DE247852C - - Google Patents
Info
- Publication number
- DE247852C DE247852C DENDAT247852D DE247852DA DE247852C DE 247852 C DE247852 C DE 247852C DE NDAT247852 D DENDAT247852 D DE NDAT247852D DE 247852D A DE247852D A DE 247852DA DE 247852 C DE247852 C DE 247852C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- iron oxide
- expediently
- pure
- pure iron
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 229910000460 iron oxide Inorganic materials 0.000 claims description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- ILMFDGFXPJCFQW-UHFFFAOYSA-N azanide;azanidylideneiron;iron Chemical compound [NH2-].[Fe].[Fe].[Fe].[Fe].[Fe].[Fe]=[N-] ILMFDGFXPJCFQW-UHFFFAOYSA-N 0.000 claims description 2
- 230000003197 catalytic Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229910001337 iron nitride Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 241001116498 Taxus baccata Species 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- TWXTWZIUMCFMSG-UHFFFAOYSA-N nitride(3-) Chemical compound [N-3] TWXTWZIUMCFMSG-UHFFFAOYSA-N 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 235000013980 iron oxide Nutrition 0.000 description 7
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000209149 Zea Species 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- SHHIADHOJKLUIZ-UHFFFAOYSA-N azane;molecular hydrogen Chemical compound N.[H][H] SHHIADHOJKLUIZ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 235000005824 corn Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 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
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
-JVl 247852 -KLASSE 12 k, GRUPPE 3. -JVl 247852 - CLASS 12 k, GROUP 3.
Haber und Le Rossignol beschreiben die katalytische Darstellung von Ammoniak aus den Elementen mittels Eisen als Kontaktsubstanz. Sie gehen hierbei von reinstem käuflichem Eisenoxyd aus, welches sie entweder bei sehr hoher Temperatur, nämlich beiiooo0, mit Wasserstoff reduzieren (Ber. 1907, S. 2147), oder über welches sie direkt bei 9000 das Stickstoff-Wasserstoffgemisch leiten (Zeitschr. f.Haber and Le Rossignol describe the catalytic production of ammonia from the elements using iron as a contact substance. They start from the purest commercially available iron oxide, which they either reduce with hydrogen at a very high temperature, namely at 100 0 (Ber. 1907, p. 2147), or via which they pass the nitrogen-hydrogen mixture directly at 900 0 (Zeitschr. f.
Elektrochemie 1908, S. 190). Die Ausbeuten an Ammoniak sind mit dem auf diese Weise erhaltenen reinsten Eisen äußerst gering.Elektrochemie 1908, p. 190). The yields ammonia are extremely small with the purest iron obtained in this way.
Es wurde nun die überraschende Beobachtung gemacht, daß eine bedeutend bessere Wirkung erzielt, d. h. daß eine wesentliche Beschleunigung der Ammoniakbildung schon bei relativ niedrigen, erheblich unterhalb 900 ° liegenden Temperaturen erreicht wird, wenn man die Herstellung des für die Katalyse be-The surprising observation has now been made that a considerably better one Effect achieved, d. H. that a substantial acceleration of the ammonia formation already is reached at relatively low temperatures well below 900 ° if the production of the material used for catalysis
stimmten Katalysators aus dem Oxyd oder sonstigen Verbindungen des Eisens bei relativ niedrigen Temperaturen, zweckmäßig nicht über 6oo°, vornimmt und dafür sorgt, daß dasselbe auch während der Katalyse niemalsagreed catalyst from the oxide or other compounds of iron at relative low temperatures, expediently not above 600 °, and ensures that never the same even during catalysis
as über diese Temperatur erhitzt wird. Die Reduktion geschieht zweckmäßig mit Wasserstoff, doch kann sie auch auf 'andere Weise, z. B. mit Ammoniak, bewirkt werden; in letzterem Fall erhält man an Stelle von reinem Metall Eisennitrid.as is heated above this temperature. The reduction is conveniently done with hydrogen, but it can also be done in other ways, e.g. B. with ammonia; in the latter case one obtains instead of pure metal Iron nitride.
Man kann auch in der Weise verfahren, daß man das reine Eisenoxyd, Eisenoxyduloxyd usw. in den Kontaktraum einfüllt und das Gasgemisch von vornherein unterhalb der genannten Temperatur überleitet.You can also proceed in such a way that the pure iron oxide, iron oxide etc. fills into the contact space and the gas mixture from the outset below the named temperature.
Besonders wirksames Material erhält man, wenn man von einem Eisenoxyd bzw. Eisenoxyduloxyd ausgeht, welches in der Weise hefgestellt ist, daß man reines Eisen oder reine Eisenoxyde zunächst in Gegenwart von Sauerstoff oder im Falle der Verwendung von Eisenoxyden auch bei dessen Abwesenheit auf hohe Temperaturen, zweckmäßig zum Schmelzen erhitzt. Unter Umständen ist es vorteilhaft, das aus diesen Oxyden erhaltene Eisen nochmais oder mehrfach der Oxydation und Reduktion zu unterwerfen, wobei die niedrige Temperatur lediglich bei der letzten Reduktion innegehalten werden muß.Particularly effective material is obtained if one uses an iron oxide or iron oxide goes out, which is made in such a way that one is pure iron or pure Iron oxides initially in the presence of oxygen or if iron oxides are used even in the absence of this, heated to high temperatures, expediently to melt. It may be advantageous to corn the iron obtained from these oxides or to subject it to oxidation and reduction several times, the low temperature only in the case of the last reduction must be paused.
Claims (3)
reinem Eisenoxyd durch Erhitzen in Gegenwart von Sauerstoff oder im Falle der
Verwendung von Eisenoxyd auch bei dessen ; Abwesenheit auf lioheTemperaturen, zweck* 15 mäßig zum Schmelzen,· gewonnen ist.expediently not above 600 ö lying. '■:. ■ Temperature from an iron oxide low. io represents that was made of pure iron or
pure iron oxide by heating in the presence of oxygen or in the case of
Use of iron oxide also in its; Absence at low temperatures, expediently moderate for melting, is obtained.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE247852C true DE247852C (en) |
Family
ID=506611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT247852D Active DE247852C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE247852C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5211985A (en) * | 1991-10-09 | 1993-05-18 | Ici Canada, Inc. | Multi-stage process for continuous coating of fertilizer particles |
-
0
- DE DENDAT247852D patent/DE247852C/de active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5211985A (en) * | 1991-10-09 | 1993-05-18 | Ici Canada, Inc. | Multi-stage process for continuous coating of fertilizer particles |
| US5399186A (en) * | 1991-10-09 | 1995-03-21 | Ici Canada, Inc. | Apparatus and process for coating particles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE247852C (en) | ||
| DE2114769C3 (en) | Process for the preparation of a catalyst for the synthesis of ammonia | |
| DE2652382B2 (en) | Process for carbonitriding steel and pig iron products | |
| AT58408B (en) | Process for the catalytic production of ammonia from the elements. | |
| DE19940370C2 (en) | Process for nitrocarburizing metallic workpieces | |
| DE303952C (en) | ||
| DE229126C (en) | ||
| AT80841B (en) | Process for the production of hydrogen cyanide. | |
| DE395509C (en) | Procedure for resuscitation of contact substances | |
| DE582066C (en) | Process for the synthetic production of ammonia from its elements using iron carbide as a catalyst | |
| DE589906C (en) | Process for nitriding tungsten | |
| DE261507C (en) | ||
| DE259702C (en) | ||
| DE245183C (en) | ||
| DE579420C (en) | Process for the catalytic conversion of the nitrogen oxides contained in the raw coke oven gas | |
| DE551866C (en) | Process for the production of a catalyst for the synthesis of ammonia from complex iron cyan compounds | |
| DE2037175C3 (en) | Process for the stabilization of pyrophoric copper-zinc oxide catalysts | |
| DE283449C (en) | ||
| DE249447C (en) | ||
| AT53149B (en) | Process for the preparation of ammonia or its compounds from nitrogen-oxygen compounds. | |
| DE121555C (en) | ||
| DE528896C (en) | Process for the production of ammonia | |
| AT71168B (en) | Process for the preparation of aromatic amines. | |
| AT343603B (en) | METHOD OF MANUFACTURING AN AMMONIA DISSOCIATION CATALYST | |
| DE268929C (en) |