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Ferrite doped piezoelectric catalytic porous ceramic material, preparation method and applications thereof

A technology of porous ceramics and ferrite, which is applied in the direction of chemical instruments and methods, separation methods, heterogeneous catalyst chemical elements, etc., can solve problems such as increasing costs and increasing secondary greenhouse gas emissions, and achieves emission avoidance and stable performance , low cost effect

Inactive Publication Date: 2020-03-31
苏州尼普环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, methods such as spraying method, thermal storage combustion method (RTO), catalytic combustion method (RCO) and zeolite runner method all require additional energy supply, which not only increases the cost, but also increases the emission of secondary greenhouse gases.

Method used

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Examples

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preparation example Construction

[0027] The embodiment of the present invention also provides a preparation method of a ferrite-doped piezoelectric catalytic porous ceramic material comprising the following steps:

[0028] Step 1: Provide a ferrite solution with a molar mass ratio of iron ions, positive monovalent cations, and positive divalent cations at a molar mass ratio of 1:1, and soak the porous ceramic substrate in the ferrite solution to fully absorb iron ions, positive monovalent cations, and Positive divalent cations, and then place the porous ceramic substrate after adsorption treatment in NaOH solution and soak for 3-5h;

[0029] Step 2: Repeat the treatment of the porous ceramic substrate for 3-10 times according to the method of Step 1, and then react at a temperature of 450-650° C. for 4-12 hours;

[0030] Step 3: repeating the operations of step 1 and step 2 until iron ions, positive monovalent cations and positive divalent cations are all adsorbed on the surface and inside of the porous ceram...

Embodiment 1

[0039] Step 1: Provide a ferrite solution with a mass ratio of iron ions, potassium ions and magnesium ions of 1:1:1, soak the porous ceramic substrate in the ferrite solution to fully absorb iron ions, potassium ions and magnesium ions, and then The porous ceramic substrate after the adsorption treatment was placed in 300mL of 1.0mol / L NaOH solution and soaked for 3h.

[0040] Step 2: Repeat the treatment of the porous ceramic substrate 5 times according to the method of Step 1, and then react at a temperature of 450° C. for 18 hours.

[0041] Step 3: repeating the operations of step 1 and step 2 until all the iron ions, potassium ions and magnesium ions are adsorbed on the surface and inside of the porous ceramic matrix to obtain the ferrite-doped piezoelectric catalytic porous ceramic material.

Embodiment 2

[0043] Step 1: Provide a ferrite solution with a molar mass ratio of iron ions, sodium ions and magnesium ions of 1:1:1, and soak the porous ceramic substrate in the ferrite solution to fully absorb iron ions, sodium ions and magnesium ions, Afterwards, the porous ceramic substrate after the adsorption treatment was placed in 300 mL of 1.0 mol / L NaOH solution and soaked for 3 hours.

[0044] Step 2: Repeat the treatment of the porous ceramic substrate 5 times according to the method of Step 1, and then react at a temperature of 650° C. for 8 hours.

[0045] Step 3: repeating the operations of step 1 and step 2 until iron ions, sodium ions and magnesium ions are all adsorbed on the surface and inside of the porous ceramic matrix to obtain the ferrite-doped piezoelectric catalytic porous ceramic material.

[0046] The purpose of air purification can be achieved by placing the ferrite-doped piezoelectric catalytic porous ceramic material prepared in Examples 1 to 2 at the tuyere....

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Abstract

The invention provides a ferrite doped piezoelectric catalytic porous ceramic material, which comprises a porous ceramic matrix and catalytic units attached to the surface and the interior of the matrix and having piezoelectric effect, wherein the catalytic unit at least comprises ferrite, the ferrite material comprises iron ions, positive monovalent cations and positive divalent cations, and a molar mass ratio of the iron ions to the positive monovalent cations to the positive divalent cations is 1:1:1. According to the invention, the ferrite doped piezoelectric catalytic porous ceramic material has a piezoelectric effect, and can efficiently degrade volatile organic compounds under the action of wind energy, mechanical energy or sound wave energy; when the ferrite doped piezoelectric catalytic porous ceramic material is used for an industrial pulse dust collector, dust removal and dust and toxic and harmful gas removal can be simultaneously achieved; the ferrite doped piezoelectric catalytic porous ceramic material is used in an air purifier and an air conditioner, the emission of secondary greenhouse gas is avoided, and the problem that active carbon needs to be frequently replaced after reaching adsorption saturation is overcome; and the material is stable in performance, reusable and low in cost, and the preparation method is simple, easy to implement and environmentally friendly.

Description

technical field [0001] The invention relates to a ferrite-doped piezoelectric catalysis porous ceramic material, in particular to a ferrite-doped piezoelectric catalysis porous ceramic material, a preparation method and its application in air purification, belonging to the technical field of environmental protection. Background technique [0002] The methods for purifying air in the prior art include activated carbon adsorption, photocatalytic oxidation, and low-temperature plasma oxidation. The activated carbon adsorption method is easy to reach adsorption saturation, and must be replaced after a certain period of time, which brings difficulties to the subsequent treatment. Volatile organic compounds (VOCs) gases in industry are degraded by spray method, regenerative combustion method (RTO), catalytic combustion method (RCO) and zeolite runner method. However, spraying method, thermal storage combustion method (RTO), catalytic combustion method (RCO) and zeolite runner met...

Claims

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Application Information

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IPC IPC(8): C04B41/85B01J23/78B01D53/86B01D53/44
CPCB01J23/78B01J23/002B01D53/8687C04B41/009C04B41/85C04B41/5007C04B41/4535B01J2523/00B01D2258/06B01D2257/708B01J35/33B01J2523/13B01J2523/22B01J2523/842B01J2523/12C04B35/195C04B35/10Y02A50/20
Inventor 梁静刘守清
Owner 苏州尼普环境科技有限公司
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