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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI 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 connectivity of the micropores is poor, making its filtration and adsorption effect weak, and the activity of the loaded photocatalyst is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The supported nano-composite oxide environmental purification material of the present invention uses diatomite and zeolite as carriers, and supports nano-TiO 2 , nano-ZnO and nano-CeO 2 , wherein, diatomite and zeolite are 70% of the total mass of the material, and nano oxides are 30% of the total mass of the material; the proportion of diatomite and zeolite is diatomite by mass ratio: zeolite=1:1, The mixing ratio of nano oxides 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 diatomite and zeolite through a 100-mesh sieve, take 350g of diatomite and 350g of zeolite under the sieve, soak in 5000g of hydrochloric acid with a concentration of 5% for 3 hours, take it out, wash it with distilled water for 3 times, and dry it at 90°C 2 hours, then calcined at 200°C for 3 hours, taken out and cooled to obtain a carrier for future use.

[0015] 2) 275g zinc nitrate Zn(NO 3 ) 2 ·6H 2 O and 190g cer...

Embodiment 2

[0019] The supported nano-composite oxide environmental purification material of the present invention uses diatomite and zeolite as carriers, and supports nano-TiO 2 , nanometer ZnO, wherein, diatomite and zeolite are 70% of material gross mass, and nano-oxide is 30% of material gross mass; The mixing ratio of diatomite and zeolite is diatomite by mass ratio: zeolite=1 : 2, the compounding 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 diatomite and zeolite through a 100-mesh sieve, take 233g of diatomite and 467g of zeolite under the sieve, soak them in 5000g of hydrochloric acid with a concentration of 5% for 2 hours, wash them with distilled water for 3 times after taking them out, and dry them at 80°C 5 hours, then calcined at 300° C. for 2 hours, taken out and cooled to obtain a carrier for future use.

[0022] 2) 550g zinc nitrate Zn(NO 3 ) 2 ·6H 2 O was dissolved in 1660g of absolute...

Embodiment 3

[0026] The supported nano-composite oxide environmental purification material of the present invention uses diatomite and zeolite as carriers, and supports nano-TiO 2 and nano-CeO 2 , wherein, diatomite 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 diatomite and zeolite is diatomite: zeolite=1: 0.5 by mass ratio, The mixing ratio of nano oxides is TiO by mass ratio 2 : CeO 2 =1:1.

[0027] The preparation method steps are as follows:

[0028] 1) Pass the diatomite and zeolite through a 100-mesh sieve, take 467g of diatomite and 233g of zeolite under the sieve, soak them in 5000g of hydrochloric acid with a concentration of 5% for 3 hours, wash them with distilled water for 3 times after taking them out, and dry them at 80°C 5 hours, then calcined at 300° C. for 2 hours, taken out and cooled to obtain a carrier for future use.

[0029] 2) 380g cerium nitrate Ce(NO 3 ) 2 ·6H 2 O was d...

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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.

Description

technical field [0001] The invention relates to an environment purification material and a preparation method thereof, in particular to a loaded nanometer composite oxide environment purification material and a preparation method thereof. Background technique [0002] The control and treatment of environmental pollution is a major issue facing and urgently to be solved by human beings in the 21st century. The development of practical technologies that can filter, absorb and degrade various pollutants to harmlessness is the key to solving environmental problems such as water pollution and air pollution. Effective Ways. Chinese patent CN1792427 discloses an expanded perlite-supported doped nano-titanium dioxide catalyst and a preparation method thereof. It uses expanded perlite as a carrier, loaded with doped nanocrystalline TiO 2 layer, it is also doped with La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Tm, Yb or Lu, the sol is prepared with titanate or titanyl sulfate as precursor, ...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J23/06B01J23/10B01J29/06B01J37/02B01D53/86F24F3/16
Inventor 李峻峰邱克辉张佩聪邓春林邹璇张伟胡新鸽王彦梅
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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