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A kind of photo-assisted thermal catalyst and its preparation method and application

A light-assisted and catalyst technology, applied in the field of light-assisted thermal catalyst and its preparation, can solve the problem that the light-off temperature is difficult to further reduce, achieve good oxygen storage and release performance, improve performance, and facilitate the reaction

Active Publication Date: 2022-07-26
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that it is difficult to further reduce the light-off temperature of the catalyst in the prior art to catalyze the combustion of small molecular hydrocarbons such as methane and CO, thereby providing a light-assisted thermal catalyst and its preparation method and application

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  • A kind of photo-assisted thermal catalyst and its preparation method and application
  • A kind of photo-assisted thermal catalyst and its preparation method and application
  • A kind of photo-assisted thermal catalyst and its preparation method and application

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Embodiment 1

[0041] This embodiment provides a photo-assisted thermal catalyst, which includes a first active component, a second active component and a carrier, the first active component is Ce and Pd, the second active component is Mn, and the carrier is elkite nanometer Tubes (HNTs).

[0042] The preparation method of the above-mentioned light-assisted thermal catalyst comprises the following steps,

[0043] Take 2g angstrom nanotubes, disperse them in 200ml deionized water, heat the water bath to 30°C, and then bubbling argon to exhaust the air for 30min, add 1mmol / ml 1ml Ce(NO) 3 ) 3 Aqueous solution, then add 1mmol / ml 1ml NaOH aqueous solution, adjust pH to 10, after stirring evenly, add 0.1mmol / ml 0.5ml KMnO in turn 4 Aqueous solution and 2mmol / ml 0.5mlPd(NO 3 ) 2 aqueous solution. Under the protective atmosphere of argon, stir at room temperature for 60 minutes to obtain a precipitate, which is centrifuged, washed and dried, and then sintered at a high temperature of 500 °C fo...

Embodiment 2

[0049] This embodiment provides a photo-assisted thermal catalyst, which includes a first active component, a second active component and a carrier, the first active component is Ce and Pd, the second active component is Mn, and the carrier is elkite nanometer Tubes (HNTs).

[0050] The preparation method of the above-mentioned light-assisted thermal catalyst comprises the following steps,

[0051] Take 1 g of angstrom nanotubes, disperse them in 100 ml of deionized water, heat the water bath to 30 °C, and then bubbling argon to exhaust the air for 30 min, and add 2 mmol / ml 1 ml Ce (NO 3 ) 3 Aqueous solution, then add 2mmol / ml 1ml NaOH aqueous solution, adjust pH to 10, after stirring evenly, add 0.2mmol / ml 0.5ml KMnO successively 4 Aqueous solution and 2mmol / ml 1ml Pd(NO 3 ) 2 solution. Under the protective atmosphere of argon, stir at room temperature for 60 minutes to obtain a precipitate. After the precipitate is centrifuged, washed, and dried, it is sintered at a hig...

Embodiment 3

[0053] This embodiment provides a photo-assisted thermal catalyst, which includes a first active component, a second active component and a carrier, the first active component is Ce and Pd, the second active component is Mn, and the carrier is elkite nanometer Tubes (HNTs).

[0054] The preparation method of the above-mentioned light-assisted thermal catalyst comprises the following steps,

[0055] Take 5g angstrom nanotubes, disperse them in 4000ml deionized water, heat the water bath to 30°C, and then bubbling argon to exhaust the air for 30min, add 1mmol / ml 1ml Ce(NO) 3 ) 3 Aqueous solution, then add 1mmol / ml 1ml NaOH aqueous solution, adjust pH to 10, after stirring evenly, add 0.1mmol / ml 0.5ml KMnO in turn 4 Aqueous solution and 2mmol / ml 0.5ml Pd(NO 3 ) 2 aqueous solution. Under an argon protective atmosphere, stir at room temperature for 60 minutes to obtain a precipitate. After the precipitate is centrifuged, washed and dried, it is sintered at a high temperature o...

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Abstract

The invention belongs to the technical field of catalyst preparation, and in particular relates to a light-assisted thermal catalyst and a preparation method and application thereof. The catalyst includes a carrier and an active component, the active component includes a first active component and a second active component, the first active component includes Pd and Ce; the second active component includes Mn. The present invention creatively provides a catalyst suitable for light-assisted thermal catalytic combustion. When the light-assisted thermal catalyst is applied to catalytic combustion, the lattice oxygen of the catalyst itself can be activated, the oxygen overflow can be greatly accelerated, and the crystal lattice of the catalyst itself can be activated. Lattice oxygen reacts with methane, CO and other gases to generate carbon dioxide and water. The oxygen in the reactant is continuously adsorbed on the surface of the catalyst to form chemical adsorption oxygen and then converted into lattice oxygen, thereby ensuring the normal progress of the catalytic combustion reaction.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a light-assisted thermal catalyst and a preparation method and application thereof. Background technique [0002] Catalytic combustion is a technology that uses a catalyst to carry out flameless combustion at a low light-off temperature and oxidatively decompose organic waste gas into carbon dioxide and water. The essence of catalytic combustion is a violent oxidation reaction involving active oxygen. The active components of the catalyst are oxidized by air. When the active oxygen molecules are in contact with the reactant molecules, energy transfer occurs, and the reactant molecules are activated, thereby accelerating the oxidation reaction. Catalytic combustion has the advantages of low light-off temperature, high purification efficiency, and wide adaptability to oxygen concentration range. [0003] The core of catalytic combustion technology is the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/656B01J35/00B01J35/02F23G7/07
CPCB01J23/6562F23G7/07B01J35/396B01J35/393B01J35/50B01J35/39
Inventor 刘大鹏冯锡岚张瑜
Owner BEIHANG UNIV
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