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Supported active carbon catalytic material capable of eliminating formaldehyde at room temperature and preparation method thereof

A technology for eliminating formaldehyde and catalytic materials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problem of catalyst service life evaluation, can not fully reflect the purification effect, etc., to achieve good water vapor resistance and life effect.

Inactive Publication Date: 2013-05-01
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the reaction temperature is 40°C, the highest conversion rate of formaldehyde can reach 94.6%, but the service life of the catalyst has not been evaluated, which cannot fully reflect the purification effect of the catalyst on formaldehyde

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare 10ml of a mixed solution of nitric acid and 10% hydrogen peroxide with a concentration of 10%, impregnate Φ15mm and 50mm long activated carbon in it for 2h, take it out and dry it at 120°C for 4h to obtain pretreated activated carbon. Weigh 0.2g of lanthanum nitrate and dissolve it in 6ml of deionized water to form a solution. Place the pretreated activated carbon in the solution and soak it for 2 hours, then dry it in an oven at 120°C for 4 hours. The dried activated carbon was calcined at 300° C. for 3 h under vacuum (or nitrogen protection) to obtain modified activated carbon.

[0026] Prepare 6ml of chloroauric acid solution with a concentration of 0.008g / ml, impregnate modified activated carbon at 60°C for 2h; prepare NaBH with a concentration of 0.05g / ml 4 Solution 15ml, activated carbon was reduced at 20°C for 2h, washed with deionized water, filtered, and dried at 100°C for 4h to obtain a finished catalytic material. where Au: La 2 o 3 : activated car...

Embodiment 2

[0029] Prepare 10ml of a mixed solution of nitric acid and 10% hydrogen peroxide with a concentration of 10%, impregnate Φ15mm and 50mm long activated carbon in it for 2h, take it out and dry it at 120°C for 4h to obtain pretreated activated carbon. Weigh 0.10g of manganese nitrate and dissolve it in 6ml of deionized water to form a solution. Place the pretreated activated carbon in the solution and soak it for 2 hours, then dry it in an oven at 120°C for 4 hours. The dried activated carbon was calcined at 300° C. for 3 h under vacuum (or nitrogen protection) to obtain modified activated carbon.

[0030] Prepare 6ml of chloroauric acid solution with a concentration of 0.008g / ml, impregnate modified activated carbon at 60°C for 2h; prepare NaBH with a concentration of 0.05g / ml 4 Solution 15ml, activated carbon was reduced at 20°C for 2h, washed with deionized water, filtered, and dried at 100°C for 4h to obtain a finished catalytic material. where Au:MnO 2 : activated carbon ...

Embodiment 3

[0033] Prepare 10ml of a mixed solution of nitric acid and 10% hydrogen peroxide with a concentration of 10%, impregnate Φ15mm and 50mm long activated carbon in it for 2h, take it out and dry it at 120°C for 4h to obtain pretreated activated carbon. Weigh 0.195g of neodymium nitrate and dissolve it in 6ml of deionized water to make a solution. Put the pretreated activated carbon in the solution and soak it for 2 hours, then dry it in an oven at 120°C for 4 hours. The dried activated carbon was calcined at 300° C. for 3 h under vacuum (or nitrogen protection) to obtain modified activated carbon.

[0034] Prepare 6ml of chloroauric acid solution with a concentration of 0.008g / ml, impregnate modified activated carbon at 60°C for 2h; prepare NaBH with a concentration of 0.05g / ml 4 Solution 15ml, activated carbon was reduced at 20°C for 2h, washed with deionized water, filtered, and dried at 100°C for 4h to obtain a finished catalytic material. where Au:Nd 2 o 3 : activated carb...

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PUM

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Abstract

The invention discloses a supported active carbon catalytic material capable of eliminating formaldehyde at room temperature. The catalytic material is characterized by comprising, by mass, 0.1 to 2% of a noble metal active component, 1 to 20% of a metal oxide and 78 to 98.9% of an active carbon supporter. The invention also discloses a preparation method for the supported active carbon catalytic material capable of eliminating formaldehyde at room temperature. The method is characterized by comprising the following steps: pretreatment of active carbon; modification of active carbon; loading of the active component, and washing, filtering and drying so as to prepare the supported active carbon catalytic material capable of eliminating formaldehyde at room temperature. The catalytic material has the double functions of adsorption and catalytic oxidation at normal temperature during elimination of formaldehyde at room temperature; under the conditions of room temperature and a space velocity of 10000 / h, the removal rate of formaldehyde by the catalytic material is more than 98.2%, and formaldehyde becomes harmless H2O and CO through catalytic oxidation, thereby realizing green elimination of formaldehyde; moreover, the catalytic material has good resistance to water vapor and a long service life, and the preparation method for the material is simple and is easy to operate.

Description

technical field [0001] The invention relates to a catalytic material and a preparation method thereof, in particular to a supported activated carbon catalytic material for eliminating formaldehyde at room temperature and a preparation method thereof. Background technique [0002] In newly renovated houses and workplaces, harmful gas pollution, especially formaldehyde gas, caused by the extensive use of a large number of panel furniture and decorative materials poses a serious threat to human survival and health. Formaldehyde is a colorless gas with a strong pungent odor, which can bind to proteins. After inhalation of high concentrations of formaldehyde, there will be severe irritation of the respiratory tract, edema, eye stinging, headache and other adverse reactions, which may be life-threatening in severe cases. The formaldehyde released in decoration materials mainly comes from adhesives and coatings, which have poor volatility and can be released slowly for more than te...

Claims

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Application Information

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IPC IPC(8): B01J23/66B01J23/63B01J20/20B01J20/32A62D3/38A62D101/28
Inventor 周洁姚炜刘洋张豪杰何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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