DE259702C - - Google Patents
Info
- Publication number
- DE259702C DE259702C DENDAT259702D DE259702DA DE259702C DE 259702 C DE259702 C DE 259702C DE NDAT259702 D DENDAT259702 D DE NDAT259702D DE 259702D A DE259702D A DE 259702DA DE 259702 C DE259702 C DE 259702C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- pure
- contact mass
- reduction
- melted
- 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
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 125000004435 hydrogen atoms Chemical class [H]* 0.000 claims 1
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000006011 modification reaction Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 229910000460 iron oxide Inorganic materials 0.000 description 5
- 235000013980 iron oxide Nutrition 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- SHHIADHOJKLUIZ-UHFFFAOYSA-N azane;molecular hydrogen Chemical compound N.[H][H] SHHIADHOJKLUIZ-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000007711 solidification 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)
Description
In dem Patent 247852 ist angegeben, daß sich die katalytische Wirkung des reinen Eisens gegenüber Stickstoff - Wasserstoffgcmischen wesentlich verbessern läßt, wenn man ein Eisen verwendet, welches bei relativ niedrigen, zweckmäßig nicht oberhalb 6oo° liegenden Temperaturen aus seinen Verbindungen hergestellt wird, und es ist daselbst weiter angegeben, daß es vorteilhaft ist, das reine Eisen oder reine Eisenoxyd zunächst durch Erliitzen in Gegenwart von Sauerstoff, oder im Falle der .Verwendung von Eisenoxyd auch bei dessen Abwesenheit, auf hohe Temperaturen, zweckmäßig zum Schmelzen, zu erhitzen und hierauf bei den genannten Temperaturen zu reduzieren.In the patent 247852 it is stated that the catalytic effect of the pure Iron can be significantly improved over nitrogen - hydrogen mixing, if an iron is used, which at relatively low, preferably not above 600 ° temperature is made from its compounds, and it is there further stated that it is advantageous to use pure iron or pure iron oxide first by heating in the presence of oxygen, or in the case of using iron oxide even in the absence of this, to heat to high temperatures, expediently for melting, and then to the above Reduce temperatures.
Es wurde nun gefunden, daß es, wenn das reine Eisen oder die reinen Eisenverbindungen in der genannten Weise zunächst hoch er-It has now been found that if the pure iron or the pure iron compounds initially high in the manner mentioned
ao hitzt oder geschmolzen sind, nicht erforderlich ist, die Reduktion bei relativ niedrigen, zweckmäßig nicht über 6oo°. liegenden Temperaturen vorzunehmen, sondern daß in diesem Falle auch bei Verwendung höherer Reduktionstemperaturen wirksame · Eisenkontaktc erhalten werden. Zweckmäßig führt man die Reduktion in diesem Falle tunlichst rasch aus.ao is heated or melted, does not require the reduction at relatively low, expediently not more than 600 °. to make lying temperatures, but that in this Effective iron contact even when using higher reduction temperatures can be obtained. In this case, the reduction is expediently carried out as quickly as possible.
Es ist schon an und für sich überraschend, daß hoch erhitztes oder aus geschmolzenem 3°, Zustande erstarrtes Eisenoxyd im Gegensatz zu den sonstigen Eisenoxyden auch bei der Reduktion bei wesentlich über 6oo° ein sehr wirksames reines Eisen liefert. Dazu kommt noch, daß die Reduktion des Eisenoxyds bei z. B. 800 bis 900° bedeutend rascher erfolgt als bei niedrigen, unter 600° liegenden Temperaturen, wodurch die Herstellung des Eisenkontaktes bedeutend erleichtert wird, so daß also die Möglichkeit des höheren Erhitzern besonders vorteilhaft ist.It is in and of itself surprising that highly heated or melted 3 °, In contrast to the other iron oxides, solidified iron oxide was also formed in the Reduction at significantly above 600 ° provides a very effective pure iron. In addition nor that the reduction of iron oxide at z. B. 800 to 900 ° takes place much faster than at low temperatures below 600 °, whereby the establishment of the iron contact is significantly facilitated, so that the possibility of higher heating is particularly advantageous.
Beispiel 1..Example 1..
Reines Eisen (vgl. z. B. R i c ha r d s , Zeitschrift für anorg. Ch. 23 [1900], 245; K r e u s 1 e r , Ber. d. D. Physik. Ges. 6 [1908], , 344; Lambert und Thomson, Journ. Chem. Soc. 97 [1910], 2426) wird mit Sauerstoff oxydierend geschmolzen, die Masse nach dem Erstarren zu Körnern zerkleinert und mit 5< >Pure iron (see e.g. R i c ha r d s, magazine for anorg. Ch. 23 [1900], 245; K r e u s 1 e r, Ber. d. D. Physics. Ges. 6 [1908],, 344; Lambert and Thomson, Journ. Chem. Soc. 97 [1910], 2426) is with oxygen melted oxidatively, the mass after solidification crushed to grains and with 5 < >
*)■ Früheres Zusatzpatent 256855.*) ■ Former additional patent 256855.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE259702C true DE259702C (en) |
Family
ID=517406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT259702D Active DE259702C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE259702C (en) |
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0
- DE DENDAT259702D patent/DE259702C/de active Active
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