KR950000621A - 산소흡수 · 방출능을 가지는 복합산화물 및 그 제조방법 - Google Patents

산소흡수 · 방출능을 가지는 복합산화물 및 그 제조방법 Download PDF

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KR950000621A
KR950000621A KR1019940014012A KR19940014012A KR950000621A KR 950000621 A KR950000621 A KR 950000621A KR 1019940014012 A KR1019940014012 A KR 1019940014012A KR 19940014012 A KR19940014012 A KR 19940014012A KR 950000621 A KR950000621 A KR 950000621A
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South Korea
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oxide
oxygen absorption
composite
cerium
hafnium
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KR1019940014012A
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KR100194266B1 (ko
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다다토시 무로타
가즈히로 야마모토
시게루 아오자사
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이노우에 유스케
산도쿠 긴조쿠 고교 가부시키가이샤
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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
    • 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
    • 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
    • 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
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • 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
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • 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
    • B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Catalysts (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

(구성) 산화세륨, 산화지르코늄 및 산화하프늄을 함유하는 복합산화물로서, 이 복합산화물은 산화세륨 4.99∼98.99중량％와 산화지르코늄 1∼95중량％와 산화하프늄 0.01∼20중량％를 함유하며, 또한 400∼700℃에서, 100μ㏖/g 이상의 산소흡수ㆍ방출능을 가지며, 900℃, 5시간 가열후의 비표면적이 10㎡/g 이상을 나타내는 것을 특징으로 하는 산소흡수ㆍ방출능을 가지는 복합산화물 및 그 제조방법.
(효과) 본 발명의 복합산화물은 우수한 산소흡수ㆍ방출능을 가지며, 또한 900℃, 5시간 가열후의 비표면적 10㎡/g 이상이라고 하는 고온내구성을 나타내므로, 촉매분야 및 세라믹스 분야에 있어서 극히 유용하다. 또 본 발명의 제조방법에서는, 상기 복합산화물을 재현성 좋게 용이하게 제조할 수 있다.

Description

산소흡수ㆍ방출능을 가지는 복합산화물 및 그 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (3)

  1. 산화세륨, 산화지르코늄 및 산화하프늄을 함유하는 복합산화물로서, 이 복합산화물은, 산화세륨 4.99∼98.99중량％, 산화지르코늄 1∼95중량％ 및 산화하프늄 0.01∼20중량％을 함유하며, 또한 400∼700℃에서, 100μ㏖/g 이상의 산소흡수ㆍ방출능을 가지며, 900℃, 5시간 가열후의 비표면적인 10㎡/g 이상을 나타내는 것을 특징으로 하는 산소흡수ㆍ방출능을 가지는 복합산화물.
  2. 제 1 항에 있어서, 상기 복합산화물이 다시 산화티타늄, 산화텅스텐, 산화니켈, 산화구리, 산화철, 산화알루미늄, 산화규소, 산화베릴륨, 산화마그네슘, 산화칼슘, 산화스트론튬, 산화바륨, 산화라듐, 세륨이외의 희토류금속산화물 또는 이들의 혼합물을 함유하는 것을 특징으로 하는 산소흡수ㆍ방출능을 가지는 복합산화물.
  3. 제 1 항에 있어서, 세륨이온, 지르코늄이온 및 하프늄이온을 함유하는 용액과, 암모니아 수용액, 중탄산암모늄 수용액 또는 옥살산수용액을 혼합하여 세륨, 지르코늄 및 하프늄 함유 복합염 침전물을 조제한 후, 이 복합염 침전물을 300℃ 이상에서 소성하는 것을 특징으로 하는 산소흡수ㆍ방출능을 가지는 복합산화물의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019940014012A 1993-06-21 1994-06-21 배기가스 청정 촉매용 복합산화물 및 그 제조방법 KR100194266B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP93-149358 1993-06-21
JP5149358A JP3041662B2 (ja) 1993-06-21 1993-06-21 酸素吸収・放出能を有する複合酸化物、その製造法、及びその使用方法

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KR950000621A true KR950000621A (ko) 1995-01-03
KR100194266B1 KR100194266B1 (ko) 1999-06-15

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US (1) US5478543A (ko)
EP (1) EP0629438A3 (ko)
JP (1) JP3041662B2 (ko)
KR (1) KR100194266B1 (ko)

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KR20160082441A (ko) * 2014-12-30 2016-07-08 한국에너지기술연구원 중온 산소 선택성 흡착제 및 이의 제조방법

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Publication number Priority date Publication date Assignee Title
KR20160082441A (ko) * 2014-12-30 2016-07-08 한국에너지기술연구원 중온 산소 선택성 흡착제 및 이의 제조방법

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Publication number Publication date
KR100194266B1 (ko) 1999-06-15
EP0629438A3 (en) 1995-06-14
EP0629438A2 (en) 1994-12-21
JP3041662B2 (ja) 2000-05-15
US5478543A (en) 1995-12-26
JPH0716452A (ja) 1995-01-20

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