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Preparation method of CuO/CeO2 mesoporous nanosheet

A nanosheet and mesoporous technology, applied in chemical instruments and methods, mechanical equipment, machines/engines, etc., can solve problems such as few catalysts, achieve the effect of improving redox performance, oxidation activity, and intrinsic activity

Pending Publication Date: 2019-05-31
柴委
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Problems solved by technology

[0005] Although a great deal of research has been done on ceria-based soot oxidation catalysts, there have been few studies involving CuO-CeO within mesoporous nanosheets. 2 Research on Catalysts

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  • Preparation method of CuO/CeO2 mesoporous nanosheet
  • Preparation method of CuO/CeO2 mesoporous nanosheet
  • Preparation method of CuO/CeO2 mesoporous nanosheet

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Embodiment Construction

[0027] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0028] A CuO / CeO 2 The preparation method of mesoporous nanosheets, the present invention adopts the method combining hydrothermal and wet impregnation to CuO / CeO 2 Mesoporous nanosheets were prepared; first, 1.3g Ce(NO 3 ) 2 ·6H 2 O. Put a transparent solution of 3.0g hexamethylenetetramine, 5.0mL acetic acid and 60mL distilled water into a 100mL autoclave, and let it stand at 170°C for 15h. Then, the obtained precipitate was filtered, washed with ethanol, and then dried at 100 °C for 10 h to obtain CeO 2 Mesoporous nanosheets. Then, with an appropriate amount of Cu(NO 3 ) 2 ·3H 2 Add 0.3g CeO to 5.0mL solution of O 2 Mesoporous nanosheets were left at room temperature for 12 h, then dried at 100 °C for 12 h, and finally calcined at 500 °C for 2.0 h. The resulting product is marked as CuCeX, where X is the mass percent, which is def...

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Abstract

The invention discloses a preparation method of a CuO / CeO2 mesoporous nanosheet. The CuO / CeO2 mesoporous nanosheet is prepared successfully by the combination of a hydrothermal process and a wet impregnation process. The objective is to improve oxidative reduction performance of CeO2 by introducing CuO, and improve intrinsic activity of a catalyst by giving play to synergy of the components, and improve soot purification activity by enlarging the contact interface of soot particles, the catalyst and gas reactants (such as NO and O2). As expected, the attained catalyst has high activity and strong stability for soot oxidation, and has a potential application prospect under actual working conditions.

Description

technical field [0001] The invention relates to the field of environmental catalysis, in particular to a CuO / CeO 2 Preparation method of mesoporous nanosheets. Background technique [0002] In today's field of environmental catalysis, the development of highly active soot purification catalysts has become a major research hotspot. Soot particles produced by diesel engines are usually emitted into the environment together with nitrogen oxides and carbon monoxide, thereby causing serious harm to the environment and public health. Today, treating soot from a self-regenerating diesel vehicle with a catalytic oxidation module is considered one of the most effective aftertreatment technologies. However, the current technical bottleneck is the development of catalysts with high catalytic activity, which requires overcoming two challenges. One is to rationally design catalysts with unique structures to increase the active area; Intrinsic activity of the catalyst to achieve deep o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J35/10B01J35/02F01N3/20B01J35/00
Inventor 柴委王金国刘春丽杨帅锋门勇
Owner 柴委
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