Environmental control system including ozone-destroying catalytic converter having anodized and washcoat layers
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-050/00
B01J-023/40
출원번호
UP-0228949
(2005-09-16)
등록번호
US-7604779
(2009-11-10)
발명자
/ 주소
Liu, Di Jia
Winstead, Daniel R.
Michalakos, Peter M.
출원인 / 주소
Honeywell International Inc.
대리인 / 주소
Oral Caglar, Esq.
인용정보
피인용 횟수 :
3인용 특허 :
9
초록▼
An aircraft environmental control system includes a catalytic converter having ozone-destroying capability. A surface of the catalytic converter is anodized to form an anodized layer, and the metal oxide layer is washcoated to form a washcoat layer. An ozone destroying catalyst is impregnated in the
An aircraft environmental control system includes a catalytic converter having ozone-destroying capability. A surface of the catalytic converter is anodized to form an anodized layer, and the metal oxide layer is washcoated to form a washcoat layer. An ozone destroying catalyst is impregnated in the anodized and washcoat layers. The catalyst may include one or more metals. For example, a bimetallic catalyst may include a precious metal and a transition metal.
대표청구항▼
What is claimed is: 1. An ozone-destroying catalytic converter for an environmental control system of an aircraft, the converter comprising: a core, the core having an absence of an anodized layer; a washcoat layer on the core; an ozone-destroying catalyst impregnated in the washcoat layer; and whe
What is claimed is: 1. An ozone-destroying catalytic converter for an environmental control system of an aircraft, the converter comprising: a core, the core having an absence of an anodized layer; a washcoat layer on the core; an ozone-destroying catalyst impregnated in the washcoat layer; and wherein the washcoat layer comprises a metal oxide and an organosiloxane resin. 2. The ozone-destroying catalytic converter of claim 1 wherein the ozone-destroying catalyst is bimetallic. 3. The ozone-destroying catalytic converter of claim 1 wherein the ozone-destroying catalyst comprises at least one precious metal and at least one transition metal. 4. The ozone-destroying catalytic converter of claim 1 wherein the ozone-destroying catalyst comprises platinum and cobalt. 5. The ozone-destroying catalytic converter of claim 1 wherein the washcoat layer has a thickness of from about 5 microns to about 60 microns. 6. The ozone-destroying catalytic converter of claim 1 wherein the metal oxide is a refractory metal oxide chosen from alumina, silica, aluminum silicate, magnesia, manganese oxide, titania, zirconia, ceria, or boehmite. 7. The ozone-destroying catalytic converter of claim 1 wherein the organosiloxane resin is chosen from methylphenylsiloxane, methylsiloxane. 8. An ozone-destroying catalytic converter for an environmental control system of an aircraft, the converter comprising: a core, the core having an absence of an anodized layer; a washcoat layer on the core; and an ozone-destroying catalyst impregnated in the washcoat layer, the ozone-destroying catalyst comprising at least one precious metal and at least one transition metal; wherein the washcoat layer comprises a metal oxide and an organosiloxane resin; wherein the metal oxide is a refractory metal oxide chosen from alumina, silica, aluminum silicate, magnesia, manganese oxide, titania, zirconia, ceria, or boehmite; and wherein the organosiloxane resin is chosen from methylphenylsiloxane or methylsiloxane. 9. The ozone-destroying catalytic converter of claim 8 wherein the precious metal comprises platinum, palladium, rhodium, gold, iridium or silver and the transition metal comprises nickel, manganese, cobalt, iron or copper. 10. The ozone-destroying catalytic converter of claim 8 wherein the precious metal is platinum and the transition metal is cobalt. 11. The ozone-destroying catalytic converter of claim 8 wherein the washcoat layer has a surface area of from about 200 m2/gram to about 350 m2/gram. 12. The ozone-destroying catalytic converter of claim 8 wherein a pore volume of the washcoat layer is from about 0.2 cm3/gram to about 0.9 cm3/gram and the average pore size is from about 3 nm to about 25 nm. 13. The ozone-destroying catalytic converter of claim 8 wherein the core is a monolithic core including a plurality of offset fins providing a tortuous air flow path; the fins carrying the washcoat layer. 14. The ozone-destroying catalytic converter of claim 8 wherein the core comprises aluminum, an aluminum alloy, titanium, stainless steel, inconel, nickel alloy, silicon nitride, alpha aluminum oxide, cordierite, or other ceramic or composite materials. 15. An ozone-destroying catalytic converter for an environmental control system of an aircraft, the converter comprising: a core, the core having an absence of an anodized layer; a washcoat layer on the core, the washcoat comprising a partially hydrated refractory metal and an organosiloxane resin; and an ozone-destroying catalyst impregnated in the washcoat layer, the ozone-destroying catalyst comprising platinum and cobalt. 16. The ozone-destroying catalytic converter of claim 15 wherein the washcoat layer has a thickness of from about 5 microns to about 60 microns and a surface area of from about 200 m2/gram to about 350 m2/gram. 17. The ozone-destroying catalytic converter of claim 15 wherein the washcoat layer comprises alumina, silica, aluminum silicate, magnesia, manganese oxide, titania, zirconia or ceria. 18. The ozone-destroying catalytic converter of claim 15 wherein the core is a monolithic core including a plurality of offset fins providing a tortuous air flow path, the fins carrying the washcoat layer. 19. The ozone-destroying catalytic converter of claim 15 wherein the core comprises a material having a porous or oxidized surface.
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이 특허에 인용된 특허 (9)
Lester George Ronald ; Homeyer Stephen Thomas, Catalytic converter with metal monolith having an integral catalyst.
Liu, Di-Jia; Winstead, Daniel R.; Michalakos, Peter M., Environmental control system including ozone-destroying catalytic converter having anodized and washcoat layers.
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