Loaded Pd catalyst, and preparation method and application thereof

A supported catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of low selectivity, reduce the reaction temperature, and the preparation method is simple and effective. Good for adsorption and activation

Active Publication Date: 2017-08-08
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention overcomes the deficiency of pure thermal catalysis to remove CO / NO, improves the low-temperature activity of the catalyst and the 2 selectivity, and provide a supported Pd catalyst and its preparation method and application, which can improve the performance of Pd catalyst for catalytic removal of CO / NO by using photothermal coupling by loading Pd on a semiconductor carrier, and solve the problem of conventional Pd Catalysts and simple supports need to be catalyzed at higher temperatures to catalyze the CO / NO reaction and N 2 The problem of low selectivity, and the preparation method of the catalyst is simple and easy, which is conducive to popularization and application

Method used

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  • Loaded Pd catalyst, and preparation method and application thereof
  • Loaded Pd catalyst, and preparation method and application thereof
  • Loaded Pd catalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0026] Example 1 1%wt Pd / LaFeO 3 Catalyst preparation

[0027] Dissolve 1.8 g of PVP in 40 mL of isopropanol, mix and stir until completely dissolved, then add 1.5 mL of nitric acid to adjust the solution to acidity, and continue stirring to add 2.02 g of Fe(NO 3 ) 3 9H 2 O and 1.6246g of La(NO 3 ) 3 ·6H 2 O, continue to stir vigorously for more than 10h until the solution becomes yellow and viscous, then transfer to an oven, fully dry at 80°C, transfer to a muffle furnace and gradually heat up to 600°C, calcined for 2h, to obtain LaFeO 3 solid powder.

[0028] Weigh 1.0g LaFeO 3 Solid powder, add 8 mL of PdCl at a concentration of 1.2 mg / mL 2 solution, and introduced 100mL deionized water, stirred for 30min, ultrasonicated for 15min, adjusted the pH value of the solution to about 10, and then slowly added NaBH with a concentration of 0.1mol / L 4 Mix the solution with NaOH to excess, so that Pd is completely reduced, centrifuge, wash with deionized water until the ion ...

Embodiment 22

[0032] Example 2 2%wt Pd / LaFeO 3 Catalyst preparation

[0033] Dissolve 1.8 g of PVP in 40 mL of isopropanol, mix and stir until completely dissolved, then add 1.5 mL of nitric acid to adjust the solution to acidity, and continue stirring to add 2.02 g of Fe(NO 3 ) 3 9H 2 O and 1.6246g of La(NO 3 ) 3 ·6H 2 O, continue to stir vigorously for more than 10h until the solution becomes yellow and viscous, then transfer to an oven, fully dry at 80°C, then transfer to a muffle furnace and gradually heat up to 600°C, calcined for 2h, to obtain LaFeO 3 solid powder.

[0034] Weigh 1.0g LaFeO 3 Solid powder, add 16 mL of PdCl at a concentration of 1.2 mg / mL 2 solution, and introduced 200mL deionized water, stirred for 30min, ultrasonicated for 15min, adjusted the pH value of the solution to about 10, and then slowly added NaBH with a concentration of 0.1mol / L 4 Mix the solution with NaOH to an excess to completely reduce Pd, centrifuge, wash with deionized water until the ion c...

Embodiment 3

[0035] The performance evaluation of embodiment 3 catalyst

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Abstract

The invention discloses a loaded Pd catalyst, and a preparation method and application thereof. Pd nano particles are loaded onto a LaFeO3 semiconductor carrier with a light absorption function to prepare the loaded Pd catalyst, a flexible LED light strip is introduced into a catalytic converter with the loaded Pd catalyst, and CO/NO can be efficiently removed in a catalysis manner by utilizing the optical-thermal coupling effect. Compared with the conventional thermal catalytic reaction, the application temperature of the catalyst can be greatly reduced by virtue of the optical-thermal coupling method; and moreover, the flexible LED light strip can better resist the vibration compared with the conventional lamp tube, and the loaded Pd catalyst can be widely applied to the purification of automobile exhaust gas and the removal of NO and CO.

Description

technical field [0001] The invention belongs to the field of environmental protection and air purification, and in particular relates to a supported Pd catalyst and its preparation method and application. The supported Pd catalyst can improve the catalytic removal effect of CO and NO through photothermal coupling. Background technique [0002] With the rapid increase of urban vehicles, vehicle exhaust emissions have become one of the main sources of air pollution in cities. The emission of automobile exhaust not only causes great harm to our life and environment, but also harms human health which cannot be ignored. Atmospheric self-purification ability is no longer enough to degrade automobile exhaust, so it is imminent to solve automobile exhaust pollution and restore a clean environment to human beings. [0003] Scientific analysis shows that automobile exhaust contains hundreds of different compounds, among which pollutants include solid suspended particles, carbon monox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/16B01D53/86B01D53/56B01D53/62
CPCB01D53/925B01D2258/06B01J23/002B01J23/894B01J37/16Y02A50/20
Inventor 戴文新程刚陈旬付贤智员汝胜丁正新
Owner FUZHOU UNIV
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