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Catalytic converter for motorcycle exhaust and manufacturing method thereof

The technology of a catalytic converter and a manufacturing method, which is applied in the field of catalytic converters, can solve the problems of low catalytic activity, achieve the effects of fast light-off rate, good thermal stability and durability, and meet the requirements of exhaust gas purification

Active Publication Date: 2016-06-08
浙江欧信环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pd catalyst has good high temperature resistance and CO and HC oxidation activity, but CO and HC in motorcycle exhaust are used as reducing agents to reduce NO x In the reaction, its catalytic activity is relatively low

Method used

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  • Catalytic converter for motorcycle exhaust and manufacturing method thereof
  • Catalytic converter for motorcycle exhaust and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: a kind of motorcycle tail gas catalytic converter, this catalytic converter is made up of substrate and the catalyst coating that is coated on the substrate, and described catalyst coating is made of catalyst carrier, oxygen storage material, catalytically active component and catalyst Auxiliary composition,

[0038] The substrate is an S-shaped metal honeycomb carrier or a concentric metal honeycomb carrier (the substrate of the catalytic converter has a hole density of 31 holes / cm 2 S-shaped or concentric circular metal honeycomb carrier, the specification is Φ20×30 / 200);

[0039] The catalyst carrier is γ-Al 2 o 3 、TiO 2 , OSM (Oxygen Storage Material), La-Al 2 o 3 , SiO 2 -Al 2 o 3 One of, or a mixture of two or more, the weight of the catalyst carrier accounts for 30% to 60% of the total weight of the catalyst coating (this value can be arbitrarily selected between 30% and 60%, for example, 30% Or 40% or 45% or 50% or 60%, wherein, the presen...

Embodiment 2

[0047] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that the weight ratio of the catalyst carrier to the oxygen storage material is 7:3 (the catalyst carrier accounts for 56% of the total weight of the catalyst coating; The oxygen storage material accounts for 24% of the total weight percentage of the catalyst coating; the catalytic active component accounts for 10% of the total weight percentage of the catalyst coating; the catalyst aid accounts for 10% of the total weight percentage of the catalyst coating), and the catalytic active component is Pt , one of Ni oxides, or a mixture of Pt and Ni oxides;

Embodiment 3

[0048] Embodiment 3: This embodiment is basically the same as Embodiment 1, except that the weight ratio of the catalyst carrier to the oxygen storage material is 3:7 (the catalyst carrier accounts for 24% of the total weight percentage of the catalyst coating; The oxygen storage material accounts for 56% of the total weight percentage of the catalyst coating; the catalytic active component accounts for 10% of the total weight percentage of the catalyst coating; the catalyst auxiliary agent accounts for 10% of the total weight percentage of the catalyst coating), and the catalytic active component is Rh , Co oxides, or a mixture of Rh and Co oxides.

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PUM

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Abstract

The present invention relates to a catalytic converter for exhaust gas purification, more specifically to a motorcycle exhaust catalytic converter and a manufacturing method thereof. The catalytic converter is composed of a substrate and a catalyst coating coated on the substrate. The catalyst The coating is composed of a catalyst carrier, an oxygen storage material, a catalytically active component and a catalyst aid, and the oxygen storage material is Ce x Zr (1-x) La Y O m One of them, or a mixture of two or more, the catalytically active component is one of the oxides of Pd, Pt, Rh, Co, Ni, or a mixture of two or more oxides, the motorcycle tail gas catalyst of the present invention The catalyst coating in the converter contains a variety of carriers and oxygen storage materials loaded with corresponding active components, so the active components are fully dispersed to increase the contact surface between the exhaust gas and the catalytic active components, and the coating on the surface of the substrate The catalyst coating must be dried and calcined, and the motorcycle tail gas catalytic converter provided by the invention has high activity, high stability and durability.

Description

technical field [0001] The invention relates to a catalytic converter for exhaust gas purification, more specifically to a motorcycle tail gas catalytic converter, and also relates to a manufacturing method of the motorcycle tail gas catalytic converter. Background technique [0002] CO, HC and NO x It is the main source of air pollution, which is extremely harmful to human health and the public environment. In order to eliminate this serious pollutant, countries around the world have successively formulated stricter emission standards. Motorcycle exhaust purification catalysts are being increasingly used as catalysts for environmental protection. Wide range of applications. The working principle of motorcycle exhaust catalytic converter is to carry out oxidation-reduction reaction on the surface of the catalyst to make harmful substances CO, HC and NO x Converted to non-toxic CO 2 、H 2 O and N 2 , thus reducing the harm to the environment. [0003] The precious metals...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/20F01N3/28B01J23/89B01J23/83B01J23/63
Inventor 杨刚黄燕赵赛赛
Owner 浙江欧信环保科技有限公司