DE69002487D1 - Elektrokatalysator, bestehend aus einer platinlegierung. - Google Patents

Elektrokatalysator, bestehend aus einer platinlegierung.

Info

Publication number
DE69002487D1
DE69002487D1 DE9090104453T DE69002487T DE69002487D1 DE 69002487 D1 DE69002487 D1 DE 69002487D1 DE 9090104453 T DE9090104453 T DE 9090104453T DE 69002487 T DE69002487 T DE 69002487T DE 69002487 D1 DE69002487 D1 DE 69002487D1
Authority
DE
Germany
Prior art keywords
platinum alloy
electric catalyst
catalyst
electric
platinum
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 - Fee Related
Application number
DE9090104453T
Other languages
English (en)
Other versions
DE69002487T2 (de
Inventor
Takashi Itoh
Katsuaki Katoh
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.)
NE Chemcat Corp
Original Assignee
NE Chemcat Corp
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 NE Chemcat Corp filed Critical NE Chemcat Corp
Application granted granted Critical
Publication of DE69002487D1 publication Critical patent/DE69002487D1/de
Publication of DE69002487T2 publication Critical patent/DE69002487T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/86Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90Selection of catalytic material
    • H01M4/92Metals of platinum group
    • H01M4/925Metals of platinum group supported on carriers, e.g. powder carriers
    • H01M4/926Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/86Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90Selection of catalytic material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/86Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90Selection of catalytic material
    • H01M4/92Metals of platinum group
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/86Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M2004/8678Inert electrodes with catalytic activity, e.g. for fuel cells characterised by the polarity
    • H01M2004/8684Negative electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/86Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M2004/8678Inert electrodes with catalytic activity, e.g. for fuel cells characterised by the polarity
    • H01M2004/8689Positive electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00Electrolytes
    • H01M2300/0002Aqueous electrolytes
    • H01M2300/0005Acid electrolytes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00Electrolytes
    • H01M2300/0002Aqueous electrolytes
    • H01M2300/0005Acid electrolytes
    • H01M2300/0008Phosphoric acid-based
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00Electrolytes
    • H01M2300/0002Aqueous electrolytes
    • H01M2300/0005Acid electrolytes
    • H01M2300/0011Sulfuric acid-based
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Catalysts (AREA)
  • Inert Electrodes (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
DE90104453T 1989-03-09 1990-03-08 Elektrokatalysator, bestehend aus einer Platinlegierung. Expired - Fee Related DE69002487T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1055109A JPH0697615B2 (ja) 1989-03-09 1989-03-09 白金合金電極触媒

Publications (2)

Publication Number Publication Date
DE69002487D1 true DE69002487D1 (de) 1993-09-09
DE69002487T2 DE69002487T2 (de) 1993-12-16

Family

ID=12989584

Family Applications (1)

Application Number Title Priority Date Filing Date
DE90104453T Expired - Fee Related DE69002487T2 (de) 1989-03-09 1990-03-08 Elektrokatalysator, bestehend aus einer Platinlegierung.

Country Status (4)

Country Link
US (1) US5024905A (de)
EP (1) EP0386764B1 (de)
JP (1) JPH0697615B2 (de)
DE (1) DE69002487T2 (de)

Families Citing this family (88)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2909166B2 (ja) * 1990-07-31 1999-06-23 エヌ・イーケムキヤツト株式会社 担持白金四元系合金電極触媒
JPH05208135A (ja) * 1991-02-23 1993-08-20 Tanaka Kikinzoku Kogyo Kk 負極用電極触媒
US5189005A (en) * 1992-04-03 1993-02-23 Tanaka Kikinzoku Kogyo K.K. Electrocatalyst and process of preparing same
DE19517598C1 (de) * 1995-05-13 1997-01-02 Degussa Platin-Aluminium-Legierungskatalysator und dessen Verwendung in Brennstoffzellen
JP3874380B2 (ja) * 1996-08-26 2007-01-31 エヌ・イーケムキャット株式会社 空格子点型格子欠陥を有するカーボン担持白金スケルトン合金電極触媒
US6297185B1 (en) 1998-02-23 2001-10-02 T/J Technologies, Inc. Catalyst
US6753108B1 (en) * 1998-02-24 2004-06-22 Superior Micropowders, Llc Energy devices and methods for the fabrication of energy devices
US6417133B1 (en) 1998-02-25 2002-07-09 Monsanto Technology Llc Deeply reduced oxidation catalyst and its use for catalyzing liquid phase oxidation reactions
US6576214B2 (en) * 2000-12-08 2003-06-10 Hydrocarbon Technologies, Inc. Catalytic direct production of hydrogen peroxide from hydrogen and oxygen feeds
DE19848032A1 (de) * 1998-10-17 2000-04-20 Degussa Pt/Rh/Fe-Legierungskatalysator für Brennstoffzellen und Verfahren zu dessen Herstellung
WO2000055928A2 (en) * 1999-02-26 2000-09-21 Symyx Technologies, Inc. Platinum-ruthenium-nickel alloy for use as a fuel cell catalyst
CN1439032A (zh) * 2000-06-02 2003-08-27 Sri国际公司 聚合物组合物
DE10108695A1 (de) * 2001-02-23 2002-09-05 Varta Geraetebatterie Gmbh Galvanisches Element mit mindestens einer lithiuminterkalierenden Elektrode
US6670301B2 (en) * 2001-03-19 2003-12-30 Brookhaven Science Associates Llc Carbon monoxide tolerant electrocatalyst with low platinum loading and a process for its preparation
EP1254711A1 (de) 2001-05-05 2002-11-06 OMG AG & Co. KG Edelmetallhaltiger Trägerkatalysator und Verfahren zu seiner Herstellung
EP1254712B1 (de) * 2001-05-05 2005-07-20 Umicore AG & Co. KG Edelmetallhaltiger geträgerter Katalysator und Verfahren zu seiner Herstellung
US7005206B2 (en) * 2001-06-01 2006-02-28 Polyfuel, Inc. Fuel cell assembly for portable electronic device and interface, control, and regulator circuit for fuel cell powered electronic device
US7316855B2 (en) * 2001-06-01 2008-01-08 Polyfuel, Inc. Fuel cell assembly for portable electronic device and interface, control, and regulator circuit for fuel cell powered electronic device
US20030054955A1 (en) * 2001-07-26 2003-03-20 Loewenstein Michael A. Novel method for the preparation of supported bimetallic catalysts
JP2003157857A (ja) * 2001-11-20 2003-05-30 Toyota Central Res & Dev Lab Inc 燃料電池用電極触媒体、それを用いた燃料電池用空気極、およびその触媒活性評価方法
EP1460705A4 (de) * 2001-12-27 2006-09-13 Daihatsu Motor Co Ltd Brennstoffzelle
US6746597B2 (en) * 2002-01-31 2004-06-08 Hydrocarbon Technologies, Inc. Supported noble metal nanometer catalyst particles containing controlled (111) crystal face exposure
US7282282B2 (en) * 2002-04-04 2007-10-16 The Board Of Trustees Of The University Of Illinois Organic fuel cells and fuel cell conducting sheets
US7740974B2 (en) 2002-04-04 2010-06-22 The Board Of Trustees Of The University Of Illinois Formic acid fuel cells and catalysts
US7785728B2 (en) * 2002-04-04 2010-08-31 The Board Of Trustees Of The University Of Illinois Palladium-based electrocatalysts and fuel cells employing such electrocatalysts
US7132188B2 (en) * 2002-04-04 2006-11-07 The Board Of Trustees Of The University Of Illinois Fuel cells and fuel cell catalysts
IL163754A0 (en) 2002-04-23 2005-12-18 Mauser Werke Gmbh & Co Kg Plastic container
WO2004051781A2 (en) * 2002-12-02 2004-06-17 Polyfuel, Inc. Fuel cell cartridge for portable electronic device
US7067103B2 (en) 2003-03-28 2006-06-27 Headwaters Nanokinetix, Inc. Direct hydrogen peroxide production using staged hydrogen addition
WO2004107482A1 (en) * 2003-05-27 2004-12-09 Symyx Technologies, Inc. Platinum-vanadium-iron fuel cell electrocatalyst
JP4590937B2 (ja) * 2003-07-02 2010-12-01 日産自動車株式会社 電極触媒およびその製造方法
US7569508B2 (en) * 2004-11-17 2009-08-04 Headwaters Technology Innovation, Llc Reforming nanocatalysts and method of making and using such catalysts
US7011807B2 (en) * 2003-07-14 2006-03-14 Headwaters Nanokinetix, Inc. Supported catalysts having a controlled coordination structure and methods for preparing such catalysts
US7655137B2 (en) 2003-07-14 2010-02-02 Headwaters Technology Innovation, Llc Reforming catalysts having a controlled coordination structure and methods for preparing such compositions
US7045479B2 (en) * 2003-07-14 2006-05-16 Headwaters Nanokinetix, Inc. Intermediate precursor compositions used to make supported catalysts having a controlled coordination structure and methods for preparing such compositions
US7144565B2 (en) * 2003-07-29 2006-12-05 Headwaters Nanokinetix, Inc. Process for direct catalytic hydrogen peroxide production
WO2005024982A2 (en) * 2003-08-18 2005-03-17 Symyx Technologies, Inc. Platinum-copper fuel cell catalyst
US20050112450A1 (en) * 2003-09-08 2005-05-26 Intematix Corporation Low platinum fuel cell catalysts and method for preparing the same
US8211593B2 (en) * 2003-09-08 2012-07-03 Intematix Corporation Low platinum fuel cells, catalysts, and method for preparing the same
US7351444B2 (en) * 2003-09-08 2008-04-01 Intematix Corporation Low platinum fuel cell catalysts and method for preparing the same
JP4198582B2 (ja) * 2003-12-02 2008-12-17 独立行政法人科学技術振興機構 タンタルオキシナイトライド酸素還元電極触媒
KR100551035B1 (ko) * 2004-04-27 2006-02-13 삼성에스디아이 주식회사 연료전지용 촉매 및 그 제조방법과 이를 포함하는연료전지 시스템
US7811965B2 (en) 2004-08-18 2010-10-12 Symyx Solutions, Inc. Platinum-copper-nickel fuel cell catalyst
WO2006031938A2 (en) * 2004-09-15 2006-03-23 Monsanto Technology Llc Oxidation catalyst and its use for catalyzing liquid phase oxidation reactions
US7713910B2 (en) * 2004-10-29 2010-05-11 Umicore Ag & Co Kg Method for manufacture of noble metal alloy catalysts and catalysts prepared therewith
JP4725081B2 (ja) * 2004-11-16 2011-07-13 株式会社エクォス・リサーチ 燃料電池の電極及び膜電極接合体
US7632775B2 (en) * 2004-11-17 2009-12-15 Headwaters Technology Innovation, Llc Multicomponent nanoparticles formed using a dispersing agent
US7855021B2 (en) * 2004-12-22 2010-12-21 Brookhaven Science Associates, Llc Electrocatalysts having platium monolayers on palladium, palladium alloy, and gold alloy core-shell nanoparticles, and uses thereof
US9005331B2 (en) 2004-12-22 2015-04-14 Brookhaven Science Associates, Llc Platinum-coated non-noble metal-noble metal core-shell electrocatalysts
US7691780B2 (en) * 2004-12-22 2010-04-06 Brookhaven Science Associates, Llc Platinum- and platinum alloy-coated palladium and palladium alloy particles and uses thereof
US7422994B2 (en) * 2005-01-05 2008-09-09 Symyx Technologies, Inc. Platinum-copper-tungsten fuel cell catalyst
US7449423B2 (en) * 2005-01-14 2008-11-11 Headwaters Technology Innovation, Llc Heat treatment of anchored nanocatalysts in a non-zero oxidation state and catalysts made by such method
US20080044719A1 (en) * 2005-02-02 2008-02-21 Symyx Technologies, Inc. Platinum-copper-titanium fuel cell catalyst
US7803201B2 (en) * 2005-02-09 2010-09-28 Headwaters Technology Innovation, Llc Organically complexed nanocatalysts for improving combustion properties of fuels and fuel compositions incorporating such catalysts
US7856992B2 (en) * 2005-02-09 2010-12-28 Headwaters Technology Innovation, Llc Tobacco catalyst and methods for reducing the amount of undesirable small molecules in tobacco smoke
US7357903B2 (en) * 2005-04-12 2008-04-15 Headwaters Heavy Oil, Llc Method for reducing NOx during combustion of coal in a burner
JP2009503261A (ja) * 2005-08-03 2009-01-29 アルヘメイネ ゴールト−ウント シルベルシェイデンスタルテ アーゲー 白金合金およびその製造方法
CA2618220A1 (en) * 2005-08-03 2007-02-08 Allgemeine Gold-und Silberscheideanstalt AG Platinum alloy and method of production thereof
US7396795B2 (en) * 2005-08-31 2008-07-08 Headwaters Technology Innovation, Llc Low temperature preparation of supported nanoparticle catalysts having increased dispersion
US7691522B2 (en) * 2006-03-09 2010-04-06 Honda Motor Co., Ltd. Platinum, titanium and copper, manganese and iron containing electrocatalysts
US7704628B2 (en) * 2006-05-08 2010-04-27 Honda Motor Co., Ltd. Platinum, titanium, cobalt and palladium containing electrocatalysts
US7758660B2 (en) * 2006-02-09 2010-07-20 Headwaters Technology Innovation, Llc Crystalline nanocatalysts for improving combustion properties of fuels and fuel compositions incorporating such catalysts
US7718710B2 (en) * 2006-03-17 2010-05-18 Headwaters Technology Innovation, Llc Stable concentrated metal colloids and methods of making same
US7541309B2 (en) * 2006-05-16 2009-06-02 Headwaters Technology Innovation, Llc Reforming nanocatalysts and methods of making and using such catalysts
US7879752B2 (en) * 2006-08-11 2011-02-01 GM Global Technology Operations LLC Electrocatalyst
US7563742B2 (en) 2006-09-22 2009-07-21 Headwaters Technology Innovation, Llc Supported nickel catalysts having high nickel loading and high metal dispersion and methods of making same
US7601668B2 (en) 2006-09-29 2009-10-13 Headwaters Technology Innovation, Llc Methods for manufacturing bi-metallic catalysts having a controlled crystal face exposure
KR100823505B1 (ko) * 2006-11-20 2008-04-21 삼성에스디아이 주식회사 연료 전지용 촉매, 이의 제조방법, 이를 포함하는 연료전지용 막-전극 어셈블리 및 연료전지 시스템
KR100823502B1 (ko) * 2006-11-20 2008-04-21 삼성에스디아이 주식회사 연료 전지용 촉매, 이의 제조방법, 이를 포함하는 연료전지용 막-전극 어셈블리 및 연료전지 시스템
US8383293B2 (en) * 2006-11-22 2013-02-26 GM Global Technology Operations LLC Supports for fuel cell catalysts based on transition metal silicides
US8252953B2 (en) 2008-05-01 2012-08-28 Monsanto Technology Llc Metal utilization in supported, metal-containing catalysts
WO2010050964A1 (en) * 2008-10-31 2010-05-06 Utc Power Corporation Quaternary alloy catalyst for fuel cell
EP2409351A1 (de) * 2009-03-18 2012-01-25 UTC Power Corporation Verfahren zur bildung eines ternärlegierungskatalysators für brennstoffzellen
KR101107073B1 (ko) * 2009-06-05 2012-01-20 삼성에스디아이 주식회사 연료전지용 촉매 및 이를 포함하는 연료전지 시스템
EP2454772B1 (de) 2009-07-17 2013-12-25 Danmarks Tekniske Universitet Platin- und palladium-legierungen als brennstoffzellenelektroden
US8592339B2 (en) * 2009-11-23 2013-11-26 The Research Foundation For The State University Of New York Catalytic platinum-copper alloy nanoparticles
WO2011075125A1 (en) 2009-12-17 2011-06-23 United Technologies Corporation Supported catalyst
US20150325861A1 (en) 2012-07-06 2015-11-12 Denmarks Tekniske Universitet Platinum and palladium alloys suitable as fuel cell electrodes
KR20160089269A (ko) 2012-11-21 2016-07-27 덴마크스 텍니스케 유니버시테트 연료 전지 전극으로 적합한 백금과 팔라듐 합금
JP6172281B2 (ja) * 2013-08-09 2017-08-02 日産自動車株式会社 触媒粒子ならびにこれを用いる電極触媒、電解質膜−電極接合体および燃料電池
WO2015028878A1 (en) 2013-09-02 2015-03-05 Tata Chemicals Limited A modified bimetallic nanoparticle and a process to prepare the same
JP6404069B2 (ja) * 2014-10-01 2018-10-10 国立研究開発法人産業技術総合研究所 合金ナノ粒子含有カーボン電極、当該電極を含む装置、及び、当該電極の製造方法
KR102178388B1 (ko) * 2017-12-11 2020-11-13 한국과학기술연구원 Pt-Ni 합금을 포함하는 촉매, 촉매 조성물 및 이를 이용한 과산화수소 합성 방법
CN113166944B (zh) 2018-09-28 2024-07-30 丹麦技术大学 生产合金纳米颗粒的方法
US11355761B2 (en) 2019-12-31 2022-06-07 Robert Bosch Gmbh Polyelemental catalyst structures for fuel cells
CN115188978B (zh) * 2022-08-05 2023-04-21 中国科学技术大学 负载型多晶面缺陷的高熵合金催化剂的制备方法及应用
WO2024040088A1 (en) * 2022-08-16 2024-02-22 The Johns Hopkins University Multi-principal element alloy (mpea) nanoparticles
CN116154200B (zh) * 2022-12-30 2024-05-31 郑州佛光发电设备股份有限公司 一种多金属原子负载的氮化碳催化剂及其应用

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447506A (en) * 1983-01-17 1984-05-08 United Technologies Corporation Ternary fuel cell catalysts containing platinum, cobalt and chromium
US4711829A (en) * 1985-12-23 1987-12-08 International Fuel Cells Corporation Ordered ternary fuel cell catalysts containing platinum and cobalt
JPS62163746A (ja) * 1986-01-13 1987-07-20 Nippon Engeruharudo Kk 白金合金電極触媒およびそれを使用した酸電解質燃料電池用電極
JPS62269751A (ja) * 1986-05-16 1987-11-24 Nippon Engeruharudo Kk 白金−銅合金電極触媒およびそれを使用した酸電解質燃料電池用電極
US4806515A (en) * 1987-11-16 1989-02-21 United Technologies Corporation Ternary fuel cell catalyst containing platinum and gallium

Also Published As

Publication number Publication date
EP0386764A3 (de) 1991-06-05
DE69002487T2 (de) 1993-12-16
EP0386764A2 (de) 1990-09-12
JPH0697615B2 (ja) 1994-11-30
EP0386764B1 (de) 1993-08-04
US5024905A (en) 1991-06-18
JPH02236960A (ja) 1990-09-19

Similar Documents

Publication Publication Date Title
DE69002487D1 (de) Elektrokatalysator, bestehend aus einer platinlegierung.
DE68908042D1 (de) Elektrokatalysator, bestehend aus einer platinlegierung auf einem traeger.
DE69102365D1 (de) Elektrokatalysator, bestehend aus einer quaternären Platinlegierung auf einem Träger.
DE58908506D1 (de) Netzwerkschnittstelle.
DE3767751D1 (de) Wickeldraht.
DE58907696D1 (de) Netzwerkschnittstelle.
DE3566397D1 (de) Certain-2-(2'-alkylbenzoyl)-1,3-cyclohexanediones
NO872601L (no) Soppdrepende carbinoler.
DE59000997D1 (de) Oxidationshaarfaerbemittel.
DE69001749D1 (de) Elektrisches rasiergeraet.
DE59000225D1 (de) Palladiumkatalysatoren.
TR23360A (tr) Islah edilmis gümüs katalizör.
FI871780A0 (fi) Separering av nickel fraon koppar i autoklav.
ES537523A0 (es) Un procedimiento de preparar un catalizador a base de una zeolita de tipo l y un metal noble.
DE3777478D1 (de) Feine amorphe metalldraehte.
NO872215D0 (no) Nikkellegering.
ATE61055T1 (de) 1,4-dihydropyridine.
DE3685521D1 (de) Ekg-elektrode aus einer amorphen legierung.
DE68908270D1 (de) Katalysatorzusammensetzungen.
FI854385A0 (fi) Foer engaongsbruk avsett, vaetskeabsorberande alster.
FI873323A (fi) Krom-innehaollande bimetalliska komplexkatalyter.
DK174185A (da) Nikkelboridpolymerkatalysator
DE3674654D1 (de) Nibbelschere.
DE3675432D1 (de) 1,3-dioxanaether.
DE3678684D1 (de) Methanisierungskatalysator.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee