[특허]Process for preparing monoliths of aerogels of metal oxides

Process for preparing monoliths of aerogels of metal oxides 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C03B-019/06 C03B-037/016
출원번호	US-0772934 (1991-10-08)
우선권정보	IT-0019404 (1989-02-10)
발명자 / 주소	Cogliati Guido (Rome ITX) Bezzi Giovanni (Bagnacavallo ITX)
출원인 / 주소	Enichem S.p.A. (Milan ITX 03)
인용정보	피인용 횟수 : 37 인용 특허 : 0

초록 ▼

A process for the preparation of monoliths of aerogels of metal oxides, which aerogel is either constituted by one single oxide, or is constituted by a mixture of oxides, is disclosed, which process consists of the following operating steps: (a) the relevant metal alkoxide(s) is/are mixed with water in the presence of a catalyst of acidic character; (b) the so obtained mixture is hydrolysed; (c) a colloidal suspension of the oxide of a metal equal to, or different from, the metal(s) used in the (a) step is added to the hydrolysate; (d) the so obtained colloidal solution is caused to turn into a gel (gelation) having the desired shape and dimensions; (e) the gel is washed; (f) the gel is dried at values of temperature and pressure which are higher than the critical pressure and temperature values of the solvent used for the washing.

대표청구항 ▼

Process for preparing monoliths of an aerogel of at least one oxide, which process comprises the following operating steps: (a) mixing an alkoxide of at least one metal with water in the presence of an acidic catalyst to form a mixture; (b) hydrolyzing the mixture obtained in step (a) to form a hydrolysate; (c) adding an oxide of at least one metal as a fine powder having a high specific surface area to the hydrolysate of step (b) to form a colloidal solution; (d) causing the colloidal solution of step (c) to become a gel; (e) washing the gel; (f) drying the gel at values of temperature and pressure which are higher than the critical pressure and temperature values of the solvent used for the washing to form said monolith.

이 특허를 인용한 특허 (37)

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Worsley, Marcus A.; Kuntz, Joshua; Orme, Christine A., High surface area graphene-supported metal chalcogenide assembly.
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Masakara Alok ; Ramos Teresa ; Smith Douglas M., Limited-volume apparatus and method for forming thin film aerogels on semiconductor substrates.
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Douglas M. Smith ; Gregory P. Johnston ; William C. Ackerman ; Richard A. Stoltz ; Alok Maskara ; Teresa Ramos ; Shin-Puu Jeng ; Bruce E. Gnade, Low volatility solvent-based method for forming thin film nanoporous aerogels on semiconductor substrates.
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Smith Douglas M. ; Johnston Gregory P. ; Ackerman William C. ; Stoltz Richard A. ; Maskara Alok ; Ramos Teresa ; Jeng Shin-Puu ; Gnade Bruce E., Low volatility solvent-based method for forming thin film nanoporous aerogels on semiconductor substrates.
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Smith, Douglas M.; Johnston, Gregory P.; Ackerman, William C.; Stoltz, Richard A.; Maskara, Alok; Ramos, Teresa; Jeng, Shin-Puu; Gnade, Bruce E., Low volatility solvent-based method for forming thin film nanoporous aerogels on semiconductor substrates.
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Solinas, Stefano; Veronelli, Franco, Method and apparatus for forming a preform for a micro-structured optical fiber.
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Sander Matthew T., Method for internal molding and rapid drying of aerogel honeycomb catalyst monoliths.
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DeVera, Antonio L., Method for making high purity metal oxide particles and materials made thereof.
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Smith Douglas M. ; Johnston Gregory P. ; Ackerman William C. ; Jeng Shin-Puu, Nanoporous dielectric thin film formation using a post-deposition catalyst.
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Smith Douglas M. ; Ackerman William C. ; Stoltz Richard A., Polyol-based method for forming thin film aerogels on semiconductor substrates.
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Smith, Douglas M.; Ackerman, William C.; Stoltz, Richard A., Polyol-based method for forming thin film aerogels on semiconductor substrates.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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Process for preparing monoliths of aerogels of metal oxides 원문보기

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Process for preparing monoliths of aerogels of metal oxides 원문보기

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