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Thin-wall and high-specific-surface-area honeycomb porous ceramic and preparation method thereof

A technology of high specific surface area and porous ceramics, applied in the field of porous ceramics, can solve the problems of not being active, reducing the post-treatment system, and not increasing the specific surface area of ​​the catalytic reaction site, so as to improve performance and increase production efficiency.

Inactive Publication Date: 2018-10-26
安徽中鼎美达环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Domestically, the emission standards for automobiles have been tightened. Compared with the previous standard, the emission limits of nitrogen oxides have been tightened by 25%-28%, and the limits of particulate matter emissions by 82%. The original production level of the honeycomb ceramic carrier cannot increase the specific surface area of ​​the catalytic reaction site, and does not play a positive role in reducing the emission of the entire post-treatment system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of honeycomb porous ceramic with thin wall and high specific surface area. The raw materials include the following components: 35wt.% of high-purity flake talc powder, 1wt.% of hydrated alumina micropowder, 5wt.% of washed kaolin powder, 5wt.% of calcined kaolin powder, 99 grade α-alumina powder 20wt.%, quartz flake powder 10wt.%, cordierite raw powder 3wt.%, liquid surfactant 2wt.%, powder surfactant 0.5wt.%, plasticizer 2wt. %, internal lubricant 1.8wt.%, external lubricant 1.8wt.%, high-purity water 22wt.%.

[0018] A method for preparing thin-walled, high-specific-surface-area honeycomb porous ceramics, comprising the following steps:

[0019] (1) After dewatering cordierite raw powder, conduct ball milling treatment, pass through 180-mesh ultrasonic vibrating sieve as spare material;

[0020] (2), raw cordierite powder, high-purity flaky talc powder, hydrated alumina micropowder, washed kaolin powder, calcined kaolin powder, 99 grade α-alumina powder, quart...

Embodiment 2

[0027] A kind of honeycomb porous ceramic with thin wall and high specific surface area. The raw materials include the following components: 40wt.% of high-purity flake talc powder, 3wt.% of hydrated alumina micropowder, 8wt.% of washed kaolin powder, 8wt.% of calcined kaolin powder, 99 grade α-alumina powder 25wt.%, quartz flake powder 13wt.%, cordierite raw powder 7wt.%, liquid surfactant 2.5wt.%, powder surfactant 1wt.%, plasticizer 2.5wt .%, internal lubricant 2wt.%, external lubricant 2wt.%, high-purity water 25wt.%.

[0028] A method for preparing thin-walled, high-specific-surface-area honeycomb porous ceramics, comprising the following steps:

[0029] (1) After dewatering cordierite raw powder, conduct ball milling treatment, pass through 190-mesh ultrasonic vibrating sieve as spare material;

[0030] (2), raw cordierite powder, high-purity flaky talc powder, hydrated alumina micropowder, washed kaolin powder, calcined kaolin powder, 99 grade α-alumina powder, quartz ...

Embodiment 3

[0037] A kind of honeycomb porous ceramic with thin wall and high specific surface area. The raw materials include the following components: 45wt.% of high-purity flake talc powder, 5wt.% of hydrated alumina micropowder, 10wt.% of washed kaolin powder, 10wt.% of calcined kaolin powder, 99 grade α-alumina powder 30wt.%, quartz flake powder 15wt.%, cordierite raw powder 5wt.%, liquid surfactant 3wt.%, powder surfactant 2wt.%, plasticizer 3wt.% , 2.3wt.% internal lubricant, 2.3wt.% external lubricant, 28wt.% high-purity water.

[0038] A method for preparing thin-walled, high-specific-surface-area honeycomb porous ceramics, comprising the following steps:

[0039] (1) After dewatering cordierite raw powder, conduct ball milling treatment, and pass through 200-mesh ultrasonic vibrating screen as spare material;

[0040] (2), raw cordierite powder, high-purity flaky talc powder, hydrated alumina micropowder, washed kaolin powder, calcined kaolin powder, 99 grade α-alumina powder, qu...

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Abstract

The invention discloses thin-wall and high-specific-surface-area honeycomb porous ceramic and a preparation method thereof. The thin-wall and high-specific-surface-area honeycomb porous ceramic is prepared from, by weight, 35-45% of high-purity flaky talcum powder, 1-5% of hydrated alumina micro powder, 5-10% of washed kaolin powder, 5-10% of calcined kaolin powder, 20-30% of 99-grade alpha-alumina powder, 10-15% of quartz flaky micro powder, 3-5% of cordierite raw powder, 2-3% of liquid surfactant, 0.5-2% of powder surfactant, 2-3% of elasticizer, 1.8-2.3% of internal lubricant, 1.8-2.3% of external lubricant and 22-28% of high purity water. The honeycomb porous ceramic greatly increases the geometric surface area of a carrier and improves thermal shock resistance, and the honeycomb porous ceramic prepared through the preparation method can effectively improve the production efficiency and improve the product performance.

Description

technical field [0001] The invention relates to the technical field of porous ceramics, in particular to a thin-walled, high specific surface area honeycomb porous ceramic and a preparation method thereof. Background technique [0002] Domestically, the emission standards for automobiles have been tightened. Compared with the previous standard, the emission limits of nitrogen oxides have been tightened by 25%-28%, and the limits of particulate matter emissions by 82%. The original manufacturing level of the honeycomb ceramic carrier cannot increase the specific surface area of ​​the catalytic reaction site, and has no positive effect on the entire post-treatment system for reducing emissions. Therefore, we propose a thin-walled, high specific surface area honeycomb porous ceramic and its preparation method. Contents of the invention [0003] The main purpose of the present invention is to provide a thin-walled, high specific surface area honeycomb porous ceramic and its p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B35/20C04B35/622
CPCC04B35/20C04B35/622C04B38/0006C04B2235/3418C04B2235/349C04B2235/3481C04B2235/3217
Inventor 陈桂香吴广
Owner 安徽中鼎美达环保科技有限公司
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