AT106590B - Process for the synthetic production of ammonia from the elements. - Google Patents
Process for the synthetic production of ammonia from the elements.Info
- Publication number
- AT106590B AT106590B AT106590DA AT106590B AT 106590 B AT106590 B AT 106590B AT 106590D A AT106590D A AT 106590DA AT 106590 B AT106590 B AT 106590B
- Authority
- AT
- Austria
- Prior art keywords
- ammonia
- elements
- synthetic production
- sodium
- alkali
- Prior art date
Links
Classifications
-
- 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; Reversible storage of hydrogen
- C01B3/02—Production of hydrogen; Production of gaseous mixtures containing hydrogen
- C01B3/025—Preparation or purification of gas mixtures for ammonia synthesis
-
- 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
- C01C1/0405—Preparation of ammonia by synthesis from N2 and H2 in presence of a 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
- Detergent Compositions (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur synthetischen Herstellung von Ammoniak aus den Elementen.
EMI1.1
z. B. Sauerstoff, Wasserdampf und Kohlenoxyd, in dem zur Synthese benutzten Gasgemische sind und daher nur eine sehr kurze Lebensdauer aufweisen. Man hat daher verschiedentlich versucht, das Gasgemisch vor der Katalyse mittels besonders wirksamer Reinigungsmittel von solchen Verunreinigungen zu befreien, jedoch sind die bisher in Vorschlag gebrachten Mittel nicht hinreichend wirksam, um die Verwendung eines hochaktiven Katalysators im Dauerbetrieb zu gewährleisten.
Es ist z. B. vorgeschlagen worden, das Gasgemisch unmittelbar vor der Katalyse mittels Natrium oder Natriumamid zu reinigen. Beide Substanzen in fester oder flüssiger Form lassen jedoch geringe Mengen von Sauerstoff hindurch, die in verhältnismässig sehr kurzer Zeit die Wirksamkeit des Katalysators beträchtlich herabsetzen. Es ist fernerhin vorgeschlagen worden, das Natriummetall in flüssigem Ammoniak aufzulösen, um durch die feine Verteilung des kolloidal gelösten Natriums eine bessere Wirkung zu erzielen. Auch dieses Mittel genügt jedoch nicht, da infolge des notwendigen Arbeitens bei Zimmertemperatur oder darunter die Reaktionsgeschwindigkeit nicht gross genug ist, um auch Spuren von Sauerstoff von der Grössenanordnung 0.0001 Volumprozent zurückzuhalten.
Es wurde nun gefunden, dass man durch Auflösen eines Alkali-oder Erdalkalimetalles, z. B. Natrium in geschmolzenen Alkaliamiden, z. B. Natriumamid, ein Reinigungsmittel erhält, das allen Anforderungen genügt. In diesem Falle wirkt nämlich nicht nur das kolloidal gelöste Metall, sondern auch das Dispersionsmittel selbst als Reinigungsmittel, und fernerhin hat man die Moghchkeit, das Gasgemisch bei Temperaturen von 200-3000 C durchzuleiten und infolgedessen die Reaktionsfähigkeit sehr beträchtlich zu steigern.
Hiedurch ist es möglich geworden, dieses Gasgemisch so weitgehend zu reinigen, dass die Lebensdauer eines hochaktiven Katalysators fast unbeschränkt wird.
EMI1.2
die beiden Gase Wasserstoff und Stickstoff einzeln für sich vor der Mischung durch das Reinigungsmittel geleitet werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the synthetic production of ammonia from the elements.
EMI1.1
z. B. oxygen, water vapor and carbon oxide, in the gas mixtures used for the synthesis are and therefore only have a very short life. Various attempts have therefore been made to remove such impurities from the gas mixture prior to catalysis by means of particularly effective cleaning agents, but the agents proposed so far are not sufficiently effective to ensure the use of a highly active catalyst in continuous operation.
It is Z. B. has been proposed to purify the gas mixture immediately before catalysis using sodium or sodium amide. However, both substances in solid or liquid form allow small amounts of oxygen to pass through, which in a relatively very short time considerably reduce the effectiveness of the catalyst. It has also been proposed to dissolve the sodium metal in liquid ammonia in order to achieve a better effect through the fine distribution of the colloidally dissolved sodium. However, this means is not sufficient either, since, as a result of the necessary work at room temperature or below, the reaction rate is not great enough to also retain traces of oxygen of the order of magnitude of 0.0001 percent by volume.
It has now been found that by dissolving an alkali or alkaline earth metal, e.g. B. sodium in molten alkali amides, e.g. B. Sodium amide, a cleaning agent that meets all requirements. In this case, not only the colloidally dissolved metal but also the dispersant itself acts as a cleaning agent, and furthermore one has the possibility of passing the gas mixture through at temperatures of 200-3000 C and consequently increasing the reactivity very considerably.
This makes it possible to purify this gas mixture to such an extent that the service life of a highly active catalyst is almost unlimited.
EMI1.2
the two gases hydrogen and nitrogen are passed individually through the cleaning agent before being mixed.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE247226X | 1925-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT106590B true AT106590B (en) | 1927-06-10 |
Family
ID=5935314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT106590D AT106590B (en) | 1925-02-09 | 1926-02-06 | Process for the synthetic production of ammonia from the elements. |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT106590B (en) |
| CH (1) | CH120795A (en) |
| FR (1) | FR610746A (en) |
| GB (1) | GB247226A (en) |
| NL (1) | NL19121C (en) |
-
1926
- 1926-02-05 CH CH120795D patent/CH120795A/en unknown
- 1926-02-06 NL NL32518A patent/NL19121C/en active
- 1926-02-06 AT AT106590D patent/AT106590B/en active
- 1926-02-08 FR FR610746D patent/FR610746A/en not_active Expired
- 1926-02-08 GB GB3566/26A patent/GB247226A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL19121C (en) | 1928-12-15 |
| FR610746A (en) | 1926-09-11 |
| CH120795A (en) | 1927-06-16 |
| GB247226A (en) | 1926-10-14 |
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