DE102008028143A1 - Catalytic production of hydrogen, useful as supplement fuel for fossil fuels, comprises heating metallic catalyst under oxygen atmosphere, introducing the catalyst into an aqueous solution and exposing the catalyst to light source - Google Patents

Catalytic production of hydrogen, useful as supplement fuel for fossil fuels, comprises heating metallic catalyst under oxygen atmosphere, introducing the catalyst into an aqueous solution and exposing the catalyst to light source Download PDF

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DE102008028143A1
DE102008028143A1 DE102008028143A DE102008028143A DE102008028143A1 DE 102008028143 A1 DE102008028143 A1 DE 102008028143A1 DE 102008028143 A DE102008028143 A DE 102008028143A DE 102008028143 A DE102008028143 A DE 102008028143A DE 102008028143 A1 DE102008028143 A1 DE 102008028143A1
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catalyst
aqueous solution
hydrogen
metal catalyst
light source
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Christoph Koppe
Jan Koppe
Holger Jentsch
Jürgen Dr. Koppe
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Mol Katalysatortechnik GmbH
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    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/889—Manganese, technetium or rhenium
    • B01J23/8898—Manganese, technetium or rhenium containing also molybdenum
    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/85—Chromium, molybdenum or tungsten
    • B01J23/88—Molybdenum
    • 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
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
    • B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
    • B01J23/889—Manganese, technetium or rhenium
    • B01J23/8892—Manganese
    • 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
    • C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
    • C01B3/042—Decomposition of water
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/11—Making amorphous alloys
    • 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
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • H01M8/04216—Reactant storage and supply, e.g. means for feeding, pipes characterised by the choice for a specific material, e.g. carbon, hydride, absorbent
    • 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
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
    • H01M8/065—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by dissolution of metals or alloys; by dehydriding metallic substances
    • 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

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Abstract

Catalytic production of hydrogen from an aqueous solution using a light source, comprises thermally treating a metallic catalyst for a period of 5-60 minutes at 500-1000[deg] C under an oxygen atmosphere, introducing the catalyst into the aqueous solution, exposing the catalyst to the light source and discharging the hydrogen containing gas existing above the aqueous solution from this water free area. An independent claim is included for the complete metal catalyst for the production of hydrogen from an aqueous solution using a light source, comprising (in wt.%) chromium (15-35); iron and nickel (minimum 60) and other elements (manganese, molybdenum, copper and silicon) (not more than 10).

Description

Die Erfindung betrifft ein Verfahren zur katalytischen Herstellung von Wasserstoff.The The invention relates to a process for the catalytic production of Hydrogen.

Es ist allgemein bekannt, durch eine Kombination aus einer Solarzelle, in welcher ein elektrischer Strom erzeugt wird, und einer Elektrolysezelle, in welcher mittels diesen elektrischen Stromes Wasser in Wasserstoff und Sauerstoff zerlegt wird, Wasserstoff und Sauerstoff zu erzeugen, welche dann gespeichert und bei Bedarf in einer Brennstoffzelle erneut in elektrische Energie umgewandelt werden können. Dieses Gemisch aus Wasserstoff und Sauerstoff – das so genannte Knallgas – ist hochexplosiv. Der Umgang mit diesem Gemisch stellt hohe sicherheitstechnische Anforderungen. Darüber hinaus ist der technische Aufwand erheblich.It is generally known, by a combination of a solar cell, in which an electric current is generated, and an electrolysis cell, in which by means of this electric current water in hydrogen and oxygen is decomposed to produce hydrogen and oxygen, which then stored and if necessary in a fuel cell can be converted again into electrical energy. This mixture of hydrogen and oxygen - the like called detonating gas - is highly explosive. Dealing with this Mixture places high safety requirements. About that In addition, the technical complexity is considerable.

Es ist weiterhin allgemein bekannt, dass biologische Strukturen unter Nutzung der Sonnenenergie direkt aus Wasser Wasserstoff bilden können. Diese Prozesse sind seit langem bekannt und in der Fachliteratur hinreichend beschrieben. Der Einsatz biologischer Systeme zur Erzeugung von Wasserstoff aus Wasser unter Nutzung des Sonnenlichtes für die technische Herstellung von Wasserstoff ist dadurch erschwert, dass der Wasserstoff hierbei nicht als Wasserstoffgas austritt, sondern an bestimmte organische Strukturen gebunden vorliegt. Ein weiterer Nachteil besteht darin, dass diese organischen Strukturen gegenüber medialen Einflüssen nicht hinreichend stabil sind.It is still well known that biological structures under Use of solar energy directly from water can form hydrogen. These Processes have long been known and sufficient in the literature described. The use of biological systems for the production of Hydrogen from water using sunlight for the technical production of hydrogen is made more difficult, that the hydrogen does not escape as hydrogen gas, but is bound to specific organic structures. One Another disadvantage is that these organic structures not sufficient for medial influences are stable.

Die DE 35 35 395 betrifft die Erzeugung von Wasserstoffgas aus heißem Wasser mittels eines Metallkatalysators, wie Nickelpulver, und einem chelatbildenden Mittel wie EDTA. Die Temperatur des Wassers beträgt etwa 60 bis 150°C und liegt vorzugsweise nicht oberhalb des Siedepunktes des Wassers. Das Wasser wird vorzugsweise durch Abwärme erhitzt und der Wasserstoff wird als Ergänzungsbrennstoff für fossile Brennstoffe, wie Gas, Öl oder Kohle, verwendet.The DE 35 35 395 relates to the production of hydrogen gas from hot water by means of a metal catalyst, such as nickel powder, and a chelating agent, such as EDTA. The temperature of the water is about 60 to 150 ° C and is preferably not above the boiling point of the water. The water is preferably heated by waste heat and the hydrogen is used as a supplemental fuel for fossil fuels, such as gas, oil or coal.

In der DE 693 14 631 T2 wird ein Verfahren zur Entwicklung von Wasserstoff an Bord eines Fahrzeuges durch Leiten von H2O in Kontakt mit gemahlenem oder gebrochenem Eisen beschrieben, wobei das Eisen in-situ gemahlen oder gebrochen wird, um seine Aktivität zu steigern und in einer Reaktion mit dem H2O innerhalb eines Betriebszyklus nach dem Mahlen oder Brechen verwendet wird, wobei das Verfahren folgende Verfahrensschritte umfasst:

  • – Vorsehen von Eisen als ein Fließbett aus Eisenpartikeln und einer Quelle für H2O in Kombination mit einer Wasserstoff-Luft-Brennstoffzelle,
  • – Entwickeln von Wasserstoff für die Wasserstoff-Luft-Brennstoffzelle, indem das Eisen bei einer maximalen Temperatur von 450°C mit dem H2O reagieren gelassen wird,
  • – Mahlen oder Brechen des Eisens in Stückform, um aktive Eisenpartikel zu erzeugen, deren Reaktionsvermögen gesteigert ist, um im vorangegangenen Verfahrensschritt Wasserstoff in einer Menge von wenigstens 2%/min. bei einer maximalen Temperatur von 450°C zu entwickeln.
In the DE 693 14 631 T2 For example, there is described a method of developing hydrogen on board a vehicle by passing H 2 O in contact with crushed or crushed iron, wherein the iron is ground or fractured in-situ to increase its activity and in a reaction with the H 2 O is used within a cycle of operation after milling or crushing, the method comprising the following steps:
  • Providing iron as a fluidized bed of iron particles and a source of H 2 O in combination with a hydrogen-air fuel cell,
  • Developing hydrogen for the hydrogen-air fuel cell by reacting the iron with the H 2 O at a maximum temperature of 450 ° C,
  • - grinding or breaking the iron into pieces to produce active iron particles whose reactivity is increased to hydrogen in the preceding step in an amount of at least 2% / min. to develop at a maximum temperature of 450 ° C.

Ziel des Erfindungsgegenstandes ist es, ein Verfahren zur katalytischen Herstellung von Wasserstoff bereitzustellen, das technisch sehr robust ist und einfach arbeitet.aim the subject of the invention is a process for catalytic To provide hydrogen production, which is technically very is robust and easy to work with.

Darüber hinaus soll ein Vollmetallkatalysator vorgeschlagen werden, der zur katalytischen Herstellung von Wasserstoff geeignet ist.About that In addition, a full metal catalyst is to be proposed, the suitable for the catalytic production of hydrogen.

Dieses Ziel wird erreicht durch ein Verfahren zur katalytischen Herstellung von Wasserstoff aus einer wässrigen Lösung in Wirkverbindung mit einer Lichtquelle, indem ein metallischer Katalysator für eine Zeit von 5 bis 60 Minuten bei einer Temperatur von 500 bis 1000°C unter sauerstoffhaltiger Atmosphäre thermisch behandelt wird, dieser Katalysator in die wässrige Lösung eingebracht wird, der Katalysator der Lichtquelle ausgesetzt und das hierbei entstehende und sich oberhalb der wässrigen Lösung sammelnde wasserstoffhaltige Gas aus diesem wasserfreien Raum abgeführt wird.This Goal is achieved by a process for catalytic production of hydrogen from an aqueous solution in Active compound with a light source by a metallic catalyst for a period of 5 to 60 minutes at a temperature of 500 to 1000 ° C under oxygen-containing atmosphere is thermally treated, this catalyst in the aqueous Solution is introduced, the catalyst of the light source exposed and the resulting and above the aqueous Solution-collecting hydrogen-containing gas from this anhydrous Room is discharged.

Vorteilhafte Weiterbildungen des erfindungsgemäßen Verfahrens sind den zugehörigen verfahrensgemäßen Unteransprüchen zu entnehmen.advantageous Further developments of the method according to the invention are the associated Verfahrensgemäßen Subclaims refer.

Dieses Ziel wird auch erreicht durch einen Vollmetallkatalysator für die Herstellung von Wasserstoff aus einer wässrigen Lösung in Wirkverbindung mit einer Lichtquelle, der folgende chemische Zusammensetzung (in Gew.-%) aufweist: Cr 15–35% Fe + Ni min. 60% wobei der Gewichtsanteil an Begleitelementen, insbesondere Mn, Mo, Cu, Si 10% nicht überschreitet.This object is also achieved by a full metal catalyst for the production of hydrogen from an aqueous solution in operative connection with a light source having the following chemical composition (in% by weight): Cr 15-35% Fe + Ni minute 60% wherein the proportion by weight of accompanying elements, in particular Mn, Mo, Cu, Si does not exceed 10%.

Vorteilhafte Weiterbildungen des erfindungsgemäßen Vollmetallkatalysators sind den zugehörigen gegenständlichen Unteransprüchen zu entnehmen.advantageous Further developments of the full metal catalyst according to the invention are the associated subject subclaims refer to.

Wasser ist das verbreiteteste Lösungsmittel, das als wässrige Lösung bekannt ist. Hier ist neben Trinkwasser auch Salzwasser angesprochen.water is the most common solvent that is considered aqueous Solution is known. Here is next to drinking water and salt water addressed.

Darüber hinaus sind jedoch auch Säuren und Basen als wässrige Lösungen anzusehen und für den Erfindungsgegenstand verwendbar.About that In addition, however, acids and bases are also aqueous To look at solutions and for the subject invention usable.

Begleitelemente können einzeln oder in Kombination in der Legierung (in Gew.-%) wie folgt enthalten sein: Mn bis zu 2% Mo bis zu 7% Cu bis zu 2% Si bis zu 1%. Accompanying elements can be single or in Combination in the alloy (in% by weight) may be included as follows: Mn up to 2% Not a word up to 7% Cu up to 2% Si up to 1%.

Die metallischen Bauteile werden vorteilhafter Weise durch Folien vorgebbarer Materialstärke, beispielsweise 0,01 bis 1,0 mm gebildet. Diese Vollmetallkatalysatorfolien werden in die in einem entsprechenden Behältnis vorgesehene wässrige Lösung eingebracht und einer Lichtquelle ausgesetzt. Die preiswerteste Lichtquelle ist hierbei das Sonnenlicht. Kostspieliger sind elektrisch betätigbare Leuchtmittel, da hier der elektrische Strom in die Energiebilanz mit einzubeziehen ist.The metallic components are advantageously specifiable by films Material thickness, formed for example 0.01 to 1.0 mm. These all-metal catalyst foils are in the in a corresponding Container provided aqueous solution introduced and exposed to a light source. The cheapest The light source here is sunlight. More expensive are electric operable bulbs, because here the electric current to be included in the energy balance.

Im Folgenden wird eine beispielhafte Legierung angegeben, die in Form von Folien zur Herstellung des erfindungsgemäßen Vollmetallkatalysators verwendet werden kann: Ni 31% Cr 27% Fe Rest. The following is an exemplary alloy which can be used in the form of films for the production of the full metal catalyst according to the invention: Ni 31% Cr 27% Fe Rest.

An Begleitelementen sollen in dieser beispielhaften Legierung einzeln oder in Kombination folgende Elemente (in Gew.-%) enthalten sein: Mn 1,5% Cu 1,5% Mo 6% Si 0,3%. Accompanying elements in this exemplary alloy are to contain, individually or in combination, the following elements (in% by weight): Mn 1.5% Cu 1.5% Not a word 6% Si 0.3%.

Für einen Versuch wurden Metallfolien der Stärke 0,02 mm aus der obigen Legierung eingesetzt. Die Metallfolien wurden für 8 Minuten in einem Muffelofen bei 800°C unter sauerstoffhaltiger Atmosphäre einer thermischen Behandlung unterzogen. 4 cm2 bzw. 0,282 g dieser Katalysatorfolie wurden anschließend in ein 100 ml Becherglas eingesetzt. Hierzu wurden 65 g Trinkwasser gegeben und das den Vollmetallkatalysator enthaltende Becherglas dem Sonnenlicht ausgesetzt. An der Katalysatorfolie setzte eine sichtbare Bildung von Gasbläschen ein.For a test metal foils of 0.02 mm thickness made of the above alloy were used. The metal foils were subjected to a thermal treatment for 8 minutes in a muffle furnace at 800 ° C under an oxygen-containing atmosphere. 4 cm 2 or 0.282 g of this catalyst film were then inserted into a 100 ml beaker. For this purpose, 65 g of drinking water were added and the glass beaker containing the solid metal catalyst was exposed to sunlight. On the catalyst film began a visible formation of gas bubbles.

Innerhalb von 24 Stunden wurden in einem oberhalb der wässrigen Lösung vorgesehenen Gasraum 0,32 g Wasserdampf und 0,16 g eines wasserstoffhaltigen Gases ermittelt. Nach insgesamt 72 Stunden waren 0,96 g Wasserdampf und 0,33 g des wasserstoffhaltigen Gases im Gasraum gegeben. Damit wurden mehr als 10 mW Lichtenergie pro cm2 Katalysatoroberfläche in chemische Energie in Form von Wasserstoff umgewandelt.Within 24 hours, 0.32 g of water vapor and 0.16 g of a hydrogen-containing gas were determined in a gas space provided above the aqueous solution. After a total of 72 hours 0.96 g of water vapor and 0.33 g of the hydrogen-containing gas in the gas space were given. Thus, more than 10 mW of light energy per cm 2 of catalyst surface was converted into chemical energy in the form of hydrogen.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DE 3535395 [0004] - DE 3535395 [0004]
  • - DE 69314631 T2 [0005] - DE 69314631 T2 [0005]

Claims (10)

Verfahren zur katalytischen Herstellung von Wasserstoff aus einer wässrigen Lösung in Wirkverbindung mit einer Lichtquelle, indem ein metallischer Katalysator für eine Zeit von 5 bis 60 Minuten bei einer Temperatur von 500 bis 1000°C unter sauerstoffhaltiger Atmosphäre thermisch behandelt wird, dieser Katalysator in die wässrige Lösung eingebracht wird, der Katalysator der Lichtquelle ausgesetzt und das hierbei entstehende und sich oberhalb der wässrigen Lösung sammelnde wasserstoffhaltige Gas aus diesem wasserfreien Raum abgeführt wird.Process for the catalytic production of hydrogen from an aqueous solution in operative association with a light source by using a metallic catalyst for a time of 5 to 60 minutes at a temperature of 500 to 1000 ° C under oxygen-containing atmosphere thermally is treated, this catalyst in the aqueous solution is introduced, the catalyst exposed to the light source and the resulting and above the aqueous solution collecting hydrogenous gas discharged from this anhydrous space becomes. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass ein Vollmetallkatalysator folgender chemischer Zusammensetzung (in Gew.-% in die wässrige Lösung eingebracht wird: Cr 15–35% Fe + Ni min. 60%
wobei der Gewichtsanteil an Begleitelementen, insbesondere Mn, Mo, Cu, Si, 10% nicht überschreitet.A method according to claim 1, characterized in that a solid metal catalyst of the following chemical composition (in wt .-% is introduced into the aqueous solution: Cr 15-35% Fe + Ni minute 60%
wherein the proportion by weight of accompanying elements, in particular Mn, Mo, Cu, Si, does not exceed 10%. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass als Vollmetallkatalysator eine Folie der Stärke 0,01 bis 1,0 mm eingesetzt wird.Method according to claim 1 or 2, characterized that as a full metal catalyst, a film of the thickness of 0.01 up to 1.0 mm is used. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Vollmetallkatalysator vor Einbringung in die wässrige Lösung gereinigt wird.Method according to one of claims 1 to 3, characterized in that the full metal catalyst prior to introduction is purified in the aqueous solution. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Vollmetallkatalysator in einem Muffelofen in einer Zeit von 5 bis 40 Minuten bei einer Temperatur von 550 bis 950°C unter sauerstoffhaltiger Atmosphäre thermisch behandelt wird.Method according to one of claims 1 to 4, characterized in that the solid metal catalyst in a Muffle furnace in a time of 5 to 40 minutes at a temperature from 550 to 950 ° C under oxygen-containing atmosphere is thermally treated. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Vollmetallkatalysator in Trinkwasser eingebracht und dem Sonnenlicht ausgesetzt wird.Method according to one of claims 1 to 5, characterized in that the full metal catalyst in drinking water is introduced and exposed to sunlight. Vollmetallkatalysator für die Herstellung von Wasserstoff aus einer wässrigen Lösung in Wirkverbindung mit einer Lichtquelle, der folgende chemische Zusammensetzung (in Gew.-%) aufweist: Cr 15–35% Fe + Ni min. 60%
wobei der Gewichtsanteil an Begleitelementen, insbesondere Mn, Mo, Cu, Si, 10% nicht überschreitet.A full metal catalyst for the production of hydrogen from an aqueous solution in operative association with a light source having the following chemical composition (in% by weight): Cr 15-35% Fe + Ni minute 60%
wherein the proportion by weight of accompanying elements, in particular Mn, Mo, Cu, Si, does not exceed 10%. Vollmetallkatalysator nach Anspruch 7, der an Begleitelementen einzeln oder in Kombination (in Gew.-%) folgende Elemente aufweist: Mn bis zu 2% Mo bis zu 7% Cu bis zu 2% Si bis zu 1%.
The all-metal catalyst according to claim 7, comprising the following elements individually or in combination (in% by weight) of accompanying elements: Mn up to 2% Not a word up to 7% Cu up to 2% Si up to 1%.
Vollmetallkatalysator nach Anspruch 7 oder 8, der in Form einer Folie vorliegt.A full metal catalyst according to claim 7 or 8, which in the form of a film. Vollmetallkatalysator nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Folie eine Materialstärke zwischen 0,01 und 1,0 mm aufweist.Full metal catalyst according to one of the claims 7 to 9, characterized in that the film has a material thickness between 0.01 and 1.0 mm.
DE102008028143A 2008-06-13 2008-06-13 Catalytic production of hydrogen, useful as supplement fuel for fossil fuels, comprises heating metallic catalyst under oxygen atmosphere, introducing the catalyst into an aqueous solution and exposing the catalyst to light source Withdrawn DE102008028143A1 (en)

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DE102008036369B4 (en) 2008-08-05 2017-03-30 Mol Katalysatortechnik Gmbh Method for eliminating biofilms

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE3535395A1 (en) 1985-03-08 1986-09-11 Earl V. Austin Tex. Cardinal Process for producing hydrogen
DE69314631T2 (en) 1992-04-24 1998-04-30 H Power Corp HYDROGEN DEVELOPMENT SYSTEM

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
DE3535395A1 (en) 1985-03-08 1986-09-11 Earl V. Austin Tex. Cardinal Process for producing hydrogen
DE69314631T2 (en) 1992-04-24 1998-04-30 H Power Corp HYDROGEN DEVELOPMENT SYSTEM

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008036369B4 (en) 2008-08-05 2017-03-30 Mol Katalysatortechnik Gmbh Method for eliminating biofilms

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