High performance catalyst for catalyzing formaldehyde to complete oxidation under room temperature temperature

A complete oxidation and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve high technical requirements, expensive equipment, and complicated raw material preparation methods and other problems, to achieve the effect of less dosage, simple use conditions and low cost of raw materials

Active Publication Date: 2006-07-05
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although plasma catalytic technology can decompose harmful gases at normal temperature and pressure, it will produce by-products such as carbon monoxide, ozone and nitrogen oxides, and the equipment that can generate plasma is expensive
The current research is more on nano-photocatalytic d

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] Take 10 grams of titanium dioxide powder and add a certain amount of deionized water. Under the condition of stirring, 1% Pt solution was added, and after stirring for 1 hour, it was dried by rotary evaporation at 70° C., and then calcined at 600° C. for 5 hours to obtain the desired catalyst. Sieve the catalyst into 40-60 mesh particles for later use.

Example Embodiment

[0021] Example 2

[0022] 0.066 gram of embodiment 1 catalysts are placed in the tubular fixed-bed reactor to react, and experimental conditions are as follows:

[0023] Volume composition: Oxygen: 20%, Nitrogen: 80%, Formaldehyde gas is generated by a formaldehyde gas generator, nitrogen is blown into the reaction system, the formaldehyde concentration is controlled at 0.05%, and the reaction space velocity (GHSV) is 50,000 / hour. At room temperature, the conversion rate of formaldehyde was 100%, and the conversion rate did not decrease after keeping for 24 hours.

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PUM

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Abstract

The invention provides a high-activity catalyst for catalyzing complete oxidation of low-concentration formaldehyde under the condition of room temperature. Said catalyst is made up by using simple easy-available metal oxide and small quantity of noble metal as raw material, its preparation method is simple. The metal oxide is used as main body of said catalyst, the noble metal component is loaded on the metal oxide. The described metal oxide can be at least one of cerium dioxide, zirconium dioxide, titanium dioxide, aluminium oxide, lanthanum sesquioxide, magnesium oxide, zinc oxide, calcium oxide and copper oxide, and the described noble metal component can be at least one of platinum, gold, rhodium, palladium and silver.

Description

technical field [0001] The invention is used to catalyze the oxidation of formaldehyde gas at room temperature, and can catalyze the oxidation of formaldehyde gas into carbon dioxide and water at room temperature. The catalyst has high formaldehyde oxidation activity within a certain time range, and the conversion rate of formaldehyde can reach 100%. . technical background [0002] With the improvement of people's material and cultural living standards, interior decoration has become fashionable. But indoor air pollution is also getting worse. Formaldehyde is the most serious pollutant in furniture and decoration. A variety of interior decoration materials, such as furniture paint, wallpaper, plastic floors, chemical fiber carpets, doors and windows, etc., may release formaldehyde into the room. The release of formaldehyde in the environment can last for several years. Long-term exposure to low-dose formaldehyde can cause chronic respiratory diseases, nasopharyngeal canc...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01D53/72B01J23/38B01J23/89
Inventor 贺泓张长斌田中虔一
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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