Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing honeycomb ceramic catalyst

A technology of honeycomb ceramics and catalysts, which is applied in the field of preparation of honeycomb ceramic catalysts. It can solve the problems of complexity, large difference in hardness, easy cracking and peeling of coatings, etc., and achieves relaxation of processing conditions, improvement of dispersion performance, and avoidance of mechanical strength decline. Effect

Active Publication Date: 2013-01-16
CHINA PETROLEUM & CHEM CORP +1
View PDF15 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ball milling pulping process is relatively complicated, and the hardness of different components is quite different. The particle size distribution of the particles in the slurry after ball milling is relatively wide, and the particle size is relatively large, generally between 1 and 50um. The coating is easy to crack and peel off

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing honeycomb ceramic catalyst
  • Method for preparing honeycomb ceramic catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Pretreatment of the honeycomb ceramic substrate: at 40°C, put the honeycomb ceramic substrate into a nitric acid solution with a concentration of 10% by mass, ultrasonically treat the honeycomb ceramic substrate for 20 minutes, and dry it at 100°C for 12 hours after pretreatment. Ultrasonic radiation power is 0.1 W / ml pretreatment liquid.

[0038] Slurry preparation: 50 grams of γ-alumina with a particle size of 50 nm, 10 grams of cerium oxide with a particle size of 80 nm and 20 grams of silica sol with a particle size of 50 nm were added to 100 mL of distilled water stirred at high speed; after stirring evenly, 6 grams of triethylene The diamine continued to stir for 30 minutes; nitric acid was added to adjust the pH value of the slurry to 2, and the slurry was obtained by continuing to stir for 60 minutes.

[0039] Coating loading: immerse the pretreated cordierite honeycomb ceramic carrier in the slurry prepared above, take it out, blow off the residual liquid, dry ...

Embodiment 2

[0042] Pretreatment of the honeycomb ceramic substrate: at 80°C, put the honeycomb ceramic substrate into an oxalic acid solution with a concentration of 5% by mass, ultrasonically treat the honeycomb ceramic substrate for 30 minutes, and dry it at 120°C for 6 hours after pretreatment. Ultrasonic radiation power is 10 W / ml pretreatment liquid.

[0043] Slurry preparation: Add 30 grams of titanium oxide with a particle size of 20 nm, 5 grams of zirconia with a particle size of 50 nm and 15 grams of aluminum sol with a particle size of 80 nm into 100 mL of distilled water stirred at high speed; after stirring evenly, add 8 grams of isopropylamine and continue stirring for 30 minutes; add nitric acid to adjust the pH value of the slurry to 3.5, and continue stirring for 60 minutes to obtain the slurry.

[0044] Coating loading: immerse the pretreated cordierite honeycomb ceramic carrier in the slurry prepared above, take it out, blow off the residual liquid, dry at 40°C for 10 ho...

Embodiment 3

[0047] Honeycomb ceramic matrix pretreatment: at 20°C, put the honeycomb ceramic matrix into a hydrochloric acid solution with a concentration of 15% by mass, ultrasonically treat the honeycomb ceramic matrix for 100 minutes, and dry it at 110°C for 12 hours after pretreatment. Ultrasonic radiation power is 0.1 W / ml pretreatment liquid.

[0048] Slurry preparation: 24 grams of cerium oxide with a particle size of 100nm, 28 grams of lanthanum oxide with a particle size of 120nm and 20 grams of silica sol with a particle size of 80nm were added to 100mL of distilled water stirred at high speed; after stirring evenly, 8 grams of isopropylamine was added and continued to stir for 30 minutes; add nitric acid to adjust the pH value of the slurry to 3.5, and continue stirring for 60 minutes to obtain the slurry.

[0049] Coating loading: immerse the pretreated cordierite honeycomb ceramic carrier in the slurry prepared above, take it out, blow off the residual liquid, dry at 100°C fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Granularityaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a honeycomb ceramic catalyst. The method comprises the following steps of: performing ultrasonic pretreatment on a honeycomb ceramic matrix in pretreatment fluid, loading a nano serous fluid coating, and loading active ingredients. A catalyst coating obtained by the method is high in combination degree with the matrix and difficult to crack and strip, and a preparation process and equipment are simple, so that the catalyst has high usability and activity stability; and the catalyst can still keep high activity under the condition of the washing of high-airspeed air flow and thermal shock, so that the long-term stable running of the catalyst can be ensured.

Description

technical field [0001] The invention relates to a method for preparing a honeycomb ceramic catalyst, which can prepare required honeycomb ceramic catalysts for different reactions. Background technique [0002] Since the appearance of honeycomb ceramic carrier in the 1960s, it has been widely used in the purification of organic waste gas in industries such as automobile exhaust, petroleum, chemical industry, wire and cable, paint, coating, etc. It is an ideal carrier for environmental protection industry and chemical industry to purify waste gas. In recent years, with the continuous deepening of research on honeycomb ceramic catalysts, honeycomb ceramic supports have good application prospects in hydrogenation, Fischer-Tropsch synthesis, coal liquefaction, denitrification and other fields. [0003] Due to the small specific surface area of ​​the ceramic carrier, catalyst coatings are usually coated on its surface in practical applications. The coating generally accounts for ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/63B01J23/755B01J29/46B01J23/888B01J29/16B01J23/30B01J35/04B01J37/025B01J37/34B01D53/56B01D53/86
Inventor 王学海刘忠生陈玉香刘新友杨爱霞
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com