Metal oxide nanoporous material, coating composition to obtain the same, and methods of manufacturing them
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0628493
(2005-06-09)
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등록번호 |
US7935653
(2011-04-19)
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우선권정보 |
JP-2004-004-173595(2004-06-11) |
국제출원번호 |
PCT/JP2005/011003
(2005-06-09)
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§371/§102 date |
20061205
(20061205)
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국제공개번호 |
WO05/121025
(2005-12-22)
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발명자
/ 주소 |
- Shimazu, Takashi
- Tsuji, Ryusuke
- Sobukawa, Hideo
- Seno, Yoshiki
- Hasegawa, Yoriko
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출원인 / 주소 |
- Kabushiki Kaisha Toyota Chuo Kenkyusho
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
4 인용 특허 :
0 |
초록
▼
A metal oxide nanoporous material comprises two or more kinds of first metal oxides selected from the group consisting of alumina, zirconia, titania, iron oxide, rare-earth oxides, alkali metal oxides and alkaline-earth metal oxides. The metal oxide nanoporous material has nanopores, each with a dia
A metal oxide nanoporous material comprises two or more kinds of first metal oxides selected from the group consisting of alumina, zirconia, titania, iron oxide, rare-earth oxides, alkali metal oxides and alkaline-earth metal oxides. The metal oxide nanoporous material has nanopores, each with a diameter of 10 nm or smaller, in which the metal oxides are dispersed homogeneously in the wall forming the nanopores.
대표청구항
▼
The invention claimed is: 1. A metal oxide nanoporous material which comprises two or more kinds of first metal oxides selected from the group consisting of alumina, zirconia, titania, iron oxide, rare-earth oxides, alkali metal oxides and alkaline-earth metal oxides, the metal oxide nanoporous mate
The invention claimed is: 1. A metal oxide nanoporous material which comprises two or more kinds of first metal oxides selected from the group consisting of alumina, zirconia, titania, iron oxide, rare-earth oxides, alkali metal oxides and alkaline-earth metal oxides, the metal oxide nanoporous material having nanopores, each with a diameter of 10 nm or smaller, and the metal oxides being dispersed homogeneously in a wall forming the nanopores,wherein, when a spectrum of a tested sample of the nanoporous material is measured at measurement points located in regions where the tested sample has an approximately equal thickness by energy dispersive X-ray spectroscopy using a transmission electron microscope with a 200 kV accelerating voltage and a 1.0 nm diameter of electron beam, andwhen a relative intensity ratio X, a mean value Xm and a second moment ν2 around the mean value Xm are calculated for every one of metal elements of the metal oxides contained in the nanoporous material in an amount not lower than 10 at %, the relative intensity ratio being calculated by converting an integrated intensity of the peaks of X-ray fluorescence for each metal element in measured spectra into a relative ratio,the calculated Xm and ν2 for every one of the metal elements of the metal oxides contained in the nanoporous material in not lower than 10 at %, will satisfy a condition expressed in the following formula (1):ν2/Xm2≦0.02 (1)wherein, in the formula (1), Xm is a mean value of the relative intensity ratios X, expressed as Xm=(ΣX)/N (N being a number of the measurement points); ν2 is the second moment around the mean value Xm,expressed as ν2={Σ(X−Xm)2}/N; and ν2/Xm2 is the second moment normalized by the mean value Xm squared.
이 특허를 인용한 특허 (4)
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Verdier, Stephan; Criniere, Guillaume; Ifrah, Simon; Jorge Coelho Marques, Rui, Catalyst compositions based on nanoparticles of a zirconium oxide, a titanium oxide or a mixed zirconium/titanium oxide deposited onto an alumina or aluminum oxyhydroxide support therefor.
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Shiratori, Kazuyuki; Nakamura, Masanori; Wakamatsu, Hironori; Suga, Katsuo, Exhaust gas purifying catalyst and method for producing the same.
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Lee, Hyokyung, Highly efficient catalyst using precious metal.
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Sato, Kimitoshi; Yamamura, Kae; Morikawa, Akira; Suda, Akihiko, Porous composite metal oxide, catalyst using the same, and methods for producing the porous composite metal oxide and the catalyst.
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