ES475293A1 - Un metodo para preparar un catalizador de cristalitos de platino soportado sobre carbon. - Google Patents

Un metodo para preparar un catalizador de cristalitos de platino soportado sobre carbon.

Info

Publication number
ES475293A1
ES475293A1 ES475293A ES475293A ES475293A1 ES 475293 A1 ES475293 A1 ES 475293A1 ES 475293 A ES475293 A ES 475293A ES 475293 A ES475293 A ES 475293A ES 475293 A1 ES475293 A1 ES 475293A1
Authority
ES
Spain
Prior art keywords
carbon
catalyst
platinum catalyst
supported platinum
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
Application number
ES475293A
Other languages
English (en)
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.)
Raytheon Technologies Corp
Original Assignee
United Technologies 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
Priority claimed from US05/854,284 external-priority patent/US4137372A/en
Priority claimed from US05/854,285 external-priority patent/US4137373A/en
Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of ES475293A1 publication Critical patent/ES475293A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/92—Metals of platinum group
    • H01M4/925—Metals of platinum group supported on carriers, e.g. powder carriers
    • H01M4/926—Metals of platinum group supported on carriers, e.g. powder carriers on carbon or graphite
    • 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
    • B01J23/42—Platinum
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/90—Selection of catalytic material
    • H01M4/92—Metals of platinum group
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M4/96—Carbon-based electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M2004/8678—Inert electrodes with catalytic activity, e.g. for fuel cells characterised by the polarity
    • H01M2004/8684—Negative electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
    • H01M2004/8678—Inert electrodes with catalytic activity, e.g. for fuel cells characterised by the polarity
    • H01M2004/8689—Positive electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2300/00—Electrolytes
    • H01M2300/0002—Aqueous electrolytes
    • H01M2300/0005—Acid electrolytes
    • H01M2300/0008—Phosphoric acid-based
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Abstract

Método para preparar un catalizador de cristalitos de platino soportado sobre carbón para reducir esencialmente la migración de dichos cristalitos sobre la superficie de las partículas de carbón durante el tratamiento o empleo de dicho catalizador caracterizado porque comprende una primera etapa en la que se deposita carbón poroso sobre y entorno de los cristalitos de platino soportados, cuya realización incluye calentar el catalizador en presencia de un compuesto carbonáceo para descomponer dicho compuesto para formar carbón poroso, adoptando dicho compuesto carbonáceo la forma de un gas o vapor y calentando dicho catalizador en presencia de dicho gas o vapor, a una temperatura comprendida en la gama de 260º a 427ºC durante uno a sesenta minutos y especialmente a una temperatura máxima de 371ºC durante unos diez minutos y porque, en una segunda etapa se somete el catalizador, después de la etapa de deposición de carbón, a un tratamiento térmico en una atmósfera inerte o vacío a una gama detemperatura dentro de dicha gama durante un tiempo comprendido entre media hora y seis horas, preferentemente entre 899 y 960ºC manteniendo la temperatura durante un período de tiempo comprendido entre tres cuartos de hora y una hora y media.
ES475293A 1977-11-23 1978-11-22 Un metodo para preparar un catalizador de cristalitos de platino soportado sobre carbon. Expired ES475293A1 (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US85428377A 1977-11-23 1977-11-23
US85428677A 1977-11-23 1977-11-23
US05/854,284 US4137372A (en) 1977-11-23 1977-11-23 Catalyst and method for making
US05/854,285 US4137373A (en) 1977-11-23 1977-11-23 Platinum catalyst and method for making

Publications (1)

Publication Number Publication Date
ES475293A1 true ES475293A1 (es) 1980-04-01

Family

ID=27505919

Family Applications (1)

Application Number Title Priority Date Filing Date
ES475293A Expired ES475293A1 (es) 1977-11-23 1978-11-22 Un metodo para preparar un catalizador de cristalitos de platino soportado sobre carbon.

Country Status (10)

Country Link
JP (1) JPS5482394A (es)
BR (1) BR7807532A (es)
CH (1) CH638693A5 (es)
DE (1) DE2848138A1 (es)
DK (1) DK155575C (es)
ES (1) ES475293A1 (es)
FR (1) FR2409792B1 (es)
GB (1) GB2008429B (es)
IL (1) IL55885A (es)
SE (1) SE439438B (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6415809A (en) * 1987-07-10 1989-01-19 Fuji Electric Co Ltd Monitor system for working time of control panel
JP4061573B2 (ja) 2001-05-18 2008-03-19 ソニー株式会社 導電性触媒粒子の製造方法及びガス拡散性触媒電極の製造方法、並びに導電性触媒粒子の製造方法に用いる装置
JP4061575B2 (ja) * 2001-06-01 2008-03-19 ソニー株式会社 導電性触媒粒子及びその製造方法、ガス拡散性触媒電極及び電気化学デバイス
JP2007050319A (ja) * 2005-08-16 2007-03-01 Ritsumeikan 複合触媒粒子
WO2009128203A1 (ja) 2008-04-14 2009-10-22 パナソニック株式会社 表面ナノ構造を有する酸素極を備える燃料電池

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2358359A (en) * 1939-05-17 1944-09-19 Colorado Fuel & Iron Corp Active carbon production
GB1018373A (en) * 1963-03-26 1966-01-26 Du Pont Hydrogenation catalysts
US3979329A (en) * 1969-12-12 1976-09-07 Johnson Matthey & Co., Limited Carbon molecular sieve catalyst
US3881957A (en) * 1972-03-17 1975-05-06 Universal Oil Prod Co Electrochemical cell comprising a catalytic electrode of a refractory oxide and a carbonaceous pyropolymer
US3964933A (en) * 1974-04-08 1976-06-22 Exxon Research And Engineering Company Carbon article including electrodes and methods of making the same
US4028274A (en) * 1976-06-01 1977-06-07 United Technologies Corporation Support material for a noble metal catalyst and method for making the same

Also Published As

Publication number Publication date
JPS5482394A (en) 1979-06-30
BR7807532A (pt) 1979-07-24
DK521478A (da) 1979-05-24
FR2409792B1 (fr) 1986-05-16
GB2008429A (en) 1979-06-06
IL55885A (en) 1981-11-30
GB2008429B (en) 1982-04-28
IL55885A0 (en) 1979-01-31
FR2409792A1 (fr) 1979-06-22
SE439438B (sv) 1985-06-17
SE7811784L (sv) 1979-05-24
CH638693A5 (de) 1983-10-14
JPS5748258B2 (es) 1982-10-15
DK155575C (da) 1989-09-18
DK155575B (da) 1989-04-24
DE2848138C2 (es) 1989-08-03
DE2848138A1 (de) 1979-06-13

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20000201