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Air cleaning agent and preparation method thereof

A technology of air purifiers and oxides, applied in chemical instruments and methods, botanical equipment and methods, separation methods, etc., can solve problems such as failure to promote catalytic efficiency, unsatisfactory harmful gas treatment results, and low catalytic efficiency , to achieve the effects of uniform microstructure distribution, easy-to-master technical operation, and mature synthesis process

Inactive Publication Date: 2014-04-16
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

[0008] The existing catalytic materials for air purification are mainly TiO 2 The main photocatalyst, but the catalytic efficiency is very low, so choosing a suitable carrier material or compounding other elements is the key to solving the problem
Commonly used carriers are activated carbon and silica gel, etc. The carrier only plays the role of support and gas adsorption, and does not play the role of promoting catalytic efficiency.
Simultaneously for CO, NO x 、H 2 S, NH 3 Harmful gas treatment results are not ideal

Method used

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  • Air cleaning agent and preparation method thereof
  • Air cleaning agent and preparation method thereof
  • Air cleaning agent and preparation method thereof

Examples

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preparation example Construction

[0026] The preparation method of described air cleaner comprises the following steps:

[0027] (1) Dissolve lactulose-oligosaccharide or glucose, cerium nitrate or lanthanum nitrate, and acrylamide or crotonamide 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;

[0028] (2) Dissolve the soluble salt of active metal in water to make solution A, the molar concentration (mmol / L) of active metal in solutio...

Embodiment 1

[0032] Embodiment 1: air cleaner: Pt / CeO 2 : 0.2% Pt loading

[0033] (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 4 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;

[0034] (2) The soluble salt of the active Pt metal (H 2 PtCl 6 ) was dissolved in water to make solution A, the molar concentration (mmol / L) of the active metal in solution A was 0.1, the spherical carrier prepared in step (1) was put into solution A and stirred to ob...

Embodiment 2

[0036] Embodiment 2: air cleaner: Pt / CeO 2 : 1.0% platinum loading

[0037] (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 10 with ammonia water to obtain a colloid, stir for 10 hours, react at 200°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 600°C for 6 hours to obtain bright yellow spherical carrier CeO 2 ;

[0038] (2) The soluble salt of the active Pt metal (H 2 PtCl 6 ) was dissolved in water to make solution A, the molar concentration (mmol / L) of the active metal in solution A was 0.5, the spherical carrier prepared in step (1) was put into solution A and stirred to obtain suspension B, The mass ratio of the active metal to the...

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Abstract

The invention relates to an air cleaning agent and a preparation method thereof, and belongs to the technical field of environmental protection. The air cleaning agent comprises a globular carrier and a reactive metal or reactive metal oxide, wherein the globular carrier is a flower-ball-shaped rare-earth oxide, the globular carrier is composed of sheet petals by interweaving, and the reactive metal or reactive metal oxide is attached on the petal gaps of the globular carrier and the outer-layer petals. The air cleaning agent provided by the invention has the advantages that the air cleaning effect under the normal temperature is greatly improved, the air cleaning agent has the good catalytic activity, and the air cleaning speed is greatly improved; compared with the existing catalyst, the service life of the air cleaning agent is prolonged more than ten times, the air cleaning cost is reduced, and the air cleaning agent has the good antibacterial effect and has the good killing action on the common germs and viruses; the technology of the preparation method is mature, the technology and the operation are easy to control, the distribution of a microstructure of the cleaning agent is uniform, and the productive rate is more than 80%.

Description

Technical field [0001] The invention relates to an air purifier and a preparation method thereof, and belongs to the technical field of environmental protection. Background technique [0002] With the general improvement of people's material and cultural living standards, quality of life and health have increasingly become a major concern. With the widespread use of air conditioners, the accompanying indoor health problems have also attracted increasing attention. [0003] A survey conducted in the United States showed that people spend an average of 88% of their daily time indoors, 7% in cars, and only 5% of their time outdoors. In this way, in a confined space environment, people may be exposed to higher concentrations of multiple pollutants intermittently for a short period of time, or exposed to multiple pollutants at low concentrations for a long time and continuously. Compared with outdoor pollution, confined spaces Pollution will cause greater damage to people's hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J35/08B01J23/63B01J23/66B01J23/83B01J23/10B01J23/89A01N59/16A01N59/20A01P1/00B01D53/86B01D53/72B01D53/52B01D53/56B01D53/58B01D53/62
Inventor 孙杰李吉刚周添陈立泉
Owner 中国人民解放军防化学院
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