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Method for preparing nano cerium oxide coating on metal carrier

A nano-cerium oxide and metal carrier technology, applied in the direction of nanotechnology, can solve the problems that affect the conversion effect and service life of the post-processing device, the nanomaterials are prone to agglomeration, and the specific surface area is reduced, so as to avoid agglomeration and sintering and improve the catalytic ability , the effect of high specific surface area

Inactive Publication Date: 2016-03-23
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during this process, nanomaterials are prone to agglomeration, which reduces the specific surface area and loses its due effect.
In addition, in the prior art, the bonding force between the metal carrier and the catalyst coating is poor, which seriously affects the conversion effect and service life of the post-treatment device

Method used

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  • Method for preparing nano cerium oxide coating on metal carrier
  • Method for preparing nano cerium oxide coating on metal carrier
  • Method for preparing nano cerium oxide coating on metal carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as Figure 1-3 The metal foam carrier shown is used as the test object. Firstly, it is pretreated, and the technological process is electrochemical degreasing, electrochemical activation, and weak acid erosion. The parameters of the electrochemical degreasing process are shown in Table 1. Degrease the anode for 1min, then rinse it with clean water. The electroactivation process is to immerse the carrier in 50ml / L dilute sulfuric acid solution to maintain the activity of the carrier surface, and conduct the electrodeposition cerium oxide coating test within 10 minutes.

[0025]

[0026] The composition of the plating solution used in the electrodeposition process is cerium sulfate 0.05mol / L, sodium sulfate 0.5mol / L, additive 1ml / L, ethanol 40% solvent, deionized water 60% solvent, and the temperature of the plating solution is room temperature. The above-mentioned pretreated carrier is put into the plating solution as an anode, and a stainless steel electrode ...

Embodiment 2

[0028] Such as Figure 1-3 The metal fiber carrier shown is used as the test object. Firstly, it is pretreated, and the technological process is electrochemical degreasing, electrochemical activation, and weak acid erosion. The parameters of the electrochemical degreasing process are shown in Table 1. Degrease the cathode for 3 minutes, then rinse it with clean water. The electroactivation process is to immerse the carrier in 50ml / L dilute sulfuric acid solution to maintain the activity of the carrier surface, and conduct the electrodeposition cerium oxide coating test within 10 minutes.

[0029] The composition of the plating solution used in the electrodeposition process is cerium nitrate 1mol / L, sodium nitrate 0.5mol / L, additive 8ml / L, ethanol 10% solvent, deionized water 90% solvent, and the temperature of the plating solution is 40°C. The above-mentioned pretreated carrier is put into the plating solution as a cathode, and the cathode adopts a glassy carbon electrode. ...

Embodiment 3

[0031] The metal honeycomb carrier was used as the test object. Firstly, it is pretreated, and the technological process is electrochemical degreasing, electrochemical activation, and weak acid erosion. The parameters of the electrochemical degreasing process are shown in Table 1. Degrease the cathode and anode for 3 minutes and 1 minute respectively, and then rinse them with clean water. The electroactivation process is to immerse the carrier in 50ml / L dilute sulfuric acid solution to maintain the activity of the carrier surface, and conduct the electrodeposition cerium oxide coating test within 10 minutes.

[0032] The plating solution used in the electrodeposition process consists of cerium acetate 0.1mol / L, sodium acetate 0.5mol / L, additive 2ml / L, ethanol 60% solvent, deionized water 40% solvent, and the temperature of the plating solution is room temperature. The above-mentioned pretreated carrier is put into the plating solution as a cathode, and the cathode adopts a s...

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Abstract

The invention relates to a method for preparing a nano cerium oxide coating on a metal carrier. The method is characterized in that a cerium oxide layer grows on a metal matrix directly through an electrochemical deposition method, the thickness of the deposition layer is 1-50 micrometers and is adjustable, the prepared cerium oxide deposition layer is of a nano sheet structure, and the thickness of the prepared cerium oxide deposition layer is 5-100 nm. The specific surface area of the deposition layer is large, the binding force between the deposition layer and the matrix is high, and the effect is superior to that of an ordinary coating technique, so that the method has great practical value.

Description

technical field [0001] The invention relates to a method for preparing a nano-cerium oxide coating on a metal carrier. The nano-cerium oxide material prepared by the method has unique optical and electrical properties and is used in magnetic materials, catalytic materials, hydrogen storage materials, optical glass and light guides. Fiber and other fields have a wide range of applications. Background technique [0002] Due to their small size and large specific surface area, nanomaterials exhibit many unique properties in chemistry, optics, biology, and electricity. In addition to the advantages of general nanomaterials, rare earth nanomaterials also have the characteristics of high chemical activity, strong redox ability, and variable coordination numbers. It has broad application prospects in the fields of magnetic materials, catalytic materials, hydrogen storage materials, optical glass and optical fibers. Therefore, studying its preparation method and exploring its appl...

Claims

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Application Information

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IPC IPC(8): C25D3/54C25D5/48B82Y40/00
CPCC25D3/54B82Y40/00C25D5/48
Inventor 许德超崔龙王金兴王丹米新艳安宇鹏张克金
Owner CHINA FIRST AUTOMOBILE
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