Front multi-element catalyst and preparation method thereof

A catalyst and multi-component technology, applied in the field of pre-multi-component catalyst and its preparation, can solve the problems of secondary pollution, high fuel consumption, short life of three-way catalyst, etc.

Active Publication Date: 2011-07-27
兰嘉铭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problems of the existing three-way catalytic converters, such as short service

Method used

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  • Front multi-element catalyst and preparation method thereof
  • Front multi-element catalyst and preparation method thereof
  • Front multi-element catalyst and preparation method thereof

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Experimental program
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specific Embodiment approach 1

[0008] Specific embodiment one: In this embodiment, the front multi-component catalyst consists of 50% to 55% heavy calcium carbonate, 10% to 15% water glass, 5% aluminum oxide, 20% to 25% iron oxide, 0.1 %~0.15%Ce 2 o 3 and the rest of water, the shape is spherical, and the diameter is 8-10mm, wherein the iron oxide is iron oxide or ferric oxide.

[0009] The front multi-component catalyst described in this embodiment has a rough surface and a large specific surface, and is suitable for engines fueled by gasoline, diesel or gas. The pre-multiple catalyst of this embodiment has the advantages of long life, energy saving, emission reduction, no secondary pollution, and increased power. Small cars such as cars adopt the catalyst described in this embodiment, and the emission basically achieves low emission or close to zero emission, and the LPG gas consumption drops by about 10%. The CH and CO emissions of LGP buses are also greatly reduced, and CH emissions can be reduced by...

specific Embodiment approach 2

[0010] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the front multi-component catalyst consists of 52%~54% heavy calcium carbonate, 12%~14% water glass, 5% aluminum oxide, 22% ~24% Iron Oxide, 0.12%~0.14% Ce 2 o 3 and the remainder of water. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0011] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the front multi-component catalyst is composed of 53% heavy calcium carbonate, 13% water glass, 5% aluminum oxide, 23% iron oxide, 0.13% Ce 2 o 3 and 5.87% water. Others are the same as in the first embodiment.

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Abstract

The invention discloses a front multi-element catalyst and a preparation method thereof, and belongs to the field of automobile exhaust purification. The catalyst solves the technical problems of short life and high oil consumption of the conventional ternary catalyst. The front multi-element catalyst is prepared from heavy calcium carbonate, water glass, alumina, iron oxide, Ce2O3 and the balance of water, and is spherical. The catalyst is prepared by adopting a sintering method. The front multi-element catalyst has the advantages of long life (3 to 5 years), energy conservation, emission reduction, no secondary pollution and power increment; and the catalyst is mainly used for treating exhaust of vehicles. The method has simple process, is convenient for operation, and has mild reaction conditions.

Description

technical field [0001] The invention belongs to the field of automobile tail gas purification; in particular, it relates to a pre-multiple catalyst and a preparation method thereof. Background technique [0002] Automobile exhaust pollutes the atmosphere very seriously, and its treatment is a major issue facing human beings. The three-way catalytic converter is the most mature product and is widely used in the treatment of automobile exhaust. Because the catalyst is easily damaged by phosphorus and sulfur and becomes invalid, the service life is shortened and the fuel consumption is large (increased fuel consumption). Due to the short life of the three-way catalytic converter, the engine will wear out after working for a period of time, and the exhaust gas will inevitably exceed the standard. The treatment of this "burning" has become a social problem that needs to be solved urgently. Up to now, people have not found an ideal product to manage "cars in use". As far as Guan...

Claims

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Application Information

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IPC IPC(8): B01J27/232B01D53/94
Inventor 兰嘉铭
Owner 兰嘉铭
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