Aerogel with doped cuprous ions as well as preparation method and application thereof

A technology of cuprous ion and airgel, which is applied in separation methods, carbon preparation/purification, chemical instruments and methods, etc., to achieve strong adsorption capacity and excellent performance

Inactive Publication Date: 2018-11-23
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because carbon monoxide is colorless and odorless, it is not easy to be noticed by us, so it will cause many undetected hazards

Method used

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  • Aerogel with doped cuprous ions as well as preparation method and application thereof
  • Aerogel with doped cuprous ions as well as preparation method and application thereof

Examples

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preparation example Construction

[0032] A method for preparing airgel doped with cuprous ions, by immersing the airgel in a cuprous chloride solution, oscillating, evaporating with the liquid, and evaporating the liquid to dryness, repeating the operation several times, and finally drying, Airgel doped with cuprous ions is obtained.

[0033] Preferably, the airgel includes carbon aerogel, polyimide aerogel, silica aerogel, alumina aerogel or graphene oxide aerogel.

[0034] Airgel has unique structure regulation characteristics, and the optimal specific surface area (200m 3 / g~2000m 3 / g) airgel. The pore size of the airgel is preferably micropores, and the more micropores, the better the physical adsorption effect.

[0035] Preferably, the airgel is carbon aerogel.

[0036] Preferably, the cuprous chloride solution is a hydrochloric acid solution of cuprous chloride or an alcoholic solution of cuprous chloride.

[0037] Wherein, the concentration range of the hydrochloric acid solution is 2.87mol / L-12.3...

Embodiment 1

[0045] Embodiment 1: carbon airgel impregnation method doping metal

[0046]RF airgel was prepared by using resorcinol (R), formaldehyde (F), sodium carbonate (C) and deionized water (H) as raw materials, wherein the molar ratio of resorcinol to formaldehyde was 1:2, carbonic acid The concentration of sodium is 0.05mol / L. The specific steps are as follows: dissolve resorcinol in deionized water, slowly add a certain amount of sodium carbonate solution dropwise, stir for a period of time to make it fully hydrolyzed, and finally add formaldehyde solution dropwise to the solution and stir for 2 hours, and the prepared solution Pour it into a glass container, put it in an oven for gel aging, and control the temperature at 30-90°C. After cutting the wet gel, replace it with alcohol as a replacement liquid, dry the RF wet gel under normal pressure, and finally The carbon aerogel is prepared by carbonization under the protection of inert gas and the environment of 1000°C. The carbo...

Embodiment 2

[0049] Example 2: Carbon airgel blending method doping metal

[0050] RF airgel was prepared by using resorcinol (R), formaldehyde (F), sodium carbonate (C) and deionized water (H) as raw materials, wherein the molar ratio of resorcinol to formaldehyde was 1:2, carbonic acid The concentration of sodium is 0.05mol / L. The specific steps are as follows: dissolve resorcinol in deionized water, slowly add a certain amount of sodium carbonate solution dropwise, stir for a period of time to make it fully hydrolyzed, and finally add formaldehyde solution dropwise to the solution and stir for 2 hours, and the prepared solution Pour it into a glass container, put it in an oven for gel aging, and control the temperature at 30-90°C. After cutting the wet gel, replace it with alcohol as a replacement liquid, dry it supercritically with carbon dioxide, and finally dry it under the protection of inert gas and carbonization at 1000°C to prepare carbon aerogels. The obtained carbon airgel is...

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Abstract

The invention relates to aerogel with doped cuprous ions as well as a preparation method and application thereof. The aerogel is soaked with a cuprous chloride solution, oscillation and evaporation together with liquid can be carried out, and the liquid is evaporated to dryness, and thus, the operation is carried out repeatedly; finally, drying is carried out so as to obtain the aerogel with the doped cuprous ions so as to realize adsorption of carbon monoxide. Compared with the prior art, after the aerogel is doped with metal, adsorption of the material on the carbon monoxide is improved to agreat extent, physical adsorption and chemical adsorption in an overall adsorption process are achieved, and the carbon monoxide is effectively desorbed by samples under normal temperature and normalpressure, so that circulating utilization is facilitated, and an effective and quick scheme is provided for the difficulty of the carbon monoxide.

Description

technical field [0001] The invention belongs to the field of gas adsorption, in particular to a method for adsorbing carbon monoxide based on airgel doped with cuprous ions. Background technique [0002] Airgel is a new type of nanoporous carbon material with excellent properties such as high porosity (>80%) and high specific surface area. It has good prospects in the fields of electricity, optics, acoustics, catalysis, and adsorption. Due to its relatively strong surface adsorption capacity, aerogel is also an excellent hydrogen storage material. [0003] Carbon monoxide is the most widely distributed and most abundant pollutant in the atmosphere, and it is also one of the important pollutants generated in the combustion process. Carbon monoxide can be produced when any carbon-containing substance is incompletely burned, so carbon monoxide comes from a wide range of sources, such as household coal stoves, gas water heaters, automobile engine exhaust gas and cigarettes a...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C01B32/05B01D53/02
CPCB01D53/02B01D2257/502B01J20/0237B01J20/20B01J20/28047C01B32/05
Inventor 沈军朱琼王晓栋陈冬
Owner TONGJI UNIV
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