DE1417753A1 - Process for the catalytic decomposition of boranates, preferably of alkali boranates, with evolution of hydrogen - Google Patents
Process for the catalytic decomposition of boranates, preferably of alkali boranates, with evolution of hydrogenInfo
- Publication number
- DE1417753A1 DE1417753A1 DE19611417753 DE1417753A DE1417753A1 DE 1417753 A1 DE1417753 A1 DE 1417753A1 DE 19611417753 DE19611417753 DE 19611417753 DE 1417753 A DE1417753 A DE 1417753A DE 1417753 A1 DE1417753 A1 DE 1417753A1
- Authority
- DE
- Germany
- Prior art keywords
- boranates
- hydrogen
- evolution
- alkali
- boranate
- 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.)
- Pending
Links
Classifications
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- 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
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/065—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents from a hydride
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/22—Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen
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- 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
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- 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
Description
Verfahren zur katalytischen Zersetzung von Bo:#anatent vorzugsweise von Alkaliboranat'en, unter Was3erstoff,entwicklung Die vorliegencle Erfindung betrifft, ein Verfahren, mittels dessen Boranate unter Wasserstoffentwicklung auf katalytischem Wege zersetzt werden können.. Das erfindungsgemässe Verfahren eignet sich insbesondere zur Zersetzung von Alkaliboranaten.Process for the catalytic decomposition of Bo: #anatent preferably of alkali boronates, under hydrogen, development The present invention relates to a process by means of which boranates are catalytic with evolution of hydrogen Ways can be decomposed .. The inventive method is particularly suitable for the decomposition of alkali boranates.
Die Verwendung von Boranaten zur Wasserstoffgewinnung ist an sich bereits bekannt. Nach einem. bekannten Vorschlag wird sie ckurch E#tübr;in#en der Boranate, die mit sauren Substanzen gemischt sinci, in Wasser durchgeführt, wobei sich jedoch als nachteilig erwiesen .hat# I dass eine Lagerung der Mischung vor ihrer Zersetzung nur unter bestimmten Torsichtsmassregeln erfolgen kann.The use of boranates for hydrogen production is in itself already known. After a. known suggestion, it will be passed by E # t; in # en the Boranates, which sinci mixed with acidic substances, carried out in water, being However, it has proven to be disadvantageous. That the mixture has to be stored before their decomposition can only take place under certain precautionary measures.
Nach einem anderen bekanntenVorschlag- werden die Boranate mit pulverförmigen Katalysatorenx wie beispielsweise Platin oder Palladium, zu Tabletten verpresst und durch Einbringen, in Wasser zersetzt. Als Nachteil dieses bekannten Verfahrens ist vor, allem-zu erwähnen, dasa es relativ teure Katalysatoren, verlangt, was Umsomehr ina Gewicht fällt, ala relativ grosse Mengen dieser Katalysatoren erforderlich ein4.-Zum anderen läazt sich-aber bei diesem bekannten Vorschlag die'einmal eingeleitete Wasserstoffentwicklung .nicht mehr steuern, da die Reaktion erst dann endet, wenn das ge.-samte Boranat zersetzt ist.According to another known proposal, the boranates are pressed into tablets with powdered catalysts, such as platinum or palladium, and are decomposed by introducing them into water. The main disadvantage of this known process is to mention that it requires relatively expensive catalysts, which is all the more weight, and requires relatively large amounts of these catalysts Do not control the evolution of hydrogen that has been initiated, as the reaction only ends when the entire boranate has decomposed.
Hier schafft nun die vorliegende Erfindung dadurch Abhilfe" daes eine alkalische Boranatlösung durch eine Schüttung, einen Sinterkörper o.dgl. aus einem Metall hindurchgedrückt wird, das Hydride zu bilden vermag.The present invention provides a remedy here alkaline boranate solution through a bed, a sintered body or the like. from a Metal is pushed through which is able to form hydrides.
Bei dem erfin&ungegemäasen Verfahren hat man ea ohne weiterei in der Handt durch eine passende Auswanl der Katalysatoren die Geschwindigkeit der Wasserstoffentwickiung bzw. der Boranatzersetzung zu steuern. Darüberhinaus kann diese Steuerung aber auch durch Regulierung der ZulaufgeschwindigkEiit der Boranatlösung eingestellt werden, wobei es selbstverständlich möglich isty die Wasserstoffentwicklung in jedem beliebigen Zeitpunkt ganz zu unterbrechen, indem die Zufuhr von Boranat zu den Katalysatoren eingestellt wird. Die Durchführung des erfindungegemässen Verfahrens sei im nachfolgenden noch durch einige Ausführungsbeispiele näher erläutert: Beis-Piel 1 Zur Erzeugung von Wasserstoff für einen Sintervorgangunter Schutzgas wurde als Katalysator eine Schuttung von groben Raney-Nickelkörnern benutzt, die zuvor mit konzentrierter Alkalilauge aktiviert worden waren. Diese Schüttung befand sich in einem Druckgefäss und wurde kontinuierlich mit einer etwa 5%igen Lösung von NaBH4 in ln NaOH versetzt.In the case of the process according to the invention, one has to control the rate of hydrogen evolution and the rate of boraneate decomposition without any further effort by a suitable selection of the catalysts. In addition, this control can also be set by regulating the feed rate of the boranate solution, whereby it is of course possible to completely interrupt the evolution of hydrogen at any point in time by stopping the supply of boranate to the catalysts. The implementation of the process according to the invention is explained in more detail below by means of a few exemplary embodiments: Beis-Piel 1 To generate hydrogen for a sintering process under protective gas, a bed of coarse Raney nickel grains that had previously been activated with concentrated alkali was used as a catalyst. This bed was located in a pressure vessel and an approximately 5% solution of NaBH4 in 1N NaOH was continuously added.
Hierbei entwickelte sich ein kräftiger" gleichmässiger Wasserstoffstrom, der dem Verbraucher zugeführt wurde.A strong "steady flow of hydrogen developed, which was supplied to the consumer.
Während des gesamten Vorganges wurde die verbrauchte, das heiast boranatfreie Lösung ebenfalls kontinuierlich aus dem Druckgefäaa abgezogen.During the entire process, the used, i.e. boranate-free Solution also continuously withdrawn from the pressure vessel.
Bei Unterbrechung der Boranatzufuhr kam die Waseerstoffentwicklung schlagartig zum Stehen.When the boranate feed was interrupted, the evolution of hydrogen occurred abruptly to stand.
Beispiel 2 Zur Erzeugung eines weniger heftigen Wasserstoffstroms wurde das Raney-Nickel aurch gewöhnliches Nickelpulver ersetzt. Example 2 The Raney nickel was replaced with ordinary nickel powder to produce a less violent flow of hydrogen.
Hier vergingen etwa 30 Sekunden, bis es nach der ersten Boranatzugabe zu einer Wasserstoffentwicklung kam, die jedoch dann ebenfalls wieder überaus gleichmässig war. Nach Abstellen der Boranatzufuhr dauerte es wiederum eine gewisse Zeit, bis die Wasserstoffentwicklung aufhörte.About 30 seconds passed until after the first addition of boranate there was an evolution of hydrogen, which, however, was then also extremely uniform again. After the boranate supply was switched off, it again took a certain time before the evolution of hydrogen ceased.
Beia-piel 3 Für die Versorgung der negativen Elektrode einer Brennstoffzelleg, die einen zwar gleichmäaeigeng jedoch mengenmäaeig geringen Bedarf an Waäsersfoff hat', wurd:e in Druckgefä's's -eine Schüttung aus Xick618,iiite'rk-ö-r eirn eingebrach-91 die nach Massgäbe «es Wasserstoff--, y - #">. # - p ve:#brauches -(Druck lohtr-olliert)' kontinuierlich mit- Boranatlö-s-un'g versAit wurden..-gierbei vergingen s:owohl bis, -zur. -ersten Gas.entwicklung nach der Zugabe der Boranatlösungals auch-bis.zum Aufhören der Gasentwicklung nach Abstellen der Boranatzufuhr etwa 2 bis 3 Minuten.Example 3 For the supply of the negative electrode of a fuel cell, which has a constant but low volume requirement for water, a bulk of Xick618, iiite'rk-ö-r eirn was brought into pressure vessels Measures «it is hydrogen -, y - #">. # - p ve: # use - (pressure t-olliert) 'were continuously supplied with boranate solution ... -for the first evolution of gas after the addition of the boranate solution as well as up to cessation of the evolution of gas after the boranate supply has been switched off for about 2 to 3 minutes.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA0037969 | 1961-07-26 |
Publications (1)
Publication Number | Publication Date |
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DE1417753A1 true DE1417753A1 (en) | 1968-10-24 |
Family
ID=6930514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19611417753 Pending DE1417753A1 (en) | 1961-07-26 | 1961-07-26 | Process for the catalytic decomposition of boranates, preferably of alkali boranates, with evolution of hydrogen |
Country Status (1)
Country | Link |
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DE (1) | DE1417753A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1067091A2 (en) * | 1999-07-05 | 2001-01-10 | Seijirau Suda | Hydrogen-generating agent and method for generation of hydrogen using the same |
US6683025B2 (en) | 2000-01-07 | 2004-01-27 | Millennium Cell, Inc. | Process for making a hydrogen generation catalyst |
EP1414559A1 (en) * | 2001-07-11 | 2004-05-06 | Millennium Cell Inc. | Differential pressure-driven borohydride based generator |
WO2005005311A2 (en) * | 2003-05-14 | 2005-01-20 | Lynntech, Inc. | Hydrogen generator |
US7083657B2 (en) | 2002-08-20 | 2006-08-01 | Millennium Cell, Inc. | System for hydrogen generation |
-
1961
- 1961-07-26 DE DE19611417753 patent/DE1417753A1/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1067091A2 (en) * | 1999-07-05 | 2001-01-10 | Seijirau Suda | Hydrogen-generating agent and method for generation of hydrogen using the same |
EP1067091A3 (en) * | 1999-07-05 | 2001-11-14 | Seijirau Suda | Hydrogen-generating agent and method for generation of hydrogen using the same |
US6683025B2 (en) | 2000-01-07 | 2004-01-27 | Millennium Cell, Inc. | Process for making a hydrogen generation catalyst |
EP1414559A1 (en) * | 2001-07-11 | 2004-05-06 | Millennium Cell Inc. | Differential pressure-driven borohydride based generator |
EP1414559A4 (en) * | 2001-07-11 | 2008-08-13 | Millennium Cell Inc | Differential pressure-driven borohydride based generator |
US7083657B2 (en) | 2002-08-20 | 2006-08-01 | Millennium Cell, Inc. | System for hydrogen generation |
WO2005005311A2 (en) * | 2003-05-14 | 2005-01-20 | Lynntech, Inc. | Hydrogen generator |
WO2005005311A3 (en) * | 2003-05-14 | 2005-04-21 | Lynntech Inc | Hydrogen generator |
US7641889B1 (en) | 2003-05-14 | 2010-01-05 | Lynntech Power Systems, Ltd. | Hydrogen generator |
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Legal Events
Date | Code | Title | Description |
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SH | Request for examination between 03.10.1968 and 22.04.1971 |