DE565155C - Process for the synthetic production of ammonia from its elements - Google Patents

Process for the synthetic production of ammonia from its elements

Info

Publication number
DE565155C
DE565155C DET37367D DET0037367D DE565155C DE 565155 C DE565155 C DE 565155C DE T37367 D DET37367 D DE T37367D DE T0037367 D DET0037367 D DE T0037367D DE 565155 C DE565155 C DE 565155C
Authority
DE
Germany
Prior art keywords
ammonia
synthetic production
elements
catalyst
aluminum
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
DET37367D
Other languages
German (de)
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.)
ERNST TERRES DR ING
Original Assignee
ERNST TERRES DR ING
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 ERNST TERRES DR ING filed Critical ERNST TERRES DR ING
Priority to DET37367D priority Critical patent/DE565155C/en
Application granted granted Critical
Publication of DE565155C publication Critical patent/DE565155C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/04—Preparation of ammonia by synthesis in the gas phase
    • C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
    • C01C1/0411—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the catalyst
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Catalysts (AREA)

Description

Verfahren zur synthetischen Herstellung von Ammoniak aus seinen Elementen In dem Hauptpatent 56q.112 ist ein Verfahren zur synthetischen Herstellung von Ammoniak aus seinen Elementen beschrieben worden, bei dem als Katalysator ein durch Erhitzen einer Eisencyanwasserstoffsäure oder eines einfachen Ammoniumsalzes dieser Säuren gewonnenes Zersetzungsprodukt verwendet wird. Die so hergestellten Zersetzungsprodukte werden zur Gewinnung sehr wirksamer und sehr dauerhafter Katalysatoren gemäß einer besonderen Ausführungsform des durch das Hauptpatent geschützten Verfahrens einer Hydrierung unterworfen, und aus der hydrierten Masse wird sodann das bei der Hydrierung entstandene metallische Eisen mittels verdünnter Säuren herausgelöst.Process for the synthetic production of ammonia from its elements In the main patent 56q.112 is a process for the synthetic production of ammonia from its elements has been described in which a catalyst by heating an iron cyanide acid or a simple ammonium salt of these acids recovered decomposition product is used. The decomposition products thus produced are to obtain very effective and very durable catalysts according to a special embodiment of the process protected by the main patent Subjected to hydrogenation, and the hydrogenated mass then becomes that upon hydrogenation the resulting metallic iron dissolved out by means of dilute acids.

Es ist nun weiter gefunden worden, daß sich sehr wirksame und äußerst dauerhafte Katalysatoren auch gewinnen lassen, wenn man ein beliebiges anderes Alkalisalz einer Eisen- Beispiel Bei 450 = undAtmosphärendruckwurde ein Ge- Wasserstoff mit einer Geschwindigkeit von misch von i Volumen Stickstoff und 3 Volumen o,9 ccm/Sek. über den Katalysator geleitet. Katalvsator VolumprozentNH3 °,'o des Gleich- Mittelwerte in den im Reaktionsas gewichts Hydriertes und mit Säure 0,1207 48,3 ersten 12 Stunden behandeltes Produkt 0'124 49,6 zweiten 12 - 0,1237 49,5 weiteren 24 - cyanwasserstoffsäure thermisch zersetzt und die erhaltenen Zersetzungsprodukte nach Hydrierung mit verdünnten Säuren behandelt. Derartige Alkalisalze sind z. B. Triammoniumkaliumferrocyanid (N H4) 3 K Fe (C N )b, Ferrokaliumferrocyanid K,Fe2(CN)s, Kaliumferriferrocyanid KFe2(CN)bH20 u. a. m. Werden derartige Alkalisalze einer Eisencyanwasserstoffsäure durch Erhitzen in einer indifferenten Gasatmosphäre zersetzt und die Zersetzungsprodukte hydriert, z. B. durch Einwirkung von Wasserstoff bei Temperaturen oberhalb 400' C, so erhält man einen Hydrierüngsrückstand, der metallisches Eisen enthält. Wird nun aus diesem Hydrierungsrückstand das metallische Eisen mittels verdünnter Säuren, z. B. verdünnter Essigsäure, herausgelöst, so bleiben Massen zurück, die sich bei der Ammoniaksynthese durch eine große katalytische Wirksamkeit und eine fast unbegrenzte Haltbarkeit auszeichnen. Die Wirksamkeit dieser Katalysatoren läßt sich durch Zurhischung von metällischem Aluminium, Aluminiumcarbid oder Aluminiumnitrid einzeln oder in Mischungmiteinander wesentlich erhöhen. = - Beispiel Katalysator Volumprozent N H:" °/o des Gleich- Mittelwerte in den im Reaktionsgas gewichts Hydriertes und mit Säure 0,2207 88,3 ersten 12 Stunden behandeltes Produkt 0,2227 8g,= zweiten =2 - -f- Aluminiumpulver 012217 88,7 dritten 1z - It has now been found that very effective and extremely durable catalysts can also be obtained if any other alkali salt of an iron example At 450 = and atmospheric pressure, a Ge became hydrogen at a rate of mix of 1 volume of nitrogen and 3 volumes of 0.9 ccm / sec. passed over the catalyst. Catalyst Volume percentNH3 °, 'o of the equivalence mean values in the in the reaction gas weight Hydrogenated and with acid 0.1207 48.3 first 12 hours treated product 0,124 49.6 second 12 - 0.1237 49.5 another 24 - Hydrocyanic acid is thermally decomposed and the decomposition products obtained are treated with dilute acids after hydrogenation. Such alkali salts are, for. B. triammonium potassium ferrocyanide (N H4) 3 K Fe (CN) b, ferropotassium ferrocyanide K, Fe2 (CN) s, potassium ferriferrocyanide KFe2 (CN) bH20 and many others. B. by the action of hydrogen at temperatures above 400 ° C., a hydrogenation residue is obtained which contains metallic iron. If the metallic iron is now made of this hydrogenation residue by means of dilute acids, e.g. B. dilute acetic acid, dissolved out, so remain masses that are characterized by a great catalytic effectiveness and an almost unlimited shelf life in the ammonia synthesis. The effectiveness of these catalysts can be significantly increased by adding metallic aluminum, aluminum carbide or aluminum nitride, either individually or as a mixture with one another. = - example catalyst Percentage by volume NH: "° / o of the equal mean values in the weight in the reaction gas Hydrogenated and with acid 0.2207 88.3 first 12 hours treated product 0.2227 8g, = second = 2 - -f- aluminum powder 012217 88.7 third 1z -

Claims (1)

PATENTANSPRÜCHE: r. Verfahren zur synthetischen Herstellung von Ammoniak aus seinen Elementen nach Patent 564 112 unter Verwendung einer Katalysatormasse, die durch Erhitzung eines Alkalisalzes (ausgenommen eines einfachen Ammoniumsalzes) einer Eisencyanwasserstoffsäure in einer indifferenten Atmosphäre und nachfolgende Einwirkung von Wasserstoff auf das Zersetzungsprodukt gewonnen worden ist, dadurch gekennzeichnet, daß das Zersetzungsprodukt einer Nachbehandlung reit verdünnten Säuren unterworfen wird. 2-. Verfahren nach Anspruch z, dadurch gekennzeichnet, daß dem Katalysator metallisches Aluminium; Aluminiumcarbid oder Aluminiumnitrid, einzeln oder in 14Tischung miteinander, zugesetzt wird.PATENT CLAIMS: r. Process for the synthetic production of ammonia from its elements according to patent 564 112 using a catalyst mass, obtained by heating an alkali salt (with the exception of a simple ammonium salt) an iron cyanide acid in an inert atmosphere and subsequent Exposure to hydrogen on the decomposition product has been obtained thereby characterized in that the decomposition product of an aftertreatment is diluted Is subjected to acids. 2-. Method according to claim z, characterized in that that the catalyst is metallic aluminum; Aluminum carbide or aluminum nitride, individually or in admixture with one another.
DET37367D 1929-08-04 1929-08-04 Process for the synthetic production of ammonia from its elements Expired DE565155C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET37367D DE565155C (en) 1929-08-04 1929-08-04 Process for the synthetic production of ammonia from its elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET37367D DE565155C (en) 1929-08-04 1929-08-04 Process for the synthetic production of ammonia from its elements

Publications (1)

Publication Number Publication Date
DE565155C true DE565155C (en) 1932-11-26

Family

ID=7559925

Family Applications (1)

Application Number Title Priority Date Filing Date
DET37367D Expired DE565155C (en) 1929-08-04 1929-08-04 Process for the synthetic production of ammonia from its elements

Country Status (1)

Country Link
DE (1) DE565155C (en)

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