Material for purifying micromolecule poisonous gases as well as preparation method thereof

A technology for purifying toxic gases and materials, applied in separation methods, chemical instruments and methods, and other chemical processes, to achieve the effects of easy-to-master technical operations, improved service life, and increased protection time

Inactive Publication Date: 2014-04-30
中国人民解放军防化学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the problem of effective protective materials for small molecule poisons urgently needs new breakthroughs.

Method used

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  • Material for purifying micromolecule poisonous gases as well as preparation method thereof
  • Material for purifying micromolecule poisonous gases as well as preparation method thereof
  • Material for purifying micromolecule poisonous gases as well as preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0020] The preparation method for the small molecule toxic gas purification material proposed by the present invention comprises the following steps:

[0021] (1) Dissolve lactulose-oligosaccharide or glucose, lanthanide metal nitrate and acrylamide or butene amide in water to obtain a solution, in which lactulose-oligosaccharide or glucose, cerium nitrate or lanthanum nitrate, acrylamide or butene The molar concentration (mol / L) of the aqueous solution of each component of the amide is: 0.01~1, 0.015~1, 0.02~1, adjust the pH value to 8~12 with urea or ammonia water to obtain a colloid, stir for 3~12 hours, and React at 120-300°C for 10-120 hours, filter to obtain the precipitate, wash the precipitate 5-8 times with water, wash with absolute ethanol 5-8 times, dry at 80°C for 4-8 hours, then dry at 450-600°C Calcining at lower temperature for 6 to 24 hours to obtain a spherical carrier;

[0022] (2) Dissolve one or more nitrates of metal copper, zinc, nickel, cobalt or silver...

Embodiment 1

[0025] Example 1 Preparation of Toxic Gas Purification Material: AgO / CeO 2 : 5.0% AgO loading

[0026] (1) Dissolve glucose, cerium nitrate and crotonamide in water to obtain a solution, wherein the aqueous molar concentrations (mol / L) of the components of glucose, cerium nitrate and crotonamide are: 0.025, 0.03, 0.03, respectively, Adjust the pH value to 9 with ammonia water to obtain a colloid, stir for 4 hours, react at 140°C for 40 hours, filter to obtain a precipitate, wash the precipitate with water 6 times, wash with absolute ethanol 6 times, and dry at 80°C for 5 hours , calcined at 500°C for 10 hours to obtain bright yellow spherical carrier CeO 2 , the microscopic morphology of the spherical carrier is as follows figure 2 shown;

[0027] (2) Dissolve metallic silver nitrate in water to make solution A, the molar concentration (mol / L) of metal oxide in solution A is 0.1, put the spherical carrier prepared in step (1) into solution A Stir to obtain suspension B, t...

Embodiment 2

[0029] Example 2 Preparation of toxic gas purification material: AgO / CeO 2 : 10.0% AgO loading

[0030](1) Dissolve glucose, cerium nitrate and crotonamide in water to obtain a solution, wherein the molar concentrations (mol / L) of the aqueous solutions of the components of glucose, cerium nitrate and crotonamide are: 0.1, 0.11, 0.13, respectively, Adjust the pH value to 9.5 with ammonia water to obtain a colloid, stir for 4 hours, react at 160°C for 60 hours, filter to obtain a precipitate, wash the precipitate with water 6 times, wash with absolute ethanol 6 times, and dry at 80°C for 5 hours , calcined at 550°C for 10 hours to obtain bright yellow spherical carrier CeO 2 ;

[0031] (2) Dissolve metallic silver nitrate in water to make solution A, the molar concentration (mol / L) of metal oxide in solution A is 0.5, put the spherical carrier prepared in step (1) into solution A Stir to obtain suspension B, the mass ratio of active metal oxide and spherical carrier in suspen...

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Abstract

The invention relates to a material for purifying micromolecule poisonous gases as well as a preparation method of the material, and belongs to the technical field of poisonous gas purification. The purification material comprises spherical carriers and reactive metal oxides; the spherical carriers are flower spherical rear-earth metal oxides, and are formed by weaving flaky petals; the reactive metal oxides are attached to petal clearances of the spherical carriers and petals at the outer layer in a form of nano particles. The material provided by the invention is a poisonous gas purification material, and greatly improves the protection effect of a protective facial mask at normal temperature, has two functions of adsorption and chemocatalysis and decomposition, and has a better protection effect and a purification function, compared with the existing catalytic materials, the service life of the material is prolonged by more than 10 times and meanwhile good antibacterial and sterilizing effects are achieved; the preparation method provided by the invention is mature in synthesis technology; the technical operation is easy to master; the microstructure of a purifying agent is in uniform distribution, and the productivity reaches 80% above.

Description

technical field [0001] The invention relates to a material for purifying toxic gas and a preparation method thereof, belonging to the technical field of purifying toxic gas. Background technique [0002] Aiming at many problems in the protection and elimination of small molecule chemical poisons in emergency counter-terrorism and handling secondary disasters and other events. Traditional activated carbon, carbon material impregnated with metal salts and organic amine protection methods have short protection time, limited adsorption capacity, and unsatisfactory overall protection effect for this type of small molecule poisons; at the same time, there is a lack of reasonable small molecule chemical poison elimination methods . At the same time, the effect of removing such substances in air purification is not ideal. The small molecule poisons mainly include: HCN, CNCl, CO, HF, Cl 2 , NH 3 And other chemical toxic substances, due to the characteristics of easy production an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/30B01J23/66B01J23/83B01J23/10B01D53/02B01D53/86
Inventor 孙杰李吉刚董中朝陈立泉
Owner 中国人民解放军防化学院
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