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Carbon dioxide adsorbent and preparation method thereof

A carbon dioxide and adsorbent technology, applied in the field of carbon dioxide adsorbent and its preparation, can solve the problem of low carbon dioxide adsorption selectivity, achieve high adsorption capacity, simple and easy process, and overcome the effect of low adsorption selectivity

Inactive Publication Date: 2014-04-02
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the low selectivity of existing adsorbents for carbon dioxide adsorption in flue gas, the present invention provides a highly selective carbon dioxide adsorbent and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 5mmol iron nitrate, 2.5mmol cobalt nitrate, 4.95mmol trimesic acid and 3mmol HF into 35mL deionized water, stir evenly, put it into a hydrothermal reaction kettle, and obtain the product through hydrothermal reaction. At normal temperature and pressure, its carbon dioxide adsorption capacity is 6.2 mol / kg, and its carbon dioxide / nitrogen selectivity is 178.

Embodiment 2

[0020] Add 5mmol of iron nitrate, 5mmol of cobalt nitrate, 6mmol of trimesic acid and 2mmol of HF into 40mL of deionized water, stir evenly, put it into a hydrothermal reaction kettle, and obtain the product through hydrothermal reaction. At normal temperature and pressure, its carbon dioxide adsorption capacity is 4.3mol / kg, and its carbon dioxide / nitrogen selectivity is 124.

Embodiment 3

[0022] Add 2.5mmol of ferric nitrate, 5mmol of cobalt nitrate, 6mmol of trimesic acid and 2mmol of HF into 40mL of deionized water, stir evenly, put it into a hydrothermal reaction kettle, and obtain the product through hydrothermal reaction. At normal temperature and pressure, its carbon dioxide adsorption capacity is 5.7mol / kg, and its carbon dioxide / nitrogen selectivity is 165.

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Abstract

The invention provides a carbon dioxide adsorbent and a preparation method thereof. The carbon dioxide adsorbent is a metal organic skeleton containing two mixed ions, and the ions comprise iron ions and cobalt ions. The adsorbent prepared by the preparation method provided by the invention has the advantages of high adsorption capacity and high carbon dioxide selectivity, so that low-concentration carbon dioxide in flue gas can be enriched to a higher concentration so as to meet the treatment requirements of carbon dioxide waste gas in flue gas in industry, the carbon dioxide emission is reduced and the resource utilization of the carbon dioxide is realized at the same time.

Description

technical field [0001] The invention relates to the field of adsorbents, in particular to a carbon dioxide adsorbent and a preparation method thereof. Background technique [0002] The main cause of global warming is the emission of greenhouse gases such as carbon dioxide caused by human activities. At present, the amount of greenhouse gases emitted globally has exceeded 30 billion tons. China’s greenhouse gases emitted account for 22.3% of the world’s total, surpassing the United States as the global leader. First. It is estimated that by 2020, the world's energy consumption will increase by more than 70%, which will increase the emission of carbon dioxide by more than 50%. Reducing carbon dioxide emissions has become a key issue that affects human production, life and even survival. [0003] The capture and separation methods of carbon dioxide mainly include solvent absorption method, pressure swing / temperature swing adsorption method, membrane separation technology, etc...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01D53/02C01B31/20C01B32/50
CPCY02C10/08Y02C20/40Y02P20/151
Inventor 银凤翔李国儒陈标华
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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