It is to provide a catalyst carrier having large pore size and porosity and a small pressure loss.The catalyst carrier is characterized by covering a surface of each particle in a silicon-containing ceramic carrier with alumina thin film, and is produced by immersing a carrier having an oxide film o
It is to provide a catalyst carrier having large pore size and porosity and a small pressure loss.The catalyst carrier is characterized by covering a surface of each particle in a silicon-containing ceramic carrier with alumina thin film, and is produced by immersing a carrier having an oxide film of a silicide in its surface in a solution of aluminum containing metal compound, drying by heating, calcining, subjecting to an immersion treatment in hot water and thereafter firing.
대표청구항▼
1. A catalyst carrier, wherein the carrier comprises particles of a silicon-containing ceramic material and each of these particles is covered by a film of alumina, wherein the film of alumina has a specific surface area of 50?300 m2/g and a microscopic view thereof indicates a bristled transplant s
1. A catalyst carrier, wherein the carrier comprises particles of a silicon-containing ceramic material and each of these particles is covered by a film of alumina, wherein the film of alumina has a specific surface area of 50?300 m2/g and a microscopic view thereof indicates a bristled transplant structure comprising fibers having a diameter of from 2 nm to 50 nm, a length of from 20 nm to 300 nm and a ratio of length/diameter of from 5 to 100.2. The catalyst carrier of claim 1, wherein the silicon-containing ceramic material comprises a non-oxide silicon ceramic.3. The catalyst carrier of claim 2, wherein the non-oxide silicon ceramic material comprises at least one of silicon carbide and silicon nitride.4. The catalyst carrier of claim 1, wherein the silicon-containing ceramic material comprises an oxide silicon ceramic.5. The catalyst carrier of claim 4, wherein the oxide silicon ceramic comprises at least one of sialon, mullite and cordierite.6. The catalyst carrier of claim 1, wherein the carrier comprises at least one of a porous body, a fiber-shaped body and a pellet-shaped body.7. The catalyst carrier of claim 1, wherein the carrier comprises a honeycomb-shaped porous sintered body of silicon carbide.8. The catalyst carrier of claim 1, wherein the silicon-containing ceramic material comprises a layer of SiO2 on a surface thereof.9. The catalyst carrier of claim 8, wherein the amount of SiO2 in the carrier is from 0.001% to 20% by weight.10. The catalyst carrier of claim 1, wherein the alumina film is present in the carrier in an amount of from 0.1% to 15% by weight, based on the carrier and expressed as alumina.11. A catalyst carrier, wherein the carrier comprises particles of a silicon-containing ceramic material and each of these particles is covered by a film of alumina, and wherein the silicon-containing ceramic material comprises a layer of SiO2 on a surface thereof, an amount of SiO2 in the carrier being from 0.001% to 20% by weight.12. The catalyst carrier of claim 11, wherein the silicon-containing ceramic material comprises a non-oxide silicon ceramic.13. The catalyst carrier of claim 12, wherein the non-oxide silicon ceramic material comprises at least one of silicon carbide and silicon nitride.14. The catalyst carrier of claim 11, wherein the silicon-containing ceramic material comprises an oxide silicon ceramic.15. The catalyst carrier of claim 14, wherein the oxide silicon ceramic comprises at least one of sialon, mullite and cordierite.16. The catalyst carrier of claim 11, wherein the carrier comprises at least one of a porous body, a fiber-shaped body and a pellet-shaped body.17. The catalyst carrier of claim 11, wherein the carrier comprises a honeycomb-shaped porous sintered body of silicon carbide.18. The catalyst carrier of claim 11, wherein the alumina film is present in the carrier in an amount of from 0.1% to 15% by weight, based on the carrier and expressed as alumina.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (9)
Bricker Maureen L. (Buffalo Grove IL) Lawson R. Joe (Palatine IL), Catalyst for treatment of exhaust gases from internal combustion engines.
Beauseigneur Patricia A. (Waverly NY) Lachman Irwin M. (Corning NY) Patil Mallanagouda D. (Corning NY), Method for improving the thermal shock resistance of a washcoated body.
Saijo,Takamitsu; Kasai,Kenichiro, Continuous firing furnace, manufacturing method of porous ceramic member using the same, porous ceramic member, and ceramic honeycomb filter.
Kishimoto, Atsushi; Tanaka, Masamichi; Ishizaki, Keita; Hanamura, Katsunori, Exhaust gas purification filter, and method of manufacturing exhaust gas purification filter.
Ohno,Kazushige; Sato,Hiroki, Honeycomb structure, porous body, pore forming material for the porous body, and methods for manufacturing the pore forming material, the porous body and the honeycomb structure.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.