Automobile exhaust gas treatment catalyst and preparation method thereof

A technology of automobile exhaust and catalyst, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, gas treatment, etc. It can solve the problems of difficulty in purifying automobile exhaust, insufficient heat resistance and low-temperature activity, and affecting the catalytic activity of catalysts, etc. , to achieve uniform distribution of active ingredients, maintain activity, and improve high temperature resistance

Inactive Publication Date: 2019-01-11
安徽菲扬新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alumina of the catalyst has not been treated, the specific surface area is insufficient, and it is difficult to load the load evenly, thereby affecting the catalytic activity of the catalyst, and the heat resistance and low-temperature activity are insufficient, and it is difficult to achieve a better effect of purifying automobile exhaust.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The automobile exhaust treatment catalyst of this embodiment includes a carrier, and the carrier is sequentially coated with a first catalyst coating, a second catalyst coating and a third catalyst coating;

[0035] Wherein, the first catalyst coating is a lanthanum-modified oxygen storage material coating, which is composed of lanthanum loaded on the oxygen storage material, wherein the weight percent load of lanthanum is 7%, and the composition of the oxygen storage material is For: 20wt% ZrO 2 , 70%wt% CeO 2 , 5wt% Y 2 o 3 and 5% PrO 2 ;

[0036] Wherein, the second catalyst coating is a barium-modified alumina-loaded active component coating, and the barium-modified γ-Al 2 o 3 Loaded active ingredient composition, wherein the weight percentage of barium is 5%, the weight percentage of the active ingredient is 10%, and the active ingredient is: one or more of Co, Mo, Sr, Zr, Ti, Cu mixture;

[0037] Wherein, the third catalyst coating is a coating material co...

Embodiment 2

[0055] The automobile exhaust treatment catalyst of this embodiment includes a carrier, and the carrier is sequentially coated with a first catalyst coating, a second catalyst coating and a third catalyst coating;

[0056] Wherein, the first catalyst coating is a lanthanum-modified oxygen storage material coating, which is composed of lanthanum loaded on the oxygen storage material, wherein the weight percent load of lanthanum is 7%, and the composition of the oxygen storage material is For: 20wt% ZrO 2 , 70%wt% CeO 2 , 5wt% Y 2 o 3 and 5% PrO 2 ;

[0057] Wherein, the second catalyst coating is a barium-modified alumina-loaded active component coating, and the barium-modified γ-Al 2 o 3 Loaded active ingredient composition, wherein the weight percentage of barium is 5%, the weight percentage of the active ingredient is 10%, and the active ingredient is: one or more of Co, Mo, Sr, Zr, Ti, Cu mixture;

[0058] Wherein, the third catalyst coating is a coating material co...

Embodiment 3

[0076] The automobile exhaust treatment catalyst of this embodiment includes a carrier, and the carrier is sequentially coated with a first catalyst coating, a second catalyst coating and a third catalyst coating;

[0077] Wherein, the first catalyst coating is a lanthanum-modified oxygen storage material coating, which is composed of lanthanum loaded on the oxygen storage material, wherein the weight percent load of lanthanum is 7%, and the composition of the oxygen storage material is For: 20wt% ZrO 2 , 70%wt% CeO 2 , 5wt% Y 2 o 3 and 5% PrO 2 ;

[0078] Wherein, the second catalyst coating is a barium-modified alumina-loaded active component coating, and the barium-modified γ-Al 2 o 3 Loaded active ingredient composition, wherein the weight percentage of barium is 5%, the weight percentage of the active ingredient is 10%, and the active ingredient is: one or more of Co, Mo, Sr, Zr, Ti, Cu mixture;

[0079] Wherein, the third catalyst coating is a coating material co...

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Abstract

The invention relates to the technical field of automobile exhaust gas purification, and concretely relates to an automobile exhaust gas treatment catalyst and a preparation method thereof. The catalyst comprises a carrier, and the carrier is sequentially coated with a first catalyst coating, a second catalyst coating and a third catalyst coating; the first catalyst coating is a lanthanum-modifiedoxygen storage material coating, and is formed by loading lanthanum on an oxygen storage material; the second catalyst coating is a barium-modified alumina supported active component coating, and iscomposed of a barium-modified gamma-Al2O3 supported active component; and the third catalyst coating is a coating material of meso-porous AcF micro-powder supported with and wrapping a precious metal.The catalyst has the advantages of high catalytic activity, great reduction of nitrogen oxides, carbon monoxide, hydrocarbon carbon and other series of pollutants in discharged automobile exhaust gas, good heat resistance, good stability, and improvement of the utilization rate of the precious metal.

Description

technical field [0001] The invention relates to the technical field of automobile tail gas purification, in particular to an automobile tail gas treatment catalyst and a preparation method thereof. Background technique [0002] The environmental pollution caused by automobile exhaust and the health hazards of urban residents are very serious. The treatment or control of automobile exhaust emissions has become a major issue in the field of environmental protection around the world. The main components of automobile exhaust are carbon monoxide, hydrocarbons, and nitrogen oxides. , carbon particles PM2.5 and a small amount of lead compounds and sulfides, etc. Generally speaking, there are two methods to realize the purification of automobile exhaust gas: internal control of the engine and external purification of the engine. The internal control is to use the working process of the engine itself to reduce vehicle emission pollution In terms of carburetors and engines, automobil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J23/63B01J23/02B01J23/28B01J23/78B01J37/02B01J37/08B01D53/94
CPCB01D53/945B01D2258/01B01J23/02B01J23/10B01J23/28B01J23/63B01J23/78B01J37/0201B01J37/0215B01J37/0228B01J37/082
Inventor 岳朝雷
Owner 安徽菲扬新材料有限公司
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