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Preparation method of 3D printed mullite automobile exhaust purification catalyst carrier

A technology for purifying catalysts and 3D printing, applied in catalyst carriers, catalyst carriers, physical/chemical process catalysts, etc., can solve the problems of small specific surface area, poor thermal stability, low strength, etc., to improve specific surface area, good catalytic effect, The effect of strong thermal stability

Inactive Publication Date: 2020-11-03
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst carriers of the two have small specific surface area and poor purification effect; low strength, damage caused by sudden stops and bumps when the car is driving on different road conditions; poor thermal stability, and it is used in multiple cycles of alternating cold and heat in the exhaust pipe of the car short environmental lifetime

Method used

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  • Preparation method of 3D printed mullite automobile exhaust purification catalyst carrier
  • Preparation method of 3D printed mullite automobile exhaust purification catalyst carrier
  • Preparation method of 3D printed mullite automobile exhaust purification catalyst carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Put 150g of kaolin and 350g of alumina powder in a ball mill jar, use 500g of water as the ball milling medium, and mill for 8 hours to obtain an aluminum-silicon suspension; cut 100g of mullite fiber cotton into a sample with a length of 10mm, a width of 5mm, and a height of 5mm Then mix the sample with 500g of water and put it into the crusher to crush for 25s to obtain the mullite fiber suspension; pour the aluminum-silicon suspension and the mullite fiber suspension into the mixer to Stir at 200r / min for 10min to obtain a mixed slurry; put the mixed slurry into a suction filter funnel, turn on the vacuum pump and filter for 5h; put the filtered mixed slurry into a double-rotary blade mixer and knead for 2h , Aluminosilicate mud with mullite fibers must be added; use SolidWorks software to create a three-dimensional model of the catalyst carrier for automobile exhaust purification; use Simplify 3D software to slice the created three-dimensional model of the catalyst c...

Embodiment 2

[0027] Put 240g of kaolin and 360g of alumina powder in a ball mill jar, use 800g of water as the ball milling medium, and mill for 8 hours to obtain an aluminum-silicon suspension; cut 50g of mullite fiber cotton into a sample with a length of 10mm, a width of 5mm, and a height of 5mm Then mix the sample with 500g of water and put it into the crusher to crush for 20s to obtain the mullite fiber suspension; pour the aluminum-silicon suspension and the mullite fiber suspension into the mixer to Stir at 200r / min for 10min to obtain a mixed slurry; put the mixed slurry into a suction filter funnel, turn on the vacuum pump and filter for 5h; put the filtered mixed slurry into a double-rotary blade mixer and knead for 2h , Aluminosilicate mud with mullite fibers must be added; use SolidWorks software to create a 3D model of the catalyst carrier for automobile exhaust purification; use Simplify 3D software to slice the created 3D model of the catalyst carrier for automobile exhaust p...

Embodiment 3

[0030] Put 120g of kaolin and 270g of alumina powder in a ball mill jar, use 400g of water as the ball milling medium, and mill for 8 hours to obtain an aluminum-silicon suspension; cut 80g of mullite fiber cotton into a sample with a length of 10mm, a width of 5mm, and a height of 5mm Then mix the sample with 500g of water and put it into the crusher to crush for 20s to obtain the mullite fiber suspension; pour the aluminum-silicon suspension and the mullite fiber suspension into the mixer to Stir at 200r / min for 10min to obtain a mixed slurry; put the mixed slurry into a suction filter funnel, turn on the vacuum pump and filter for 5h; put the filtered mixed slurry into a double-rotary blade mixer and knead for 2h , Aluminosilicate mud with mullite fibers must be added; use SolidWorks software to create a three-dimensional model of the catalyst carrier for automobile exhaust purification; use Simplify 3D software to slice the created three-dimensional model of the catalyst ca...

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Abstract

The invention relates to the field of environmental protection, and belongs to the field of preparation of mullite automobile exhaust purification catalyst carriers. Kaolin, alumina powder and mullitecellucotton are used as raw materials, and the automobile exhaust purification catalyst carrier is obtained through ball milling, suction filtration, mixing, 3D modeling, 3D printing, drying and sintering operations. The 3D printing mullite automobile exhaust purification catalyst carrier product is controllable in surface area, good in catalytic effect, high in catalyst carrier strength, high instructural density and high in thermal stability, and satisfies the multi-period alternate cooling and heating use environment of an automobile exhaust pipe.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for preparing a 3D-printed mullite automobile exhaust purification catalyst carrier. Background technique [0002] Scientific analysis shows that automobile exhaust contains hundreds of different compounds, among which pollutants include solid suspended particles, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead, and sulfur oxides. The harmful exhaust gas emitted by a car in a year is three times larger than its own weight. The British Association for Clean Air and Environmental Protection once published a research report saying that compared with the victims of traffic accidents, the number of people who die from air pollution in the UK is 10 times more than that of the victims of traffic accidents every year. The harm of automobile exhaust to the human body, such as the lead compound in automobile exhaust, is a heavy metal substance. Once d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J35/02B01J35/06B01J35/10B01J21/16B33Y10/00B33Y70/00B33Y80/00F01N3/28B01J35/00
CPCB01J21/16B33Y10/00B33Y80/00B33Y70/00F01N3/2807F01N2330/18B01J35/40B01J35/58B01J35/615Y02A50/20
Inventor 罗旭东满奕然侯庆冬
Owner UNIV OF SCI & TECH LIAONING
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