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Integral type room temperature formaldehyde oxidation catalyst and preparation method thereof

An oxidation catalyst, monolithic technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. cumbersome and other problems, to achieve the effect of increasing load capacity, low shedding rate and improving activity

Active Publication Date: 2017-02-22
宁波智通环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose is to solve the problems of low catalytic activity for eliminating formaldehyde at room temperature, cumbersome preparation process, catalyst coating peeling off during the washing process, low loading of active components, adverse effects on the catalyst preparation process when adding alkaline substances, and unsuitable for industrial production.

Method used

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  • Integral type room temperature formaldehyde oxidation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add 0.33g H to the beaker 2 PtCl 4 , 24.875g TiO 2 (P25), add 500ml distilled water, stir for 0.5h;

[0034] (2) Take 0.1g NaBH into another beaker 4 Stir and dissolve in 50ml water;

[0035] (3) Add the solution prepared in step (2) to the solution prepared in step (1) at room temperature, and stir for 1 h;

[0036] (4) Add 10 g sodium carboxymethyl cellulose to (3) solution, stir for 15 min;

[0037](5) Take cordierite honeycomb ceramics with a size of 15cm*15cm*1cm and immerse them in the solution prepared in step (4). After a certain period of time, take out the honeycomb carrier, remove the excess solution on the honeycomb carrier, and dry it at 150°C until The monolithic formaldehyde room temperature oxidation catalyst is prepared after the weight does not change.

Embodiment 2

[0039] (1) Add 0.33g H to the beaker 2 PtCl 4 , 24.875g SiO 2 (P25), add 500ml distilled water, stir for 0.5h;

[0040] (2) Take 0.1g NaBH into another beaker 4 Stir and dissolve in 50ml water;

[0041] (3) Add the solution prepared in step (2) to the solution prepared in step (1) at room temperature, and stir for 1 h;

[0042] (4) Add 10 g sodium carboxymethyl cellulose to (3) solution, stir for 15 min;

[0043] (5) Take cordierite honeycomb ceramics with a size of 15cm*15cm*1cm and immerse them in the solution prepared in step (4). After a certain period of time, take out the honeycomb carrier, remove the excess solution on the honeycomb carrier, and dry it at 150°C until The monolithic formaldehyde room temperature oxidation catalyst is prepared after the weight does not change.

Embodiment 3

[0045] (1) Add 0.35g Na to the beaker 2 PdCl 4 , 24.875g TiO 2 (P25), add 500ml distilled water, stir for 0.5h;

[0046] (2) Take 0.1g NaBH into another beaker 4 Stir and dissolve in 50ml water;

[0047] (3) Add the solution prepared in step (2) to the solution prepared in step (1) at room temperature, and stir for 1 h;

[0048] (4) Add 10 g sodium carboxymethyl cellulose to (3) solution, stir for 15 min;

[0049] (5) Take cordierite honeycomb ceramics with a size of 15cm*15cm*1cm and immerse them in the solution obtained in step (4). After a certain period of time, take out the honeycomb carrier, remove the excess solution on the honeycomb carrier, and dry it at 150°C to the weight The monolithic formaldehyde room temperature oxidation catalyst was prepared after no change.

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Abstract

The invention discloses an integral type room temperature formaldehyde oxidation catalyst and a preparation method thereof, and relates to the fields of catalyst preparation and environmental protection. The integral type room temperature formaldehyde oxidation catalyst takes a supported noble metal catalyst as an active component, takes alkaline substances as a binding agent and an active auxiliary agent, and takes a molded honeycomb carrier as a matrix. The integral type room temperature formaldehyde oxidation catalyst is prepared by mixing the supported noble metal catalyst and the alkaline substances into a solution, then dipping the honeycomb carrier into the solution, and drying at constant temperature. The integral type room temperature formaldehyde oxidation catalyst has higher low-temperature formaldehyde catalytic oxidation activity, and can enable formaldehyde to be converted into harmless H2O and CO2 by means of catalytic oxidation under the condition of not needing other additional devices, thus removing the formaldehyde in an environment-friendly way. The preparation method is simple in technology, fewer in steps and easy to operate, thus being suitable for industrial production.

Description

technical field [0001] The invention relates to the fields of catalyst preparation and environmental protection, in particular to an integral formaldehyde room temperature oxidation catalyst and a preparation method thereof. Background technique [0002] Formaldehyde is a colorless gas with a strong pungent smell, and is one of the most serious indoor pollutants. It is widely present in various decoration and decoration materials, and has a long release cycle. Long-term exposure of people will cause headache, dizziness, fatigue, decreased immunity, drowsiness, memory loss, mental depression and other phenomena, and will increase the possibility of cancer. For this reason, formaldehyde has been identified as carcinogenic and teratogenic substances by the World Health Organization. GB50325-2010 "Code for Indoor Environmental Control of Civil Construction Engineering" and "Indoor Air Quality Standard" (GB / T18883-2002) promulgated by China stipulate that the hygienic standard f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J23/44B01D53/86B01D53/72
CPCB01D53/8668B01D2258/06B01J23/42B01J23/44B01J37/0203
Inventor 赵伟潘金根张炜仵浩张涵
Owner 宁波智通环保科技有限公司
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