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Preparation method and application of solid porous gas adsorption material

A gas adsorption and solid-state technology, applied in the field of adsorption materials, can solve the problems of affecting the adsorption speed and adsorption capacity, low effective amine loading rate, and reduced specific surface area, etc., and achieve the effect of fast adsorption speed, low loss and high adsorption capacity

Inactive Publication Date: 2019-10-25
浙江跃维新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessively loaded liquid amine will block the pores of solid materials, reduce the specific surface area, and affect the adsorption speed and adsorption capacity. Therefore, the effective amine loading rate of this type of adsorbent is low, often lower than 10mol / kg, resulting in low adsorption capacity.
In addition, the loaded liquid amine will be lost due to volatilization, oxidation and other reasons during the heating and desorption process, resulting in poor cycle stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Preparation of polyethyleneimine / glycerol triglycidyl ether cross-linked adsorption material

[0031] Mix and stir 6 grams of polyethyleneimine, 2 grams of glycerol triglycidyl ether, 82 grams of water, and 10 grams of isopropanol to form a dispersion. Pour the dispersion into a stainless steel container and freeze at -20 °C. After standing for 8 hours, the frozen gel was thawed at room temperature to obtain a cross-linked gel, and then the gel was dried in an oven at 100 °C to obtain a block-shaped adsorption material. The amino group content in the obtained adsorbent material is about 17.4 mol / kg. The obtained adsorbent material was subjected to CO 2 Sorption Tests from Humid Air and Humid CO 2 The medium can adsorb about 2.0 mol / kg and 4.0 mol / kg respectively.

Embodiment 2

[0032] Example 2: Preparation of pentaethylene hexamine (PEHA) / ethylene glycol diglycidyl ether (EGDGE) cross-linked adsorption material

[0033] 3 g of pentaethylene hexamine, 6 g of ethylene glycol diglycidyl ether, and 91 g of water were mixed and stirred evenly to form a dispersion. Pour the dispersion into a stainless steel container and freeze at -20 °C. After standing for 6 hours, the frozen gel was thawed at room temperature to obtain a cross-linked gel, and then the gel was dried in an oven at 100 °C to obtain a block-shaped adsorption material. The amino group content in the obtained adsorbent material is about 8.6 mol / kg. The obtained adsorbent material was subjected to CO 2 Sorption Tests from Humid Air and Humid CO 2 The medium can adsorb about 1.2 mol / kg and 2.9 mol / kg respectively.

Embodiment 3

[0034] Example 3: Preparation of Pentaethylene Hexamine / Ethylene Glycol Diglycidyl Ether Crosslinked Adsorption Material in Film Shape

[0035] Mix 2.5 grams of pentaethylenehexamine, 5 grams of ethylene glycol diglycidyl ether, and 35 grams of water evenly to form a dispersion. Then pour 20 grams of dispersion liquid wherein in the plastic container of 20cm*10cm, place the freezing in the environment of-20 ℃. After standing for 48 hours, the frozen gel was thawed at room temperature to obtain a cross-linked gel film, and then the gel film was dried in an oven at 100 °C to obtain a film-like adsorbent material with a film thickness of about 1 mm. The film-like adsorbent material is cut into small pieces, placed in the adsorption column for adsorption test, from humid air and humid CO 2 The medium can adsorb about 1.3 mol / kg and 3.2 mol / kg respectively.

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PUM

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Abstract

The invention discloses a preparation method and application of a solid porous gas adsorption material. The preparation method includes the steps that (1) organic amine, a crosslinking agent and a solvent are mixed to form a dispersion solution; (2) the dispersion solution is refrigerated at a low temperature; (3) under the condition of refrigeration, the organic amine and the crosslinking agent occur a cross linking reaction to form a crosslinked ice gel; and (4) the ice gel is dried to obtain the solid porous gas adsorption material, and the organic amine includes a mixture of one or two ofpolymer containing amines and polyamine. The adsorption material can be used for absorbing carbon dioxide, hydrogen sulfide, sulfur oxide, nitrogen oxide and formaldehyde vapor and can be regeneratedby heating, the adsorption material is simple in preparation process, low in equipment requirement, low in production cost, safe and environmentally friendly, and wide in application range; any othercarriers do not required, amino load is high, adsorption capacity is high, and the adsorption efficiency is high; and during regeneration, the amine does not volatilize, the loss is less, and heat stability and circulation stability are good.

Description

technical field [0001] The invention relates to a preparation method and application of a solid porous gas adsorption material, belonging to the technical field of adsorption materials. Background technique [0002] In recent years, human activities have released a large amount of toxic and harmful gases into the atmosphere, such as nitrogen oxides, sulfur oxides, hydrogen sulfide, etc. The excessive emission of carbon dioxide has made the trend of global warming more and more serious. Global warming caused by the greenhouse effect will bring about drastic climate change and a sharp rise in sea level, which will cause irreversible ecological disasters. Under the Paris climate agreement, countries around the world aim to keep average temperatures below 2 degrees Celsius above pre-industrial levels. In order to achieve this goal, it is necessary to achieve a large-scale reduction of carbon dioxide emissions, to achieve zero emissions or even negative emissions. Therefore, c...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/26B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/302B01D2257/304B01D2257/40B01D2257/504B01D2257/70B01J20/22B01J20/26B01J20/28047Y02C20/40
Inventor 李银勇
Owner 浙江跃维新材料科技有限公司
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