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Multi-phase functional ceramic honeycomb support and preparation method thereof

A technology of functional ceramics and supports, applied in the direction of ceramic products, chemical instruments and methods, catalyst carriers, etc., to achieve the effects of refined grains, wide firing temperature, and high mechanical strength

Active Publication Date: 2008-12-24
SHANDONG GEMSKY ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum titanate is one of the materials with the smallest coefficient of thermal expansion

Method used

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  • Multi-phase functional ceramic honeycomb support and preparation method thereof
  • Multi-phase functional ceramic honeycomb support and preparation method thereof
  • Multi-phase functional ceramic honeycomb support and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mix 2400 grams of titanium dioxide, 1000 grams of alumina, 400 grams of silicon dioxide, 120 grams of magnesium oxide, and 40 grams of rare earth cerium oxide (the particle size of the mixed dry material is completely passed through a 60-mesh standard sieve), add 817 grams of water, 163.4 grams of tung oil, 408.45 grams of carboxymethyl cellulose were kneaded, extruded, dried in a drying oven at 110°C for 12 hours, and then heated to 1250°C for 3 hours to obtain the product. The product picture is as follows figure 2 As shown, its microstructure is as image 3 shown.

Embodiment 2

[0023] After mixing 2200 grams of titanium dioxide, 1200 grams of alumina, 400 grams of silicon dioxide, 40 grams of magnesium oxide, and 40 grams of rare earth erbium oxide (the particle size of the mixed dry material completely passes through a 60-mesh standard sieve), add 817 grams of water and 163.4 grams of wax The emulsion and 408.45 grams of polyvinyl alcohol were mixed, extruded, dried in a drying oven at 110°C for 12 hours, and then heated to 1300°C for 2 hours to obtain the product.

Embodiment 3

[0025] Mix 2600 grams of titanium dioxide, 800 grams of alumina, 480 grams of silicon dioxide, 200 grams of magnesium oxide, 40 grams of rare earth cerium oxide, and 40 grams of rare earth erbium oxide (the particle size of the mixed dry material is completely passed through a 60-mesh standard sieve), and add 817 grams of Water, 163.4 grams of tung oil, and 408.45 grams of carboxypolyvinyl alcohol were mixed, extruded, dried in a drying oven at 120°C for 12 hours, and then heated to 1280°C for 3 hours to obtain the product.

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Abstract

The invention relates to a multi-phase functional honeycomb ceramic support body and a preparation method thereof. Using titanium dioxide, silica, and alumina as the main raw materials, through rare earth doping, adding an appropriate amount of burning accelerator magnesium oxide and additives, kneading and extrusion molding, drying, and calcining at 1200 to 1350°C for 2 to In 3 hours, a ceramic honeycomb carrier with aluminum titanate and rutile as the main crystal phases was generated. The honeycomb ceramic prepared by the invention has a thermal expansion coefficient of 3.6 to 7.5×10-6 / ℃ between 50 and 1000°C, is resistant to thermal shock, acid and alkali corrosion, has high strength, shows solid acidity, and is well combined with the carrier coating. This honeycomb ceramic can be used in a variety of applications, and is especially suitable for industrial flue gas integrated denitration catalyst supports, vehicle exhaust gas purification catalyst carriers, and photocatalyst carrier reactors.

Description

technical field [0001] The invention relates to a ceramic honeycomb support body and a preparation method thereof, in particular to an ATS multiphase functional honeycomb ceramic support body and a preparation method thereof. The support body is used for the support body of industrial flue gas integrated denitrification catalyst, the carrier of automobile exhaust gas purification catalyst and the carrier reactor of photocatalyst. The invention belongs to the field of preparation of special industrial ceramics or environmental protection technology. Background technique [0002] At present, most of the ceramic supports for industrial flue gas denitrification catalysts are made of cordierite. As described in the patent publication CN140141416A, the cost of cordierite supports is low, which is beneficial to reduce the operating cost of the denitrification process, and has high strength and small coefficient of thermal expansion. . However, it has poor compatibility with activ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/78C04B38/00C04B35/622B01J32/00
Inventor 祝社民沈岳松刘亚云
Owner SHANDONG GEMSKY ENVIRONMENTAL PROTECTION TECH CO LTD
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