KR20070028975A - 내열성이 우수한 금속산화물 및 이의 제조방법 - Google Patents
내열성이 우수한 금속산화물 및 이의 제조방법 Download PDFInfo
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- KR20070028975A KR20070028975A KR1020050083800A KR20050083800A KR20070028975A KR 20070028975 A KR20070028975 A KR 20070028975A KR 1020050083800 A KR1020050083800 A KR 1020050083800A KR 20050083800 A KR20050083800 A KR 20050083800A KR 20070028975 A KR20070028975 A KR 20070028975A
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- C01G25/00—Compounds of zirconium
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/10—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/03—Precipitation; Co-precipitation
- B01J37/031—Precipitation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/14—Methods for preparing oxides or hydroxides in general
- C01B13/36—Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions
- C01B13/363—Mixtures of oxides or hydroxides by precipitation
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- C01B13/14—Methods for preparing oxides or hydroxides in general
- C01B13/36—Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions
- C01B13/366—Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions by hydrothermal processing
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- C—CHEMISTRY; METALLURGY
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- C01F7/00—Compounds of aluminium
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- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
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- C01P2004/32—Spheres
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
- C01P2006/13—Surface area thermal stability thereof at high temperatures
Abstract
Description
실시예 1 | 비교예 1 | 실시예 2 | 비교예 2 | 실시예 3 | 비교예 3 | ||||
A | B | A | B | A | B | ||||
건조시료 | 150 | 120 | 95 | 106 | 125 | 73 | 120 | 130 | 67 |
725℃ | 95 | 70 | 70 | 95 | 80 | 65 | 95 | 75 | 62 |
1000℃ | 48 | 22 | 40 | 65 | 44 | 54 | 67 | 25 | 53 |
1100℃ | 30 | 8 | 15 | 45 | 20 | 32 | 50 | 7 | 31 |
Claims (10)
- (ⅰ)물, (ⅱ)수용성 세륨 화합물을 포함하는 제1의 금속염 및 (ⅲ)수용성 알루미늄 화합물을 포함하는 제2의 금속염을 포함하는 반응 혼합물을 200 내지 700℃ 의 온도 및 180 내지 550bar의 압력 하에서 연속적으로 반응시키며, 반응생성물은 알루미늄을 제외한 금속과 알루미늄의 몰비가 0.1 내지 10인 것을 특징으로 하는 금속산화물의 제조 방법.
- 제1항에 있어서, 상기 제1의 금속염은 Ce을 제외한 란탄족 금속, Ca, Sc, Sr, Zr, Y 중에서 선택된 적어도 1종 이상 금속의 염을 더욱 포함하는 것을 특징으로 하는 금속산화물의 제조 방법.
- 제1항에 있어서, 상기 제1의 금속염은 지르코늄염을 더욱 포함하는 것을 특징으로 하는 금속산화물의 제조 방법.
- 제 1항에 있어서, 상기 제2의 금속염은 알칼리토금속, 란탄족 금속 및 바륨 중에서 선택된 적어도 1종 이상의 금속의 염을 더욱 포함하는 것을 특징으로 하는 금속산화물의 제조 방법.
- 제1항에 있어서, 상기 반응 혼합물은 반응 전 또는 반응 중에 상기 금속염 1 몰 대비 0.1 내지 20몰 비의 알칼리 또는 산성 용액이 더욱 첨가되는 것을 특징으로 하는 금속 산화물의 제조방법.
- 제5항에 있어서, 상기 알칼리 용액은 암모니아수인 것을 특징으로 하는 금속 산화물의 제조방법.
- 제1항에 있어서, 상기 연속반응은 예비 가압된 세륨을 포함하는 금속염 수용액과 예비 가압된 암모니아수 등의 침전제 수용액을 먼저 혼합, 침전시키고, 이 혼합침전물(p1)과 예비 가압된 알루미늄염의 수용액을 다시 혼합 침전시킨 후, 이 혼합침전물(p2)과 초임계수 또는 아임계수를 혼합, 반응시켜 수행되는 것을 특징으로 하는 금속산화물의 제조방법.
- 제1항에 있어서, 상기 방법은 반응생성물의 분리, 건조 및 하소 중 적어도 하나의 후처리과정을 더욱 포함하는 것을 특징으로 하는 금속 산화물의 제조방법.
- 제1항 내지 제8항 중 어느 하나의 방법에 의해 제조되며, 하소전 비표면적이 최소 100㎡/g이고, 1000℃에서 6시간 동안 공기 중에서 하소시 비표면적이 최소 40㎡/g으로 유지되는 것을 특징으로 하는 금속산화물.
- 제9항에 따른 금속산화물을 사용하여 내연기관으로부터 배기가스를 처리하는 것을 특징으로 촉매시스템.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020050083800A KR100713298B1 (ko) | 2005-09-08 | 2005-09-08 | 내열성이 우수한 금속산화물 및 이의 제조방법 |
JP2008529910A JP2009507750A (ja) | 2005-09-08 | 2006-08-28 | 耐熱性に優れた金属酸化物およびその製造方法 |
PCT/KR2006/003373 WO2007029932A1 (en) | 2005-09-08 | 2006-08-28 | Metal oxide with high thermal stability and preparing method thereof |
CNA200680032801XA CN101263087A (zh) | 2005-09-08 | 2006-08-28 | 具有高热稳定性的金属氧化物混合物及其制备方法 |
EP06798545A EP1928787A4 (en) | 2005-09-08 | 2006-08-28 | METAL OXIDE WITH HIGH THERMAL STABILITY AND MANUFACTURING METHOD THEREFOR |
US12/065,917 US20080242536A1 (en) | 2005-09-08 | 2006-08-28 | Metal Oxide with High Thermal Stability and Preparing Method Thereof |
Applications Claiming Priority (1)
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KR1020050083800A KR100713298B1 (ko) | 2005-09-08 | 2005-09-08 | 내열성이 우수한 금속산화물 및 이의 제조방법 |
Publications (2)
Publication Number | Publication Date |
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KR20070028975A true KR20070028975A (ko) | 2007-03-13 |
KR100713298B1 KR100713298B1 (ko) | 2007-05-04 |
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KR1020050083800A KR100713298B1 (ko) | 2005-09-08 | 2005-09-08 | 내열성이 우수한 금속산화물 및 이의 제조방법 |
Country Status (6)
Country | Link |
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US (1) | US20080242536A1 (ko) |
EP (1) | EP1928787A4 (ko) |
JP (1) | JP2009507750A (ko) |
KR (1) | KR100713298B1 (ko) |
CN (1) | CN101263087A (ko) |
WO (1) | WO2007029932A1 (ko) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100867601B1 (ko) | 2007-08-28 | 2008-11-10 | 한국과학기술원 | 초임계수를 이용한 반도체 산화물의 제조방법 |
KR101100297B1 (ko) | 2009-01-09 | 2011-12-28 | 한국과학기술연구원 | 금속 화합물 미세 분말의 제조방법 |
EP2802535A1 (en) * | 2011-10-27 | 2014-11-19 | Tct S.R.L. | Plant and method for nanoparticle generation |
CN102897823B (zh) * | 2012-07-26 | 2014-01-15 | 北京科技大学 | 一种超临界水体系氧化制备纳米CeO2粉末装置及工艺 |
EP3092067A1 (en) * | 2014-01-08 | 2016-11-16 | Teknologisk Institut | Method of preparing a catalyst structure |
EP3045226A1 (de) * | 2015-01-19 | 2016-07-20 | Umicore AG & Co. KG | Doppelschichtiger Dreiweg-Katalysator mit verbesserter Alterungsstabilität |
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JPS62275025A (ja) | 1986-02-12 | 1987-11-30 | Sumitomo Chem Co Ltd | 複合酸化物の製造方法 |
US4714694A (en) * | 1986-06-30 | 1987-12-22 | Engelhard Corporation | Aluminum-stabilized ceria catalyst compositions, and methods of making the same |
JPH01210032A (ja) * | 1988-02-18 | 1989-08-23 | Nippon Engeruharudo Kk | 排気ガス浄化用触媒及びその製造方法 |
US5032555A (en) * | 1988-05-16 | 1991-07-16 | Allied-Signal Inc. | Process for making zirconia-alumina |
JP3047110B2 (ja) | 1990-06-15 | 2000-05-29 | 株式会社東北テクノアーチ | 金属酸化物微粒子の製造方法 |
ATE190241T1 (de) * | 1991-11-26 | 2000-03-15 | Engelhard Corp | Ceroxid-aluminiumoxid enthaltender oxidationskatalysator und verfahren zur anwendung. |
JPH06114264A (ja) * | 1992-10-05 | 1994-04-26 | Nissan Motor Co Ltd | 排ガス浄化用触媒の製造方法 |
JP4053623B2 (ja) * | 1996-12-27 | 2008-02-27 | 阿南化成株式会社 | ジルコニウム−セリウム系複合酸化物及びその製造方法 |
JP3831093B2 (ja) * | 1997-10-22 | 2006-10-11 | 三井金属鉱業株式会社 | 複合酸化物、その製造方法及びそれを用いた排ガス浄化用触媒 |
JPH11226405A (ja) * | 1998-02-12 | 1999-08-24 | Nissan Motor Co Ltd | 排気ガス浄化用触媒及びその製造方法 |
TR200100553T2 (tr) * | 1998-08-19 | 2001-07-23 | The Dow Chemical Company | Nano-boyutlu metal oksit tozlarının hazırlanması için işlem |
JP3858625B2 (ja) | 2000-07-27 | 2006-12-20 | 株式会社豊田中央研究所 | 複合酸化物とその製造方法及び排ガス浄化用触媒とその製造方法 |
JP4006976B2 (ja) * | 2000-11-15 | 2007-11-14 | 株式会社豊田中央研究所 | 複合酸化物粉末とその製造方法及び触媒 |
JP2002248333A (ja) * | 2001-02-22 | 2002-09-03 | Mitsubishi Materials Corp | 金属または金属化合物微粒子の製造装置およびその方法 |
WO2003014251A1 (en) * | 2001-08-09 | 2003-02-20 | Hitachi Maxell, Ltd. | Non-magnetic particles having a plate shape and method for production thereof, abrasive material, polishing article and abrasive fluid comprising such particles |
JP4352300B2 (ja) * | 2001-08-30 | 2009-10-28 | 株式会社豊田中央研究所 | 複合酸化物とその製造方法及び排ガス浄化用助触媒 |
KR100460102B1 (ko) * | 2002-07-15 | 2004-12-03 | 한화석유화학 주식회사 | 금속산화물 초미립자의 제조방법 |
US20040186016A1 (en) * | 2003-03-17 | 2004-09-23 | Omg Ag & Co. Kg | Oxygen storage material, process for its preparation and its application in a catalyst |
KR20040100136A (ko) * | 2003-05-21 | 2004-12-02 | 한화석유화학 주식회사 | 금속 산화물의 도핑 방법 |
FR2901155B1 (fr) * | 2006-05-16 | 2008-10-10 | Rhodia Recherches & Tech | Compositions utilisees notamment pour le piegeage d'oxydes d'azote (nox) |
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2005
- 2005-09-08 KR KR1020050083800A patent/KR100713298B1/ko active IP Right Grant
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2006
- 2006-08-28 JP JP2008529910A patent/JP2009507750A/ja active Pending
- 2006-08-28 EP EP06798545A patent/EP1928787A4/en not_active Ceased
- 2006-08-28 CN CNA200680032801XA patent/CN101263087A/zh active Pending
- 2006-08-28 WO PCT/KR2006/003373 patent/WO2007029932A1/en active Application Filing
- 2006-08-28 US US12/065,917 patent/US20080242536A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP1928787A1 (en) | 2008-06-11 |
CN101263087A (zh) | 2008-09-10 |
EP1928787A4 (en) | 2008-11-26 |
WO2007029932A1 (en) | 2007-03-15 |
JP2009507750A (ja) | 2009-02-26 |
KR100713298B1 (ko) | 2007-05-04 |
US20080242536A1 (en) | 2008-10-02 |
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