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Method for preparing nanometer lanthanum oxide coating on metal carrier

A technology of nano-lanthanum oxide and metal carrier, which is applied in the direction of chemical instruments and methods, separation methods, chemical/physical processes, etc. It can solve the problem of affecting the transformation effect and service life of post-processing devices, the easy agglomeration of nano-materials, and the reduction of specific surface area, etc. problem, to achieve the effect of benefiting conversion efficiency and reaction rate, improving catalytic ability, and simple production process

Inactive Publication Date: 2016-03-30
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 nanometer lanthanum oxide coating on metal carrier
  • Method for preparing nanometer lanthanum oxide coating on metal carrier
  • Method for preparing nanometer lanthanum oxide coating on metal carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The metal foam 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 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 lanthanum oxide coating test within 10 minutes.

[0025]

[0026]The composition of the plating solution used in the electrodeposition process is lanthanum 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 is used as the cathod...

Embodiment 2

[0028] A metal fiber 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 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 lanthanum oxide coating test within 10 minutes.

[0029] The composition of the plating solution used in the electrodeposition process is lanthanum nitrate 1mol / L, sodium sulfate 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. Connect the pulse po...

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. Among them, the electrochemical degreasing process parameters are as follows: Figure 4 shown. 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 lanthanum oxide coating test within 10 minutes.

[0032] The composition of the plating solution used in the electrodeposition process is lanthanum acetate 0.1mol / L, sodium sulfate 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 ca...

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Abstract

The invention relates to a method for preparing a nanometer lanthanum oxide coating on a metal carrier. The method is characterized in that a lanthanum oxide layer directly grows on a metal substrate through a pulse electrochemical deposition method, and the thickness of the deposition layer is adjustable within the range of 1-50 microns. The prepared lanthanum oxide deposition layer is of a nanometer flaky structure, and the thickness is 5-20 nm. The specific surface area of the deposition layer is large and has a high bonding capacity with the substrate, and the effect is better than a common coating process. Therefore, the method for preparing the nanometer lanthanum oxide coating on the metal carrier has high practical value.

Description

technical field [0001] The invention relates to a method for preparing a nano-lanthanum oxide coating on a metal carrier. The nano-lanthanum 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 it...

Claims

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Application Information

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IPC IPC(8): C25D3/54C25D5/48B01J23/63B01D53/94
CPCC25D3/54B01D53/944B01J23/63B01J2523/00C25D5/48B01J2523/3706B01J2523/824B01J2523/828
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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