Pt/Al2O3 catalyst and application thereof in room-temperature catalytic oxidation of formaldehyde

A catalyst, room temperature technology, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of high required temperature, inconvenient use, inability to eliminate formaldehyde, etc., achieving good stability, low environmental cost, The effect of good stability

Inactive Publication Date: 2014-02-26
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature is 80-100°C, but additional external heating conditions are required, which is inconvenient to use
The preparation process of the catalyst is relatively simple, the cost is low, and there is no secondary pollution, but the temperature required for the complete conversion of formaldehyde is relatively high, and it cannot be used for the elimination of formaldehyde at room temperature

Method used

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  • Pt/Al2O3 catalyst and application thereof in room-temperature catalytic oxidation of formaldehyde
  • Pt/Al2O3 catalyst and application thereof in room-temperature catalytic oxidation of formaldehyde
  • Pt/Al2O3 catalyst and application thereof in room-temperature catalytic oxidation of formaldehyde

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prebody 28mg Pt 2 (dba) 3 Add 100ml of propylene carbonate, and react in a stainless steel reactor at a hydrogen pressure of 3.0MPa and room temperature (25°C) for 2 hours to obtain a reaction solution, namely 100ml of a Pt nanoparticle solution; 1.0g of Al 2 o 3 The carrier was added to the obtained Pt nanoparticle solution, stirred overnight under the action of electromagnetic force stirring, filtered, and the filter cake was roasted at 200 ° C for 2 hours to obtain 1% Pt / Al 2 o 3 catalyst.

Embodiment 2

[0028] Prebody 28mg Pt 2 (dba) 3 Add 100ml of propylene carbonate, and react in a stainless steel reactor at a hydrogen pressure of 3.0MPa and room temperature (25°C) for 2 hours to obtain a reaction solution, namely 100ml of a Pt nanoparticle solution; 1.0g of Al 2 o 3 The carrier was added to the obtained Pt nanoparticle solution, stirred overnight under the action of electromagnetic force stirring, filtered, and the filter cake was calcined at 300°C for 2 hours to obtain 1%Pt / Al 2 o 3 catalyst.

Embodiment 3

[0030] Prebody 28mg Pt 2 (dba) 3 Add 100ml of propylene carbonate, and react in a stainless steel reactor at a hydrogen pressure of 3.0MPa and room temperature (25°C) for 2 hours to obtain a reaction solution, namely 100ml of a Pt nanoparticle solution; 1.0g of Al 2 o 3The carrier was added to the obtained Pt nanoparticle solution, stirred overnight under the action of electromagnetic force stirring, filtered, and the filter cake was calcined at 400°C for 2 hours to obtain 1%Pt / Al 2 o 3 catalyst.

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PUM

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Abstract

The invention discloses a Pt / Al2O3 catalyst and an application thereof in room-temperature catalytic oxidation of formaldehyde. The Pt / Al2O3 catalyst is prepared by a method comprising the following steps: adding Pt2(dba)3 into propylene carbonate to obtain a mixture, stirring the mixture at the hydrogen atmosphere of 1-3MPa at room temperature for reaction, stop stirring after 1-2 hours and taking out the solution to obtain a solution containing Pt nano particles; and mixing the obtained solution containing Pt nano particles with an Al2O3 carrier, magnetically stirring so that the Pt nano particles are completely adsorbed on the Al2O3 carrier, filtering and roasting to obtain the Pt / Al2O3 catalyst. By virtue of the Pt / Al2O3 catalyst, formaldehyde can be completely eliminated at room temperature and the stability of the catalyst can be fully improved without adding alkali additives. The Pt / Al2O3 catalyst has good low-temperature catalytic activity and relatively high practical value.

Description

technical field [0001] The present invention relates to a kind of Pt / Al 2 o 3 Catalyst and its application in the catalytic oxidation of formaldehyde, especially in the catalytic oxidation of formaldehyde at room temperature. Background technique [0002] Formaldehyde (HCHO), also known as formaldehyde, is a kind of volatile organic compounds (VOCs), a colorless, irritating gas with a strong odor. It is widely used in renovated living rooms, shopping malls, hotels, and offices. Due to the large amount of wood-based panels used in decoration and furniture manufacturing, and the production of wood-based panels requires the use of a large amount of adhesives made of highly toxic formaldehyde. Due to the release period of formaldehyde in the adhesive Generally as long as 15 years, causing formaldehyde to become the main pollutant in the indoor air. The concentration limit of formaldehyde pollutants in indoor air stipulated by my country's national standards is 0.08mg / m 3 . ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01D53/86B01D53/72
Inventor 严新焕敖平
Owner ZHEJIANG UNIV OF TECH
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