Load type nanocomposite oxide material for purifying environment and preparation thereof

A nano-composite and environmental purification technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of small specific surface area of expanded perlite and low photocatalyst activity , weak filtration and adsorption effect, etc., to achieve the effect of good filtration and adsorption effect, simple and easy preparation process, and low processing cost

Inactive Publication Date: 2008-11-12

CHENGDU UNIVERSITY OF TECHNOLOGY

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AI-Extracted Technical Summary

Problems solved by technology

However, the specific surface area of expanded perlite is small, generally 4m 2 /g, its internal micropores are usually regular capsules, and the...

Abstract

The present invention provides a supported nanometer compound oxide environmental purification material and the preparation thereof, the diatomite and the zeolite are employed as carrier to load one of nanometer TiO2, nanometer ZnO and nanometer CeO2. The preparation method comprises preparing carriers by diatomite and zeolite; preparing compound oxide precursory sol by employing ethanol as medium and the zinc nitrate and/or cerium nitrate and butyl titanate as material; loading the compound oxid precursory sol on the carrier to obtain loading-body; drying, baking and cooling the loading-body to obtain the supported nanometer compound oxide environmental purification material of the present invention which has perfect filter, adsorption, ion exchange, catalytic degradation and antibacterial function, good chemical stability, convenient usage, reclaim and regeneration, safety, innocuity, simple preparation technique and low cost. The supported nanometer compound oxid environmental purification material of the present invention is suitable for batch production and used widely in purifying process of atmosphere and water system.

Application Domain

Molecular sieve catalystsLighting and heating apparatus +4

Technology Topic

Ion exchangeChemistry +15

Examples

Experimental program(5)

Example Embodiment

[0011] Example 1

[0012] The loaded nano composite oxide environmental purification material of the present invention uses diatomaceous earth and zeolite as carriers, and supports nano TiO 2 , Nano ZnO and Nano CeO 2 Among them, diatomaceous earth and zeolite are 70% of the total mass of the material, and nano-oxides are 30% of the total mass of the material; the mixing ratio of diatomaceous earth and zeolite is diatomite: zeolite = 1:1 by mass ratio, The mixing ratio of nano-oxide is TiO by mass ratio 2 :ZnO:CeO 2 =1:0.5:0.5.

[0013] The preparation method steps are as follows:

[0014] 1) Pass the diatomaceous earth and zeolite through a 100 mesh sieve, take 350g of diatomaceous earth and 350g of zeolite under the sieve, soak in 5000g of 5% hydrochloric acid for 3 hours, take it out and wash with distilled water 3 times, and dry at 90℃ After 2 hours, calcined at 200°C for 3 hours, take out and cool, and obtain the carrier for later use.

[0015] 2) Add 275g zinc nitrate Zn(NO 3 ) 2 ·6H 2 O and 190g cerium nitrate Ce(NO 3 ) 2 ·6H 2 O was dissolved in 1810g of absolute ethanol, 85g of concentrated hydrochloric acid was added, 640g of butyl titanate was slowly added under stirring, and stirred, then 277g of distilled water was slowly added dropwise, and stirring was continued for 30 minutes to obtain a composite oxide precursor sol.

[0016] 3) Immerse the carrier described in 1) in the composite oxide precursor sol described in 2), stir for 8 hours and ventilate and dry at 100° C. for 6 hours to obtain the carrier.

[0017] 4) The supporting body described in 3) is heated to 500° C. at a heating rate of 2° C./min, and the temperature is kept for 2 hours, and then taken out and cooled to obtain the supported nano composite oxide environmental purification material of the present invention.

Example Embodiment

[0018] Example 2:

[0019] The loaded nano composite oxide environmental purification material of the present invention uses diatomaceous earth and zeolite as carriers, and supports nano TiO 2 , Nano ZnO, where diatomaceous earth and zeolite are 70% of the total mass of the material, and nano oxides are 30% of the total mass of the material; the mixing ratio of diatomaceous earth and zeolite is diatomite: zeolite = 1 :2, the mixing ratio of nano-oxide is TiO by mass ratio 2 : ZnO=1:1.

[0020] The preparation method steps are as follows:

[0021] 1) Pass the diatomaceous earth and zeolite through a 100-mesh sieve, take 233g of diatomaceous earth and 467g of zeolite under the sieve, soak in 5000g of 5% hydrochloric acid for 2 hours, take it out, wash with distilled water 3 times, and dry at 80℃ After 5 hours, calcinate at 300°C for 2 hours, take out and cool, and obtain the carrier for later use.

[0022] 2) Put 550g zinc nitrate Zn(NO 3 ) 2 ·6H 2 O was dissolved in 1660 g of absolute ethanol, 42 g of concentrated hydrochloric acid was added, 640 g of butyl titanate was slowly added under stirring, and stirred, then 146 g of distilled water was slowly added dropwise, and stirring was continued for 60 minutes to obtain a composite oxide precursor sol.

[0023] 3) The carrier described in 1) is immersed in the composite oxide precursor sol described in 2), stirred for 7 hours and then ventilated and dried at a temperature of 120° C. for 4 hours to obtain the carrier.

[0024] 4) The supporting body described in 3) is heated to 550°C at a heating rate of 2°C/min, and kept at the temperature for 2 hours, then taken out and cooled to obtain the supported nanocomposite oxide environmental purification material of the present invention.

Example Embodiment

[0025] Example 3:

[0026] The loaded nano composite oxide environmental purification material of the present invention uses diatomaceous earth and zeolite as carriers, and supports nano TiO 2 And Nano CeO 2 Among them, diatomaceous earth and zeolite are 70% of the total mass of the material, and nano-oxides are 30% of the total mass of the material; the mixing ratio of diatomaceous earth and zeolite is diatomite: zeolite = 1:0.5 by mass ratio, The mixing ratio of nano-oxide is TiO by mass ratio 2 : CeO 2 =1:1.

[0027] The preparation method steps are as follows:

[0028] 1) Pass the diatomaceous earth and zeolite through a 100-mesh sieve, take 467 g of diatomaceous earth and 233 g of zeolite under the sieve, soak in 5000 g of hydrochloric acid with a concentration of 5% for 3 hours, take it out and wash with distilled water 3 times, and dry at 80°C After 5 hours, calcinate at 300°C for 2 hours, take out and cool, and obtain the carrier for later use.

[0029] 2) Put 380g of cerium nitrate Ce(NO 3 ) 2 ·6H 2 O was dissolved in 1900 g of absolute ethanol, 107 g of concentrated hydrochloric acid was added, 640 g of butyl titanate was slowly added under stirring, and then stirred, then 320 g of distilled water was slowly added dropwise, and stirring was continued for 20 minutes to obtain a composite oxide precursor sol.

[0030] 3) The carrier described in 1) is immersed in the composite oxide precursor sol described in 2), stirred for 7 hours and then ventilated and dried at a temperature of 80° C. for 8 hours to obtain the carrier.

[0031] 4) The supporting body described in 3) is heated to 600°C at a heating rate of 3°C/min, and kept for 1 hour, then taken out and cooled to obtain the supported nanocomposite oxide environmental purification material of the present invention.

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Classification and recommendation of technical efficacy words

HEPA filter

Load type nanocomposite oxide material for purifying environment and preparation thereof

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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