Catalyst for completely removing formaldehyde in indoor air at room temperature

A room temperature, formaldehyde technology, applied in the preparation of mesoporous materials, the above-mentioned mesoporous materials, high-efficiency humidity-resistant room temperature removal of formaldehyde in the field of catalysis, can solve the problem of expensive catalysts, etc., to achieve excellent economy, high stability and long-term performance , high stability effect

Inactive Publication Date: 2012-12-26
SHANGHAI NIUYI NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high Pt content (12%) in the catalyst makes the price of the catalyst expensive, so this catalyst can only be used in special occasions such as military industry or aerospace
Chinese patent CN1698932A uses a gold-loaded rare earth oxide or an adsorbed composite oxide catalyst, which can achieve better results at a temperature of 80-100 ° C. However, high humidity and heat energy input are the biggest obstacles to the wide application of this catalyst

Method used

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  • Catalyst for completely removing formaldehyde in indoor air at room temperature
  • Catalyst for completely removing formaldehyde in indoor air at room temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of Mesoporous CeO2 Nanomaterials

[0032] Add 10g of P123 containing 0.01mol Ce(NO 3 ) 4 Add 40ml of trioctylamine to 250ml of aqueous solution under constant stirring to obtain a sol, then seal it and crystallize at 50°C for 24h, then transfer the sol to a kettle with a polytetrafluoroethylene liner, Hydrothermal at 100°C for 24h, the resulting product was repeatedly washed with deionized water and ethanol, then placed in an electric vacuum oven and dried in vacuum at 100°C for 24h; finally put into a muffle furnace and calcined at 500°C for 6h to remove the template , the obtained powder is the mesoporous cerium oxide sample. Small angle XRD and HRTEM analysis prove CeO 2 The pore size is 2nm.

[0033] The preparation of the mesoporous cerium dioxide nanomaterial loaded on the honeycomb ceramic carrier involves weighing a certain amount of doped mesoporous ceria nanomaterial, and adding a certain proportion of deionized water and binder. According to ...

Embodiment 2

[0039] Preparation of Mesoporous CeO2 Nanomaterials. Add 10g of P123 containing 0.01mol Ce(NO 3 ) 4 Add 40ml of trioctylamine to 250ml of aqueous solution under constant stirring to obtain a sol, then seal it and crystallize at 50°C for 24h, then transfer the sol to a kettle with a polytetrafluoroethylene liner, Hydrothermal at 100°C for 24h, the obtained product was repeatedly washed with deionized water and ethanol, then placed in a vacuum oven and dried in vacuum at 100°C for 24h; finally put into a muffle furnace and calcined at 500°C for 6h to remove the template. The obtained powder is the mesoporous cerium oxide sample. Small angle XRD and HRTEM analysis prove CeO 2 The pore size is 2nm.

[0040] The preparation of the mesoporous cerium dioxide nanomaterial loaded on the honeycomb ceramic carrier involves weighing a certain amount of doped mesoporous ceria nanomaterial, and adding a certain proportion of deionized water and binder. According to the requirements of ...

Embodiment 3

[0046] The preparation of the Pt-loaded mesoporous ceria nanomaterial is the same as in Example 2.

[0047] The performance test of the catalyst stability experiment is the same as in Example 1, the continuous test time is 120 days, and the formaldehyde at the entrance is 5 mg / m 3 , the outlet concentration of formaldehyde is 0.001mg / m 3 .

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Abstract

The invention provides a high-efficiency and humidity-resisting catalysis technology for removing formaldehyde at room temperature and relates to the field of catalysis and environmental protection. The catalysis technology is characterized in that honeycomb ceramic is used as a carrier, preloading mesoporous cerium dioxide (CeO2) is used as a basal body, and a back loading platinum (Pt) is used as an active component. The mesoporous CeO2 is characterized in that the diameter of every meso pore is 0.5-3nm. The weight ratio of the Pt to the CeO2 is 0-5 percent. The integral catalyst provided by the invention is high in efficiency and stability and has no side effects under a real environment with room temperature and normal humidity, and can be widely used for removing formaldehyde pollutants in various microenvironments.

Description

technical field [0001] The invention is a catalytic technology for removing formaldehyde at room temperature with high efficiency and humidity resistance, and relates to the fields of environmental protection, air pollutant control, environmental protection and the like. It is characterized in that honeycomb ceramics are used as the carrier, and the mesoporous ceria CeO is first loaded 2 As the substrate, platinum (Pt) is loaded as the active component later. Mesoporous CeO 2 The matrix is ​​characterized by mesopores with a pore diameter of 0.5-3 nm. Pt and CeO 2 The weight ratio is 0-5%. [0002] The present invention also relates to the preparation method of the above-mentioned mesoporous material. [0003] The invention also relates to the application of the above-mentioned mesoporous material to various environmental protection and treatment of air formaldehyde pollutants. Background technique [0004] The International Agency for Research on Cancer (IARC) of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/63B01J35/04B01D53/86B01D53/72
Inventor 唐文明
Owner SHANGHAI NIUYI NEW ENERGY TECH
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