ES2182544T3 - Oxidacion catalitica parcial por medio de dos metales de actividad catalitica. - Google Patents

Oxidacion catalitica parcial por medio de dos metales de actividad catalitica.

Info

Publication number
ES2182544T3
ES2182544T3 ES99931148T ES99931148T ES2182544T3 ES 2182544 T3 ES2182544 T3 ES 2182544T3 ES 99931148 T ES99931148 T ES 99931148T ES 99931148 T ES99931148 T ES 99931148T ES 2182544 T3 ES2182544 T3 ES 2182544T3
Authority
ES
Spain
Prior art keywords
layer
partial
metal
precursor
catalytic
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.)
Expired - Lifetime
Application number
ES99931148T
Other languages
English (en)
Spanish (es)
Inventor
Gerrit Jan Barend Assink
Hans Michiel Huisman
Gert Jan Kramer
Ronald Jan Schoonebeek
Wim Wieldraaijer
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.)
SHELL INT RESEARCH
Shell Internationale Research Maatschappij BV
Original Assignee
SHELL INT RESEARCH
Shell Internationale Research Maatschappij BV
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
Application filed by SHELL INT RESEARCH, Shell Internationale Research Maatschappij BV filed Critical SHELL INT RESEARCH
Application granted granted Critical
Publication of ES2182544T3 publication Critical patent/ES2182544T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B01J37/024—Multiple impregnation or coating
    • B01J37/0244—Coatings comprising several layers
    • 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/464—Rhodium
    • 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
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
    • B01J23/46—Ruthenium, rhodium, osmium or iridium
    • B01J23/468—Iridium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
    • C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
    • C01B3/32—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air
    • C01B3/34—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents
    • C01B3/38—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents using catalysts
    • C01B3/386—Catalytic partial combustion
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen; Reversible storage of hydrogen
    • C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
    • C01B3/32—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air
    • C01B3/34—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents
    • C01B3/38—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents using catalysts
    • C01B3/40—Production of hydrogen; Production of gaseous mixtures containing hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide or air by reaction of hydrocarbons with gasifying agents using catalysts characterised by the catalyst
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/02—Processes for making hydrogen or synthesis gas
    • C01B2203/025—Processes for making hydrogen or synthesis gas containing a partial oxidation step
    • C01B2203/0261—Processes for making hydrogen or synthesis gas containing a partial oxidation step containing a catalytic partial oxidation step [CPO]
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/10—Catalysts for performing the hydrogen forming reactions
    • C01B2203/1005—Arrangement or shape of catalyst
    • C01B2203/1011—Packed bed of catalytic structures, e.g. particles, packing elements
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/10—Catalysts for performing the hydrogen forming reactions
    • C01B2203/1005—Arrangement or shape of catalyst
    • C01B2203/1023—Catalysts in the form of a monolith or honeycomb
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/10—Catalysts for performing the hydrogen forming reactions
    • C01B2203/1041—Composition of the catalyst
    • C01B2203/1047—Group VIII metal catalysts
    • C01B2203/1064—Platinum group metal catalysts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/10—Catalysts for performing the hydrogen forming reactions
    • C01B2203/1041—Composition of the catalyst
    • C01B2203/1047—Group VIII metal catalysts
    • C01B2203/1064—Platinum group metal catalysts
    • C01B2203/107—Platinum catalysts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/10—Catalysts for performing the hydrogen forming reactions
    • C01B2203/1041—Composition of the catalyst
    • C01B2203/1082—Composition of support materials
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/12—Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205—Composition of the feed
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/12—Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205—Composition of the feed
    • C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
    • C01B2203/1235—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2203/00—Integrated processes for the production of hydrogen or synthesis gas
    • C01B2203/12—Feeding the process for making hydrogen or synthesis gas
    • C01B2203/1205—Composition of the feed
    • C01B2203/1211—Organic compounds or organic mixtures used in the process for making hydrogen or synthesis gas
    • C01B2203/1235—Hydrocarbons
    • C01B2203/1247—Higher hydrocarbons
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Exhaust Gas After Treatment (AREA)
ES99931148T 1998-06-30 1999-06-23 Oxidacion catalitica parcial por medio de dos metales de actividad catalitica. Expired - Lifetime ES2182544T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98305179 1998-06-30

Publications (1)

Publication Number Publication Date
ES2182544T3 true ES2182544T3 (es) 2003-03-01

Family

ID=8234902

Family Applications (1)

Application Number Title Priority Date Filing Date
ES99931148T Expired - Lifetime ES2182544T3 (es) 1998-06-30 1999-06-23 Oxidacion catalitica parcial por medio de dos metales de actividad catalitica.

Country Status (19)

Country Link
US (1) US6702960B1 (https=)
EP (2) EP1098840B1 (https=)
JP (2) JP2002519181A (https=)
KR (2) KR20010053268A (https=)
CN (2) CN1307539A (https=)
AT (2) ATE222214T1 (https=)
AU (2) AU746783B2 (https=)
BR (2) BR9911654A (https=)
CA (2) CA2335970C (https=)
CZ (1) CZ20004900A3 (https=)
DE (2) DE69902547T2 (https=)
DK (1) DK1098840T3 (https=)
ES (1) ES2182544T3 (https=)
ID (2) ID28037A (https=)
NO (2) NO20006580L (https=)
PL (2) PL345190A1 (https=)
PT (1) PT1098840E (https=)
WO (2) WO2000000425A1 (https=)
ZA (2) ZA200100316B (https=)

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US7338644B2 (en) 2000-04-17 2008-03-04 Shell Oil Company Fuel processor
US6436363B1 (en) 2000-08-31 2002-08-20 Engelhard Corporation Process for generating hydrogen-rich gas
AU2002360576A1 (en) * 2001-12-18 2003-06-30 Conocophillips Company Catalyst for SPOC-enhanced synthesis gas production
JP3870783B2 (ja) * 2001-12-27 2007-01-24 日産自動車株式会社 燃料電池自動車用排ガス浄化システムおよび燃料電池自動車の排ガスの浄化方法
WO2004043584A2 (en) * 2002-11-11 2004-05-27 Conocophillips Company Novel syngas catalysts and their method of use
US7888278B2 (en) * 2002-11-11 2011-02-15 Conocophillips Company Stabilized alumina supports, catalysts made therefrom, and their use in partial oxidation
ITMI20031739A1 (it) * 2003-09-11 2005-03-12 Enitecnologie Spa Procedimento di ossidazione parziale catalitica per
DE102004024026A1 (de) * 2004-03-11 2005-09-29 W.C. Heraeus Gmbh Katalysator zur N2O-Zersetzung beim Ostwaldprozess
US20050202966A1 (en) * 2004-03-11 2005-09-15 W.C. Heraeus Gmbh Catalyst for the decomposition of N2O in the Ostwald process
JP4589682B2 (ja) * 2004-08-25 2010-12-01 千代田化工建設株式会社 合成ガス製造用触媒の調製方法
US7569512B2 (en) * 2004-11-10 2009-08-04 Umicore Ag & Co. Kg Zirconia support and zirconia supported catalyst
US20070111884A1 (en) * 2005-11-14 2007-05-17 Laiyuan Chen Catalyst support, supported catalyst, and methods of making and using the same
US20070238610A1 (en) * 2006-04-05 2007-10-11 Laiyuan Chen Fuel reformer catalyst
EP2081866A1 (en) 2006-10-31 2009-07-29 Shell Internationale Research Maatschappij B.V. Process for the production of hydrogen and the use thereof and a process for the operation of a internal combustion engine
US20080260631A1 (en) * 2007-04-18 2008-10-23 H2Gen Innovations, Inc. Hydrogen production process
WO2009140317A1 (en) * 2008-05-15 2009-11-19 Shell Oil Company Method for recovering a natural gas contaminated with high levels of co2
WO2012177136A1 (en) 2011-06-23 2012-12-27 Stamicarbon B.V. Acting Under The Name Of Mt Innovation Center Process for producing a syngas intermediate suitable for the production of hydrogen
WO2012177137A1 (en) 2011-06-23 2012-12-27 Stamicarbon B.V. Acting Under The Name Of Mt Innovation Center Process for producing ammonia and urea
EA026825B1 (ru) 2011-10-26 2017-05-31 Стамикарбон Б.В. Эктин Андер Те Нейм Оф Мт Инновейшн Сентр Способ получения синтез-газа для производства метанола
US9394219B2 (en) 2011-10-26 2016-07-19 Stamicarbon B.V. Method for producing synthesis gas for methanol production
EP3378832B1 (en) 2011-12-19 2024-05-08 Stamicarbon B.V. acting under the name of MT Innovation Center Methof for enhancing the production of urea
CA2877956A1 (en) * 2012-06-29 2014-01-03 Basf Se High-pressure process for carbon dioxide reforming of hydrocarbons in the presence of iridium-containing active masses
JP6253795B2 (ja) 2013-11-06 2017-12-27 ワット・フューエル・セル・コーポレイションＷａｔｔ Ｆｕｅｌ Ｃｅｌｌ Ｃｏｒｐ． ガス状燃料ｃｐｏｘ改質器及びｃｐｏｘ改質の方法
EP3065855B1 (en) 2013-11-06 2022-06-29 Watt Fuel Cell Corp. Liquid fuel cpox reformer and fuel cell systems, and methods of producing electricity
JP6549601B2 (ja) 2013-11-06 2019-07-24 ワット・フューエル・セル・コーポレイションＷａｔｔ Ｆｕｅｌ Ｃｅｌｌ Ｃｏｒｐ． ガス状燃料ｃｐｏｘ改質器と燃料セルの統合システム、及び電気を生成する方法
EP3065854A2 (en) 2013-11-06 2016-09-14 Watt Fuel Cell Corp. Reformer with perovskite as structural component thereof
EP3065861A2 (en) 2013-11-06 2016-09-14 Watt Fuel Cell Corp. Chemical reactor with manifold for management of a flow of gaseous reaction medium thereto
CN105705226B (zh) 2013-11-06 2018-03-27 瓦特燃料电池公司 液体燃料催化部分氧化重整器和催化部分氧化重整方法
EP2886514A1 (de) * 2013-12-20 2015-06-24 Basf Se Verfahren zur Reformierung von Gemischen aus Kohlenwasserstoffen und Kohlendioxid
JP5994808B2 (ja) 2014-03-05 2016-09-21 トヨタ自動車株式会社 排ガス浄化用触媒及びその製造方法
PL3169663T3 (pl) 2014-07-15 2020-07-27 Stamicarbon B.V. Acting Under The Name Of Mt Innovation Center Sposób usprawniania zespołu produkcyjnego mocznika
WO2017065613A1 (en) 2015-10-15 2017-04-20 Stamicarbon B.V. Acting Under The Name Of Mt Innovation Center Process for the production of methanol
JP7320321B2 (ja) 2019-08-29 2023-08-03 ワット・フューエル・セル・コーポレイション ガス相発熱反応開始用点火器付き多管状化学反応器

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EP0303438A3 (en) * 1987-08-14 1989-12-27 DAVY McKEE CORPORATION Production of synthesis gas from hydrocarbonaceous feedstock
IT1238676B (it) * 1990-01-26 1993-09-01 Snam Progetti Sistema catalitico e procedimento per la produzione di gas di sintesi mediante reazione di reforming di idrocarubri leggeri con co2
JP3061399B2 (ja) * 1990-06-20 2000-07-10 株式会社日本触媒 ディーゼルエンジン排ガス浄化用触媒および浄化方法
IT1256227B (it) * 1992-12-23 1995-11-29 Snam Progetti Procedimento catalitico per la produzione di gas di sintesi
NZ260621A (en) * 1993-06-18 1996-03-26 Shell Int Research Process for catalytic partial oxidation of hydrocarbon feedstock
IT1272532B (it) * 1993-08-27 1997-06-23 Snam Progetti Processo di ossidazione parziale catalitica del gas naturale per ottenere gas di sintesi e formaldeide
US5658497A (en) * 1995-12-05 1997-08-19 Shell Oil Company Process for the catalytic partial oxidation of hydrocarbons using a certain catalyst support
US5883138A (en) * 1997-04-25 1999-03-16 Exxon Research And Engineering Company Rapid injection catalytic partial oxidation process and apparatus for producing synthesis gas (law 562)

Also Published As

Publication number Publication date
BR9911739A (pt) 2001-04-03
DE69905467T2 (de) 2003-09-11
DK1098840T3 (da) 2002-12-09
NO20006580D0 (no) 2000-12-21
WO2000000425A1 (en) 2000-01-06
AU746783B2 (en) 2002-05-02
AU743727B2 (en) 2002-01-31
PL345181A1 (en) 2001-12-03
ZA200100316B (en) 2001-08-29
CN1307538A (zh) 2001-08-08
AU4776299A (en) 2000-01-17
PT1098840E (pt) 2002-11-29
EP1098840A1 (en) 2001-05-16
ZA200100317B (en) 2001-07-23
PL345190A1 (en) 2001-12-03
CZ20004900A3 (cs) 2001-08-15
NO20006579D0 (no) 2000-12-21
DE69905467D1 (de) 2003-03-27
ID28037A (id) 2001-05-03
CA2335970C (en) 2009-01-06
DE69902547T2 (de) 2003-05-22
EP1098840B1 (en) 2002-08-14
NO20006579L (no) 2000-12-21
EP1093439B1 (en) 2003-02-19
DE69902547D1 (de) 2002-09-19
EP1093439A1 (en) 2001-04-25
BR9911654A (pt) 2001-03-20
JP2002519182A (ja) 2002-07-02
KR20010053268A (ko) 2001-06-25
ID27777A (id) 2001-04-26
JP2002519181A (ja) 2002-07-02
ATE232836T1 (de) 2003-03-15
CA2335983A1 (en) 2000-01-06
AU4777699A (en) 2000-01-17
NO20006580L (no) 2000-12-21
US6702960B1 (en) 2004-03-09
ATE222214T1 (de) 2002-08-15
CA2335970A1 (en) 2000-01-06
CN1307539A (zh) 2001-08-08
KR20010053267A (ko) 2001-06-25
WO2000000426A1 (en) 2000-01-06

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