacuum to obtain halloysite-based carbon dioxide adsorbent.

Embodiment 3

[0035] Add 20g of halloysite nanotubes and 300ml of methanol into a 500ml clean and dry three-necked bottle and mechanically stir to obtain a methanol dispersion of halloysite nanotubes, and then weigh 5g of polyethyleneimine (Mw=900) and dissolve it in 60ml of ethanol , prepare the ethanol solution of polyethyleneimine, then add the ethanol solution of polyethyleneimine into the methanol solution of halloysite nanotubes while stirring, continue stirring for 3 hours, stop stirring, and evaporate the alcohol by rotary evaporation at 70 °C Solvent, to obtain blocky solid, grind it at 100°C, dry it and store it in vacuum to obtain halloysite-based carbon dioxide adsorbent.

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PUM

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Abstract

The invention discloses a halloysite carbon dioxide adsorbent and a preparation method thereof. The halloysite carbon dioxide adsorbent is characterized by comprising a halloysite nanometer pipe and an organic amine substance loaded on the inner surface and outer surface of the halloysite nanometer pipe, wherein the mass ratio of the halloysite nanometer pipe to the organic amine substance is (1-10):1. The halloysite carbon dioxide adsorbent has higher adsorptive property and adsorptive selectivity on carbon dioxide, can release carbon dioxide at high temperature by adsorbing and storing carbon oxide at low temperature so as to realize the regeneration and reutilization of an adsorbing agent, and can be used for overcoming the defects that organic amine is easy to volatilize and can etch equipment easily and meeting the requirements of industrial treatment; and in addition, the preparation process is simple and controllable.

Description

technical field [0001] The invention relates to a carbon dioxide adsorbent, in particular to a halloysite-based carbon dioxide adsorbent. Background technique [0002] In recent years, the climate change caused by the "greenhouse effect" has become a global environmental problem, posing a huge threat to the survival of human beings and the sustainable development of social economy, and it has attracted more and more attention from all countries in the world. Among the greenhouse gases that cause global warming, CO 2 It is the gas that has the greatest impact on climate change. Its warming effect accounts for 63% of the total warming effect of all greenhouse gases, and it has the longest retention period in the atmosphere, which can reach 200 years. [0003] Global warming has increasingly seriously affected the earth's ecological environment and climate change, including vegetation migration and species extinction, climate zone movement, sea level rise and land inundation, ...

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 马睿陈涛暴峰高洁蔡浩浩王思严春杰
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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