[특허]Porous alumina fabrication procedures

[미국특허] Porous alumina fabrication procedures 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C01F-007/02
출원번호	US-0748019 (2000-12-27)
우선권정보	JP-0261350 (2000-08-30)
발명자 / 주소	Ohji, Tatsuki Deng, Zhen-Yan
출원인 / 주소	Japan as represented by Secretary of Agency of Industrial Science and Technology
대리인 / 주소	Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
인용정보	피인용 횟수 : 27 인용 특허 : 3

초록 ▼

This invention relates to a method of producing an alumina porous material using a mixed powder of alumina powder and aluminum hydroxide represented by the chemical formula Al(OH)3at different percentages as the starting material, comprising the steps of heating this mixed powder to decompose the aluminum hydroxide and further heat treating it within a temperature range of 1,000 to 1,600° C., and to the alumina porous material produced by the above-mentioned method with a porosity exceeding 40 volume % and its specific surface area of 8 to 40 m2/g, and further to a filter and catalyst carrier that are obtained using this alumina porous material.

대표청구항 ▼

1. A method of producing an alumina porous material, the method comprising molding a mixed powder comprising alumina powder and Al(OH)3as a starting powder to form a molded article; heating the molded article to decompose a portion of the Al(OH)3; and further calcinating the molded article at a temperature in a range of from 1,000 to 1,600° C. to produce the alumina porous material, wherein the powder contains alumina as the main component, aluminum hydroxide, and, optionally, 1 to 20 volume % of zirconia. 2. The method according to claim 1, wherein the alumina powder in the mixed powder has a mean particle diameter in a range of from 0.05 to 2 μm. 3. The method according to claim 1, wherein the mixed powder comprises 10 to 90 volume % Al(OH)3. 4. The method according to claim 3, wherein the Al(OH)3is a powder having a mean particle diameter of 2.0 μm or smaller. 5. The method according to claim 1, wherein the mixed powder further comprises 0 to 10 volume % zirconia powder. 6. The method according to claim 1, wherein the heating comprises heating the molded article to a temperature in a range of from 800 to 1,000° C. at a rate in a range of from 1 to 10° C./min. 7. The method according to claim 1, wherein the heating is in air.

이 특허에 인용된 특허 (3) 인용/피인용 타임라인 분석

Pinnavaia Thomas J. ; Zhang Wenzhong, Porous aluminum oxide materials prepared by non-ionic surfactant assembly route.
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Yamada Koichi (Niihama JPX) Nakazato Kunio (Yokohama JPX) Shiraishi Katsuzo (Niihama JPX) Hamano Seiichi (Niihama JPX), Process for the production of low density activated alumina formed product.
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Sanchez Moises G. (Severna Park MD) Ernest Michael V. (Baltimore MD) Laine Norman R. (Rockville MD), Spheroidal alumina particles and catalysts employing the particles as a support.
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이 특허를 인용한 특허 (27) 인용/피인용 타임라인 분석

Owens, Tracie L.; Leta, Daniel P., Adsorbent-incorporated polymer fibers in packed bed and fabric contactors, and methods and devices using same.
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Fowler, Tracy A.; Huntington, Richard A.; Fulton, John W., Apparatus and system for swing adsorption processes related thereto.
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Fowler, Tracy A.; Ramkumar, Shwetha; Frederick, Jeffrey W.; Nagavarapu, Ananda K.; Chialvo, Sebastian; Tammera, Robert F.; Fulton, John W., Apparatus and system for swing adsorption processes related thereto.
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Johnson, Robert A.; Deckman, Harry W.; Kelley, Bruce T.; Oelfke, Russell H.; Ramkumar, Shwetha, Apparatus and system for swing adsorption processes related thereto.
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McMahon, Patrick D. J.; Johnson, Robert A.; Ramkumar, Shwetha; Oelfke, Russell H.; Thomas, Eugene R.; Nagavarapu, Ananda K.; Barnes, William, Apparatus and system for swing adsorption processes related thereto.
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Nagavarapu, Ananda K.; Marshall, Bennett D., Apparatus and system for swing adsorption processes related thereto.
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Nagavarapu, Ananda K.; Smith, Ransdall K.; Oelfke, Russell H., Apparatus and system for swing adsorption processes related thereto.
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Tammera, Robert F., Apparatus and system for swing adsorption processes related thereto.
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Tammera, Robert F.; Frederick, Jeffrey W., Apparatus and system for swing adsorption processes related thereto.
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Ramkumar, Shwetha; Johnson, Robert A.; Mon, Eduardo; Fulton, John W., Apparatus and system having a valve assembly and swing adsorption processes related thereto.
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Tammera, Robert F., Apparatus and systems having a reciprocating valve head assembly and swing adsorption processes related thereto.
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Tammera, Robert F., Apparatus and systems having a reciprocating valve head assembly and swing adsorption processes related thereto.
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Sundaram, Narasimhan; Huntington, Richard A., Apparatus and systems having a rotary valve assembly and swing adsorption processes related thereto.
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Tammera, Robert F.; Anderson, Thomas N., Apparatus and systems having a rotary valve assembly and swing adsorption processes related thereto.
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Wanni, Amar S.; Nadarajah, Chithranjan; Frederick, Jeffrey W.; Sundaram, Narasimhan, Apparatus and systems having an adsorbent contactor and swing adsorption processes related thereto.
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Tammera, Robert F.; Basile, Richard J.; Frederick, Jeffrey W., Apparatus and systems having an encased adsorbent contactor and swing adsorption processes related thereto.
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Tammera, Robert F.; Basile, Richard J.; Frederick, Jeffrey W., Apparatus and systems having an encased adsorbent contactor and swing adsorption processes related thereto.
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Sundaram, Narasimhan, Apparatus and systems having compact configuration multiple swing adsorption beds and methods related thereto.
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Frederick, Jeffrey W.; Fulton, Jr., John W.; Tammera, Robert F.; Huntington, Richard A., Integrated adsorber head and valve design and swing adsorption methods related thereto.
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Sundaram, Narasimhan; Northrop, P. Scott, Kinetic fractionators, and cycling processes for fractionation of gas mixtures.
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Deckman, Harry W.; Kamakoti, Preeti; Ravikovitch, Peter I.; Kelley, Bruce T.; Northrop, P. Scott; Rasmussen, Peter C.; Tanaka, Paul L.; Webster, Martin N.; Roth, Wieslaw J.; Corcoran, Jr., Edward W., Method and apparatus for removal of oil from utility gas stream.
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Deckman, Harry W.; Kamakoti, Preeti; Ravikovitch, Peter I.; Kelley, Bruce T.; Northrop, Paul Scott; Rasmussen, Peter C.; Tanaka, Paul Lawrence; Webster, Martin N.; Roth, Wieslaw Jerzy; Corcoran, Edward W., Method and apparatus for removal of oil from utility gas stream.
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Quadir, Tariq, Method for fabricating an alumina body having nano-sized open-cell pores that are stable at high temperatures.
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Rasmussen, Peter C.; Tanaka, Paul L.; Kelley, Bruce T.; Uptigrove, Stanley O.; Deckman, Harry W., Methods of generating and utilizing utility gas.
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Deckman, Harry W.; Johnson, Robert A.; Tammera, Robert F.; Anderson, Thomas N., Methods of removing contaminants from a hydrocarbon stream by swing adsorption and related apparatus and systems.
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Deckman, Harry W.; Johnson, Robert A.; Kelley, Bruce T.; Ravikovitch, Peter I.; Anderson, Thomas N., Methods of removing contaminants from hydrocarbon stream by swing adsorption and related apparatus and systems.
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Brody, John F.; Leta, Daniel P.; Fowler, Tracy Alan; Freeman, Stephanie A.; Cutler, Joshua I., Structured adsorbent beds, methods of producing the same and uses thereof.
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[미국특허] Porous alumina fabrication procedures 원문보기