DE260992C - - Google Patents
Info
- Publication number
- DE260992C DE260992C DENDAT260992D DE260992DA DE260992C DE 260992 C DE260992 C DE 260992C DE NDAT260992 D DENDAT260992 D DE NDAT260992D DE 260992D A DE260992D A DE 260992DA DE 260992 C DE260992 C DE 260992C
- Authority
- DE
- Germany
- Prior art keywords
- hydrogen
- nitrogen
- ammonia
- catalyst
- gases
- 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.)
- Active
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 150000002483 hydrogen compounds Chemical class 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 150000002830 nitrogen compounds Chemical class 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims 1
- 238000006011 modification reaction Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- -1 Lithium manganese Chemical compound 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 231100000614 Poison Toxicity 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- TWXTWZIUMCFMSG-UHFFFAOYSA-N nitride(3-) Chemical compound [N-3] TWXTWZIUMCFMSG-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
-
- 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
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Es wurde gefunden, daß das Verfahren des Patents 249447 nebst Zusätzen zur Darstellung von Ammoniak in den Fällen, in denen der Katalysator aus zwei oder mehreren Metallen bzw. aus in solche übergehenden Verbindungen oder aus deren Stickstoff- oder Wasserstoffverbindungen besteht und der Katalysator entweder Stickstoff oder Wasserstoff oder beide Gase aufzunehmen vermag, in der Weise abgeändert werden kann, daß man Stickstoff und Wasserstoff nicht gleichzeitig, sondern abwechselnd mit dem Katalysator zusammenbringt. Je nach der Natur des Katalysators, der Temperatur und der anderen Reaktionsbedingungen erhält man hierbei das Ammoniak nur in der Periode der Wasserstoffeinwirkung oder nur in der Periode der Stickstoffeinwirkung oder in beiden. Es kann bei gewöhnlichem oder vorteilhaft unter erhöhtem Druck bzw. mit erhöhten Anfangsdrucken gearbeitet werden. Man wendet zweckmäßig im allgemeinen Temperaturen unter 600° an, wobei es mitunter vorteilhaft ist, nicht die gleiche Temperatur, für beide Perioden anzuwenden.It has been found that the method of patent 249447, along with additives for representation of ammonia in cases where the catalyst consists of two or more metals or from compounds transitioning into such or from their nitrogen or hydrogen compounds exists and the catalyst is capable of absorbing either nitrogen or hydrogen or both gases, modified in the manner It can be said that nitrogen and hydrogen are not used at the same time, but alternately brings together with the catalyst. Depending on the nature of the catalyst, the temperature and the other reaction conditions give the ammonia only in the period of hydrogen exposure or only in the period of nitrogen exposure or in both. It can work at normal or advantageously under increased pressure or with increased initial pressures will. It is expedient in general to use temperatures below 600 °, wherein it is sometimes advantageous not to use the same temperature for both periods.
Es können ferner gleichzeitig weitere der in dem Hauptpatent und den Zusätzen genannten, die Reaktion befördernden Substanzen anwesend sein. Sofern die verwendeten Katalysatoren gegen Feuchtigkeit und Sauerstoff empfindlich sind, hat man auch hier für deren Fernhaltung zu sorgen, ebenso hat man die Gegenwart von Kontaktgiften auszuschließen. Es ist zwar bekannt, Ammoniak in der Weise darzustellen, daß man von titanisiertem Eisenschwamm Stickstoff aufsaugen läßt, der dann durch Überleiten von Wasserstoff unter Ammoniakbildung aus dem Eisenschwamm wieder herausgenommen wird. Weiter hat man auch schon abwechselnd Wasserstoff und Stickstoff über ein Metall (Calcium) als Katalysator zwecks Ammoniakbildung geleitet. Nach den Angaben Habers und van Oordts (Zeitschr. f. anorg. Chemie 44, 341 ff., bes. 357, 370, 377), ist dies Verfahren aber technisch wertlos im Gegensatz zu dem vorliegenden Verfahren.Furthermore, other of the items mentioned in the main patent and the additions can be used at the same time, substances promoting the reaction must be present. Provided the catalysts used If you are sensitive to moisture and oxygen, you have to ensure that they are kept away here, as well as you have them Exclude the presence of contact poisons. Although it is known to have ammonia in the A way to show that titanized sponge iron is allowed to soak up nitrogen, which is then carried out by passing hydrogen over from the sponge iron to form ammonia is taken out again. You also have alternating hydrogen and nitrogen passed over a metal (calcium) as a catalyst for the purpose of ammonia formation. After the Information from Habers and van Oordts (Zeitschr. F. Anorg. Chemie 44, 341 ff., Esp. 357, 370, 377), However, this process is technically worthless in contrast to the present process.
Über Lithium-Mangan-Nitrid wird bei 450 bis 550° abwechselnd unter einem Anfangsdruck von je 50 Atm. ein Strom von trocke- nem, reinem Wasserstoff und Stickstoff geleitet. Die den Kontaktofen verlassenden Gase haben dauernd einen hohen Gehalt an Ammoniak.Lithium manganese nitride is used at 450 to 550 ° alternately under an initial pressure of 50 atm. a stream of dry pure hydrogen and nitrogen. Those leaving the contact furnace Gases always have a high ammonia content.
An Stelle der genannten Mischung kann man andere der eingangs erwähnten Kombi-Instead of the mixture mentioned, other of the combinations mentioned at the beginning can be used
*) Frühere Zusatzpatente: 254437 und 258146.*) Earlier additional patents: 254437 and 258146.
nationen verwenden, ζ. Β. Nickel-Molybdän, Barium-Chrom usw.use nations, ζ. Β. Nickel-molybdenum, barium-chromium, etc.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE260992C true DE260992C (en) |
Family
ID=518584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT260992D Active DE260992C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE260992C (en) |
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0
- DE DENDAT260992D patent/DE260992C/de active Active
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