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Preparation method of a nanorod-shaped PT/CEO2 supported catalyst and its application in CO catalytic reaction

A supported catalyst and nanorod-shaped technology, which is applied in the field of preparation of nanorod-shaped Pt/CeO2 supported catalysts, can solve the problem that the dispersion and interaction of noble metal Pd nanoparticles cannot be precisely regulated, and achieve broad industrial application prospects, excellent CO Low-temperature catalytic oxidation performance, low loading effect

Active Publication Date: 2019-04-23
江苏领蓝行碳中和科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods prepare CeO 2 After the carrier is loaded with Pd nanoparticles, although the preparation method is simple, the dispersion of noble metal Pd nanoparticles and their interaction with the carrier cannot be precisely controlled.

Method used

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  • Preparation method of a nanorod-shaped PT/CEO2 supported catalyst and its application in CO catalytic reaction
  • Preparation method of a nanorod-shaped PT/CEO2 supported catalyst and its application in CO catalytic reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Catalyst preparation:

[0026] First add 2.1g of 1,3,5-benzenetricarboxylic acid solid into a mixed solvent of 50mL ethanol and 50mL DMF, stir well until it is completely dissolved to obtain a 1,3,5-benzenetricarboxylic acid solution with a concentration of 100mM, and then add 0.1g PVP solid, continue to stir and mix evenly, add 50mL Ce(NO 3 ) 3 ·6H 2 O in ethanol solution was stirred and reacted at 80°C for 16 hours. After the reaction was completed, the obtained product was centrifuged, washed with ethanol, and dried to obtain a white powder Ce-MOF. Then, 250 mg of the Ce-MOF solid was redispersed in 50 mL of 1 mM H 2 PtCl 6 After stirring, 1.0 g of tetrabutylammonium borohydride was added to carry out the reduction reaction, and the reaction was carried out at room temperature for 30 minutes. After the reaction, the product was centrifuged, washed with ethanol, and dried at 60°C. The product was placed in a muffle furnace, and the temperature was raised to 300°C...

Embodiment 2

[0036] Catalyst preparation:

[0037] First add 1.0g of 1,3,5-benzenetricarboxylic acid solid into a mixed solvent of 50mL ethanol and 50mL deionized water, stir well until it is completely dissolved, and obtain a 1,3,5-benzenetricarboxylic acid solution with a concentration of 47.6mM , then add 0.1g PVP solid, continue to stir and mix evenly, add 50mL, Ce(NO 3 ) 3 ·6H 2 The ethanol solution of O was stirred and reacted at 60° C. for 20 hours. After the reaction was completed, the obtained product was centrifuged, washed with ethanol, and dried to obtain a white powder Ce-MOF. Then, 250 mg of the Ce-MOF solid was redispersed in 50 mL of 1 mM H 2 PtCl 6 After stirring, 1.3 g of tetrabutylammonium borohydride was added to carry out the reduction reaction, and the reaction was carried out at room temperature for 30 minutes. After the reaction, the product was centrifuged, washed with ethanol, and dried at 60°C. The product was placed in a muffle furnace, and the temperature ...

Embodiment 3

[0044] Catalyst preparation:

[0045] First add 2.1g of 1,3,5-benzenetricarboxylic acid solid into a mixed solvent of 50mL ethanol and 50mL DMF, stir well until it is completely dissolved to obtain a 1,3,5-benzenetricarboxylic acid solution with a concentration of 100mM, and then add 0.001g PVP solid, continue stirring and mixing evenly, add 50mL Ce(NO 3 ) 3 ·6H 2 O in ethanol solution was stirred and reacted at 60°C for 24 hours. After the reaction was completed, the obtained product was centrifuged, washed with ethanol, and dried to obtain a white powder Ce-MOF. Then, 250 mg of the Ce-MOF solid was redispersed in 50 mL of 1 mM H 2 PtCl 6 After stirring, 1.3 g of tetrabutylammonium borohydride was added to carry out the reduction reaction, and the reaction was carried out at room temperature for 30 minutes. After the reaction is over, the product is centrifuged, washed with ethanol, and dried. The obtained product is placed in a muffle furnace, and the temperature is rai...

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Abstract

The invention discloses a nanorod-shaped Pt / CeO 2 The preparation method of the supported catalyst uses a Ce-containing metal-organic framework as a template / precursor, using the porosity and large specific surface area of ​​the metal-organic framework to load metal Pt nanoparticles onto its surface, followed by drying and high-temperature roasting. Thus, nanorod-shaped Pt / CeO is obtained for low-temperature catalytic oxidation of CO. 2 supported catalyst. The preparation method is simple and reproducible. The prepared catalyst has the advantages of low metal Pt loading, good dispersion, and controllable microscopic morphology of the catalyst. The catalyst also has excellent low-temperature catalytic oxidation performance of CO. Its application In the CO catalytic reaction, at a suitable reaction temperature, the conversion rate of CO can reach 100%, which has broad industrial application prospects.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a nanorod-shaped Pt / CeO 2 Preparation method of supported catalyst and the nanorod Pt / CeO 2 Application of supported catalysts in the low-temperature catalytic oxidation of carbon monoxide (CO). Background technique [0002] Carbon monoxide (CO) is a typical flammable and toxic compound. It is difficult to react with other substances in the air, but it is very easy to combine with heme protein in the human body. When the concentration of carbon monoxide in the air reaches 400ppm, CO poisoning will occur, which can cause serious death. At present, a large amount of CO emissions mainly come from the incomplete combustion of carbon-containing substances such as oil and coal, including industrial activities such as thermal power plants, industrial boilers, metallurgical plants, oil refineries, chemical plants, and steel plants. It also produces a large amount of CO, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/63B01J35/02B01D53/86B01D53/62B01J35/00
CPCB01D53/864B01J23/63B01D2257/502B01J35/40Y02A50/20
Inventor 詹国武杨欣周树锋
Owner 江苏领蓝行碳中和科技有限公司
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