FR2897609B1 - Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse - Google Patents

Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse

Info

Publication number
FR2897609B1
FR2897609B1 FR0601407A FR0601407A FR2897609B1 FR 2897609 B1 FR2897609 B1 FR 2897609B1 FR 0601407 A FR0601407 A FR 0601407A FR 0601407 A FR0601407 A FR 0601407A FR 2897609 B1 FR2897609 B1 FR 2897609B1
Authority
FR
France
Prior art keywords
lanthan
yttrium
cerium
catalysis
zirconium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR0601407A
Other languages
English (en)
Other versions
FR2897609A1 (fr
Inventor
Aimin Huang
Olivier Larcher
Emmanuel Rohart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rhodia Recherche et Technologies SAS
Original Assignee
Rhodia Recherche et Technologies SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR0601407A priority Critical patent/FR2897609B1/fr
Application filed by Rhodia Recherche et Technologies SAS filed Critical Rhodia Recherche et Technologies SAS
Priority to CA2642237A priority patent/CA2642237C/fr
Priority to RU2008137138/04A priority patent/RU2398629C2/ru
Priority to PL07704559T priority patent/PL1991354T3/pl
Priority to EP07704559.9A priority patent/EP1991354B1/fr
Priority to PCT/EP2007/051387 priority patent/WO2007093593A1/fr
Priority to KR1020087019994A priority patent/KR101030623B1/ko
Priority to KR1020117020245A priority patent/KR101142669B1/ko
Priority to DK07704559.9T priority patent/DK1991354T3/da
Priority to CN2007800055799A priority patent/CN101511479B/zh
Priority to JP2008554760A priority patent/JP5498023B2/ja
Priority to KR1020117004510A priority patent/KR101076945B1/ko
Priority to US12/279,382 priority patent/US7964527B2/en
Publication of FR2897609A1 publication Critical patent/FR2897609A1/fr
Application granted granted Critical
Publication of FR2897609B1 publication Critical patent/FR2897609B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/92Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/066Zirconium or hafnium; Oxides or hydroxides thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/10Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of rare earths
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/30Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00Catalysts, in general, characterised by their form or physical properties
    • B01J35/60Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61Surface area
    • B01J35/61310-100 m2/g
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/0009Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
    • B01J37/0018Addition 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)
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00Compounds of zirconium
    • C01G25/006Compounds containing, besides zirconium, two or more other elements, with the exception of oxygen or hydrogen
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/206Rare earth metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20715Zirconium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/54Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/56Platinum group metals
    • B01J23/63Platinum group metals with rare earths or actinides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02Impregnation, coating or precipitation
    • B01J37/03Precipitation; Co-precipitation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/06Washing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08Heat treatment
    • B01J37/10Heat treatment in the presence of water, e.g. steam
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00Crystal-structural characteristics
    • C01P2002/70Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/12Surface area
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/12Surface area
    • C01P2006/13Surface area thermal stability thereof at high temperatures
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)
FR0601407A 2006-02-17 2006-02-17 Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse Active FR2897609B1 (fr)

Priority Applications (13)

Application Number Priority Date Filing Date Title
FR0601407A FR2897609B1 (fr) 2006-02-17 2006-02-17 Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse
JP2008554760A JP5498023B2 (ja) 2006-02-17 2007-02-13 ジルコニウムの酸化物、セリウムの酸化物、イットリウムの酸化物、ランタンの酸化物および他の希土類の酸化物に基づく組成物、同組成物の調製方法ならびに触媒としての使用
PL07704559T PL1991354T3 (pl) 2006-02-17 2007-02-13 Kompozycja na bazie tlenków cyrkonu, ceru, itru, lantanu i innych metali ziem rzadkich, sposób otrzymywania i zastosowanie w katalizie
EP07704559.9A EP1991354B1 (fr) 2006-02-17 2007-02-13 Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse
PCT/EP2007/051387 WO2007093593A1 (fr) 2006-02-17 2007-02-13 Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse
KR1020087019994A KR101030623B1 (ko) 2006-02-17 2007-02-13 지르코늄, 세륨, 이트륨, 란타늄의 산화물 및 또 다른 희토류의 산화물을 기재로 하는 조성물, 그의 제조 방법 및촉매 용도
CA2642237A CA2642237C (fr) 2006-02-17 2007-02-13 Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse
DK07704559.9T DK1991354T3 (da) 2006-02-17 2007-02-13 Sammensætning på basis af zirconium-, cerium-, yttrium- og lanthanoxid og et yderligere sjældent jordartsmetals oxid, fremgangsmåde til fremstilling heraf og katalytisk anvendelse heraf
CN2007800055799A CN101511479B (zh) 2006-02-17 2007-02-13 基于锆、铈、钇、镧和另外稀土元素的氧化物的组合物、其制备方法和作为催化剂的用途
RU2008137138/04A RU2398629C2 (ru) 2006-02-17 2007-02-13 Композиция на основе оксидов циркония, церия, иттрия, лантана и другого редкоземельного элемента, способ получения и применение в катализе
KR1020117004510A KR101076945B1 (ko) 2006-02-17 2007-02-13 지르코늄, 세륨, 이트륨, 란타늄의 산화물 및 또 다른 희토류의 산화물을 기재로 하는 조성물, 그의 제조 방법 및 촉매 용도
US12/279,382 US7964527B2 (en) 2006-02-17 2007-02-13 Catalytic compositions comprising the oxides of zirconium, cerium, yttrium, lanthanum and other rare earths
KR1020117020245A KR101142669B1 (ko) 2006-02-17 2007-02-13 지르코늄, 세륨, 이트륨, 란타늄의 산화물 및 또 다른 희토류의 산화물을 기재로 하는 조성물, 그의 제조 방법 및 촉매 용도

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0601407A FR2897609B1 (fr) 2006-02-17 2006-02-17 Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse

Publications (2)

Publication Number Publication Date
FR2897609A1 FR2897609A1 (fr) 2007-08-24
FR2897609B1 true FR2897609B1 (fr) 2009-01-16

Family

ID=37009599

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0601407A Active FR2897609B1 (fr) 2006-02-17 2006-02-17 Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse

Country Status (2)

Country Link
CN (1) CN101511479B (fr)
FR (1) FR2897609B1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2898887B1 (fr) 2006-03-21 2008-05-02 Rhodia Recherches & Tech Composition a base d'oxyde de zirconium et d'oxyde de cerium a reductibilite elevee et a surface specifique stable procede de preparation et utilisation dans le traitement des gaz d'echappement
FR2976574B1 (fr) * 2011-06-17 2013-05-31 Rhodia Operations Composition a base d'oxydes de cerium, de zirconium et d'une autre terre rare a reductibilite elevee, procede de preparation et utilisation dans le domaine de la catalyse.
RU2608741C2 (ru) * 2011-07-14 2017-01-23 Трайбахер Индустри Аг Композиция оксида церия, диоксида циркония и оксида алюминия с повышенной термической стабильностью
DE102011107702A1 (de) 2011-07-14 2013-01-17 Sasol Germany Gmbh Verfahren zur Herstellung von Kompositen aus Aluminiumoxid und Cer-/Zirkonium-Mischoxiden
US10239045B2 (en) * 2013-12-23 2019-03-26 Rhodia Operations Inorganic composite oxides and methods of making the same
CN107073443B (zh) * 2014-09-05 2020-12-04 尼奥性能材料(新加坡)有限公司 高孔隙度的含铈和锆的氧化物
FR3050450A1 (fr) * 2016-04-26 2017-10-27 Rhodia Operations Oxyde mixte a base de cerium et de zirconium
CN109963648B (zh) * 2016-04-26 2022-11-01 罗地亚经营管理公司 基于铈和锆的混合氧化物
JP7114595B2 (ja) * 2016-12-23 2022-08-08 ローディア オペレーションズ セリウム、ジルコニウム、アルミニウム及びランタンから製造される自動車用触媒コンバーターのための耐老化性混合酸化物
US10322409B1 (en) * 2018-03-05 2019-06-18 King Fahd University Of Petroleum And Minerals Low temperature hydrothermal method for the preparation of LaCO3OH nanoparticles
WO2020061723A1 (fr) * 2018-09-24 2020-04-02 Rhodia Operations Oxyde mixte à réductibilité améliorée

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2736343B1 (fr) * 1995-07-03 1997-09-19 Rhone Poulenc Chimie Composition a base d'oxyde de zirconium et d'oxyde de cerium, procede de preparation et utilisation
US5958827A (en) * 1995-12-07 1999-09-28 Toyota Jidosha Kabushiki Kaisha Solid solution particle of oxides, a process for producing the same and a catalyst for purifying exhaust gases
JP4094689B2 (ja) * 1996-04-05 2008-06-04 阿南化成株式会社 酸素吸収放出能を有する複合酸化物の製造法
FR2793161B1 (fr) * 1999-05-07 2001-10-12 Renault Dispositif d'epuration des gaz d'echappement pour moteur a combustion interne
US6387338B1 (en) * 2000-03-15 2002-05-14 Delphi Technologies, Inc. Preparation of multi-component Ce, Zr, Mox high oxygen-ion-conduct/oxygen-storage-capacity materials
FR2852592B1 (fr) * 2003-03-18 2007-02-23 Rhodia Elect & Catalysis Compositions a base d'un oxyde de cerium, d'un oxyde de zirconium et, eventuellement d'un oxyde d'une autre terre rare, a surface specifique elevee a 1100 c, leur procede de preparation et leur utilisation comme catalyseur

Also Published As

Publication number Publication date
CN101511479B (zh) 2012-07-18
CN101511479A (zh) 2009-08-19
FR2897609A1 (fr) 2007-08-24

Similar Documents

Publication Publication Date Title
FR2897609B1 (fr) Composition a base d'oxydes de zirconium, de cerium, d'yttrium, de lanthane et d'une autre terre rare, procede de preparation et utilisation en catalyse
PL1991354T3 (pl) Kompozycja na bazie tlenków cyrkonu, ceru, itru, lantanu i innych metali ziem rzadkich, sposób otrzymywania i zastosowanie w katalizie
FR2930456B1 (fr) Composition a base d'oxydes de zirconium, de cerium et d'yttrium, a reductibilite elevee, procedes de preparation et utilisation en catalyse
FR2959735B1 (fr) Composition a base d'oxydes de zirconium, de cerium d'au moins une autre terre rare, a porosite specifique, procede de preparation et utilisation en catalyse.
FR2917646B1 (fr) Oxyde mixte a haute surface specifique de cerium et d'autre terre rare, procede de preparation et utilisation en catalyse
FR2841547B1 (fr) Composition a base d'oxyde de zirconium et d'oxydes de cerium, de lanthane et d'une autre terre rare, son procede de preparation et son utilisation comme catalyseur
PL2024084T3 (pl) Kompozycja na bazie tlenków cyrkonu, ceru, lantanu i itru, gadolinu lub samaru, o dużej powierzchni właściwej i zdolności do redukcji, i zastosowanie jako katalizator
FR2868768B1 (fr) Composition a base d'oxydes de zirconium et d'ytrium, procede de preparation et utilisation dans un systeme catalytique
FR2967993B1 (fr) Composition a base d'oxyde de zirconium et d'au moins un oxyde d'une terre rare autre que le cerium, a porosite specifique, ses procedes de preparation et son utilisation en catalyse
PL1603667T3 (pl) Kompozycja na bazie tlenku cyrkonu i tlenku ceru o zmniejszonej maksymalnej temperaturze redukcyjności, sposób jej wytwarzania i jej zastosowanie jako katalizatora
FR2955098B1 (fr) Composition a base d'oxydes de zirconium, de cerium et d'une autre terre rare a temperature maximale de reductibilite reduite, procede de preparation et utilisation dans le domaine de la catalyse.
FR2962431B1 (fr) Composition a base d'oxydes de cerium, de niobium et, eventuellement, de zirconium et son utilisation en catlyse.
DE602005017524D1 (de) Vorrichtungen zur Reparatur von Rissen im dreieckigen Faserknorpel-Komplex
PL1660406T4 (pl) Kompozycja na bazie tlenku ceru i tlenku cyrkonu o zwiększonej przewodności i powierzchni, sposób jej wytwarzania i zastosowanie jako katalizatora
NO20052447D0 (no) NOx-reduksjonssammensetninger for anvendelse i FCC-prosesser
FR2901155B1 (fr) Compositions utilisees notamment pour le piegeage d'oxydes d'azote (nox)
FR2852592B1 (fr) Compositions a base d'un oxyde de cerium, d'un oxyde de zirconium et, eventuellement d'un oxyde d'une autre terre rare, a surface specifique elevee a 1100 c, leur procede de preparation et leur utilisation comme catalyseur
PL2059339T3 (pl) Kompozycja o dużej zdolności do redukcji na bazie nanometrycznego tlenku ceru osadzonego na podłożu, sposób wytwarzania i zastosowania jako katalizator
GB0301599D0 (en) Cerium oxide nanoparticles as fuel additives
IL185330A0 (en) Method for controlling nox emissions in the fccu
PL2454196T3 (pl) Kompozycja wytwarzana na bazie tlenku ceru i tlenku cyrkonu o specyficznej porowatości, sposób wytwarzania i zastosowanie w katalizie
FR2976574B1 (fr) Composition a base d'oxydes de cerium, de zirconium et d'une autre terre rare a reductibilite elevee, procede de preparation et utilisation dans le domaine de la catalyse.
FR2900920B1 (fr) Composition a base d'oxides de zirconium, de cerium, de lanthane et d'yttrium, de gadolinium ou de samarium, a surface specifique stable, procede de preparation et utilisation comme catalyseur
ID30591A (id) Penggeser untuk pengikat geser dengan sarana pengunci
EP1973122A4 (fr) Supraconducteur en oxyde de forme conique contenant des terres rares

Legal Events

Date Code Title Description
TP Transmission of property
PLFP Fee payment

Year of fee payment: 11

PLFP Fee payment

Year of fee payment: 12

PLFP Fee payment

Year of fee payment: 13

PLFP Fee payment

Year of fee payment: 15

PLFP Fee payment

Year of fee payment: 16

PLFP Fee payment

Year of fee payment: 17

PLFP Fee payment

Year of fee payment: 18

CA Change of address

Effective date: 20230824

PLFP Fee payment

Year of fee payment: 19