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Purification material of gas-state pollutants as well as preparation method and application of purification material

A technology for purifying materials and pollutants, used in chemical instruments and methods, separation methods, catalysts for physical/chemical processes, etc., can solve the problems of rising material costs, poor removal of benzene series, and high content of precious metal Pt. Low preparation cost, flexible use, and powerful purification

Inactive Publication Date: 2017-05-31
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This material has a high removal rate of formaldehyde and ammonia, but the removal effect of benzene series is not good, and the content of precious metal Pt used is high, which leads to an increase in material cost

Method used

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  • Purification material of gas-state pollutants as well as preparation method and application of purification material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 0.1%Pt-0.1%MnO-40%TiO 2 - AC (T400)

[0035] An air purification material for gaseous pollutants, with activated carbon as the carrier, other components accounted for by mass fraction of the adsorption material: titanium dioxide 40%; manganese oxide 0.1%; platinum 0.1%.

[0036] The specific preparation steps are as follows: Dissolve 0.0134g of manganese acetate in 15mL of absolute ethanol, then add 3g of activated carbon, and stir thoroughly; add 2.5mL of tetrabutyl titanate, 0.1mL of concentrated hydrochloric acid, 0.05mL of acetylacetone, 1.5375mL, 0.01M Chloroplatinic acid solution, fully stirred, recorded as solution A; take 1mL of absolute ethanol and 0.7mL of pure water and mix to make solution B; gradually drop solution B into the vigorously stirred solution A, and stir until it is in a gel state; The materials were aged at room temperature for 12 hours, and then dried at 120°C for 11 hours. Put the dried material into a muffle furnace and bake at 40...

Embodiment 2

[0037] Example 2 0.1%Pt-1%MnO-60%TiO 2 - AC (T600)

[0038]An air purification material for removing gaseous pollutants, with activated carbon as the carrier, other components accounted for by mass fraction of the adsorption material: titanium dioxide 60%; manganese oxide 1%; platinum 0.1%.

[0039] The specific preparation steps are as follows: dissolve 0.1338g of manganese acetate in 19mL of absolute ethanol, then add 3g of powdered activated carbon, and stir thoroughly; add 7.2mL of tetrabutyl titanate, 0.1mL of concentrated hydrochloric acid, 0.05mL of acetylacetone, and a molar concentration of 1.5375mL It is 0.01mol / L chloroplatinic acid solution, fully stirred, and recorded as solution A; mix 1mL of absolute ethanol and 1mL of pure water to make solution B; gradually drop solution B into the vigorously stirred solution A, and stir until gel State: The material obtained above was aged at room temperature for 14 hours, and then dried at 120° C. for 12 hours. Put the dri...

Embodiment 3

[0040] Example 3 0.5%Pd-0.1%MnO-20%TiO 2 - Zeolite (T500)

[0041] An air purification material for removing gaseous pollutants, with zeolite as the carrier, other components accounted for by mass fraction of the adsorption material: titanium dioxide 20%; manganese oxide 0.1%; palladium 0.5%.

[0042] The specific preparation steps are as follows: Dissolve 0.0134g of manganese acetate in 15mL of absolute ethanol, then add 3g of zeolite and stir thoroughly; add 2.6mL of tetrabutyl titanate, 0.1mL of concentrated hydrochloric acid, 0.05mL of acetylacetone, 6.3mL, 0.0242M Palladium chloride aqueous solution, fully stirred, recorded as solution A; 1mL absolute ethanol and 0.7mL pure water were mixed to make solution B; solution B was gradually dripped into solution A which was vigorously stirred, and stirred until it was in a gel state; The obtained material was aged at room temperature for 12 hours, and then dried at 120° C. for 10 hours. Put the dried material into a muffle fu...

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Abstract

The invention provides a purification material of gas-state pollutants. The purification material takes an adsorption material as a carrier; titanium dioxide, manganese oxide and reduced-state noble metal are loaded on the carrier, wherein the loading amount of the titanium dioxide is 0 to 60 percent of the mass of the adsorption material; the loading amount of the manganese oxide is 0.1 to 10 percent of the mass of the adsorption material; the loading amount of the reduced-state noble metal is 0.01 to 1 percent of the mass of the adsorption material; the reduced-state noble metal is one or two or more than two of platinum, palladium, gold and silver; the titanium dioxide is modified by adopting an ion doping modification manner and a photocatalyst is loaded by the adsorption material with a high adsorption property, so that a composite catalyst with high efficiency, low cost and no secondary pollution is prepared; the composite catalyst can be used for purifying VOCs (Volatile Organic Chemicals) including formaldehyde, benzene, toluene and the like in indoor air and eliminating O3 gas-state pollutants under room temprature; the disadvantage of an existing air purification technology that the efficiency of removing the gas-state pollutants is low is overcome.

Description

technical field [0001] The invention relates to the technical field of preparation of purification materials, more specifically, to a purification material for gaseous pollutants and its preparation method and application. Background technique [0002] Indoor air pollution is also known as a special disaster in modern cities, and it has been listed internationally as the most harmful environmental factor to public health. On average, human beings spend more than 80% of their time indoors every day, and the quality of air intake accounts for more than 75% of the total intake of the human body. Therefore, indoor air quality is extremely important to human health. Studies have shown that indoor air pollution is 2 to 10 times more serious than outdoor air, and can reach 100 times in special cases. American experts have found that there are more than 500 kinds of VOCs (volatile organic compounds) in the indoor air, including more than 20 carcinogens, such as benzene and formalde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/54B01J23/656B01J23/68B01D53/86B01D53/72B01J20/06B01J20/16B01J20/20B01J20/30
CPCB01D53/8668B01J20/06B01J20/165B01J20/20B01J23/54B01J23/6562B01J23/688B01D2258/06B01J35/19B01J35/39
Inventor 黄海保刘高源叶信国
Owner SUN YAT SEN UNIV
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