DE273322C - - Google Patents
Info
- Publication number
- DE273322C DE273322C DENDAT273322D DE273322DA DE273322C DE 273322 C DE273322 C DE 273322C DE NDAT273322 D DENDAT273322 D DE NDAT273322D DE 273322D A DE273322D A DE 273322DA DE 273322 C DE273322 C DE 273322C
- Authority
- DE
- Germany
- Prior art keywords
- iron oxide
- hydrogen
- nitrobenzene
- reduction
- tube
- 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
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910000460 iron oxide Inorganic materials 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N Nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000010425 asbestos Substances 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 241000295146 Gallionellaceae Species 0.000 description 1
- HKOOXMFOFWEVGF-UHFFFAOYSA-N Phenylhydrazine Chemical compound NNC1=CC=CC=C1 HKOOXMFOFWEVGF-UHFFFAOYSA-N 0.000 description 1
- 210000002268 Wool Anatomy 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical compound C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000003197 catalytic Effects 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052803 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Chemical class O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/30—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds
- C07C209/32—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups
- C07C209/36—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings in presence of hydrogen-containing gases and a catalyst
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
- M 273322-KLASSE 12 g. GRUPPE- M 273322 CLASS 12 g. GROUP
CHEMISCHE FABRIKEN vorm. WEILER-ter MEER in UERDINGEN a. Rh.CHEMICAL FACTORIES vorm. WEILER-ter SEA in UERDINGEN a. Rh.
Verfahren zur Reduktion von aromatischen Nitrokörpern. Patentiert im Deutschen Reiche vom 24. September 1912 ab.Process for the reduction of aromatic nitro bodies. Patented in the German Empire on September 24, 1912.
Nach dem Verfahren der Patentschrift 139475, Kl. 12 q, können aromatische Nitrokörper reduziert werden, indem man diese gasförmig in Gegenwart von Wasserstoff oder Wassergas über erhitzte Metalle, wie Kupfer, Nickel, Kobalt, Eisen oder Platin leitet. In der Patentschrift ist bemerkt, daß Eisen nur eine geringe katalytische Wirkung ausübt, da seine Aktivität geringer wie die der übrigen Me-Aromatic nitro bodies can be reduced by the process of patent specification 139475, class 12 q by placing them in gaseous form in the presence of hydrogen or water gas over heated metals such as copper, nickel, Cobalt, iron or platinum conducts. In the patent it is noted that iron is only one has little catalytic effect, since its activity is less than that of the other
talle sei. 'talle is. '
Es wurde nun gefunden, daß im Gegensatz hierzu Sauerstoffverbindungen des Eisens, wie Eisenoxydul oder Eisenoxyduloxyd, als Wasserstoffüberträger hervorragend geeignet sind und sich daher vorzüglich zur kontinuierlichen Darstellung von Reduktionsverbindungen aus Nitrokörpern im reduzierenden Gasstrome verwenden lassen. Leitet man z. B. über erhitztes, fein verteiltes Eisenoxydul oder Eisenoxyduloxyd, gegebenenfalls auf einem indifferenten Körper wie Asbest ausgebreitet, Nitrobenzoldämpfe gleichzeitig mit Wasserstoff, so vollzieht sich die Reduktion äußerst glatt, und es destilliert Anilin kontinuierlich in die Vorlage über.It has now been found that, in contrast to this, oxygen compounds of iron, like iron oxide or iron oxide, excellently suited as a hydrogen carrier are and therefore excellent for the continuous representation of reducing compounds from nitro bodies can be used in the reducing gas stream. If one leads z. B. heated, finely divided iron oxide or Iron oxide, possibly spread on an indifferent body such as asbestos, Nitrobenzene vapors at the same time as hydrogen, the reduction takes place extremely smooth, and aniline distilled continuously into the template.
In dem nachfolgenden Beispiel ist die kontinuierliche Reduktion von Nitrobenzol zu Anilin beschrieben, selbstverständlich können in analoger Weise auch andere aromatische Nitrokörper reduziert werden; Voraussetzung ist nur, daß in einem Überschuß von Wasserstoff und möglichst unter Ausschluß der atmosphärischen Luft und bei nicht zu hoher Temperatur gearbeitet wird.In the example below, the continuous reduction of nitrobenzene is too Aniline described, of course, other aromatic compounds can also be used in an analogous manner Nitro bodies are reduced; The only requirement is that there is an excess of hydrogen and work is carried out with the exclusion of atmospheric air and at a temperature that is not too high.
35 Beispiel.35 example.
Eine eiserne Röhre wird mit Asbestwolle oder Asbestfaser beschickt, auf die man 70 Teile Eisenoxydul oder Eisenoxyduloxyd fein verteilt hat. Die Röhre ist mit einem Eintrittsstutzen für die Nitrobenzoldämpfe und einem solchen für den Wasserstoff (oder ein ähnlich wirkendes reduzierendes Gas, ζ. Β. Wassergas) versehen. Auf der entgegengesetzten Seite befindet sich ein Gasaustrittsstutzen, der mit einem Kühler und einer Vorlage verbunden ist.An iron tube is filled with asbestos wool or asbestos fiber, on which one Has finely divided 70 parts of iron oxide or iron oxide. The tube is with a Inlet nozzles for the nitrobenzene vapors and one for the hydrogen (or a similarly acting reducing gas, ζ. Β. Water gas). On the opposite On the side there is a gas outlet nozzle that comes with a cooler and a template connected is.
Die Temperatur wird durch Thermometer, die an dem Rohr angebracht sind, kontrolliert und durch Beheizen des Rohres von außen vorteilhaft oberhalb des Siedepunktes des Nitrobenzols gehalten. In demselben Maße wie das Nitrobenzol (1000 Teile) und der Wasserstoff (70 Teile) auf der einen Seite der Röhre eintreten, destilliert das Anilin (etwa 700 Teile) auf der andern Seite ab. Die Dauer der Reduktion beträgt etwa 3 bis 5 Stunden. Das Anilin wird in einer Kühlschlange verdichtet und sammelt sich in der Vorlage an, die mit einer Vakuumpumpe oder unmittelbar mit der atmosphärischen Luft in Verbindung steht. Man hat selbstverständlich dafür zu sorgen, daß stets Wasserstoff in genügender Menge vorhanden ist, so daß dieThe temperature is controlled by thermometers attached to the tube and by heating the pipe from the outside, advantageously above the boiling point of the Nitrobenzene held. In the same measure as the nitrobenzene (1000 parts) and the Hydrogen (70 parts) entering on one side of the tube distills the aniline (approx 700 pieces) on the other side. The duration of the reduction is about 3 to 5 hours. The aniline is compressed in a cooling coil and accumulates in the template, those with a vacuum pump or directly with the atmospheric air stands. It goes without saying that one has to ensure that there is always sufficient hydrogen Amount is available so that the
Reduktion des Nitrobenzols nicht bei den Zwischenstufen (Azobenzol oder Hydrazobenzol) stehenbleibt. Um völlig sicher zu gehen, kann man mit einem Überschuß von Wasserstoff arbeiten, welcher dann nach dem Austritt aus der Röhre mit frischen Nitrobenzoldämpfen gemengt, in eine zweite Röhre eintreten kann und so zur vollen Ausnutzung gebracht wird.Reduction of the nitrobenzene not in the intermediate stages (azobenzene or hydrazobenzene) stop. To be completely safe, you can use an excess of hydrogen work, which then exits the tube with fresh nitrobenzene vapors mixed, can enter a second tube and is thus brought to full utilization.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE273322C true DE273322C (en) |
Family
ID=529788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT273322D Active DE273322C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE273322C (en) |
-
0
- DE DENDAT273322D patent/DE273322C/de active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1163790B (en) | Process for the production of propionic acid | |
DE1253685B (en) | Process for the removal of nitrogen oxides from nitrogen oxide-containing exhaust gases | |
DE273322C (en) | ||
DE2063519C3 (en) | Isomerizing oxidation of ethylenic alcohols to ethylenic carbonyl compounds | |
DE2154074B2 (en) | Process for the production of methanol by reacting carbon monoxide and hydrogen over a catalyst and catalyst composition for carrying out the process | |
CH670250A5 (en) | ||
DE263396C (en) | ||
DE550909C (en) | Process for the catalytic production of hydrogen cyanide | |
DE2414930A1 (en) | METHOD FOR MANUFACTURING HEXAMETHYLENIMINE | |
CH127690A (en) | Process for the preparation of a product containing mainly benzene. | |
AT116601B (en) | Process for the preparation of methanol and other oxygen-containing organic compounds. | |
DE441433C (en) | Process for the production of organic compounds by catalytic gas reactions | |
DE841141C (en) | Process for the production of ethylene from gases containing acetylene and hydrogen | |
DE852987C (en) | Process for the recovery of metals in catalytic processes | |
DE139457C (en) | ||
DE848498C (en) | Process for the production of hexamethylenediamine | |
DE875197C (en) | Process for the production of ethylene from acetylene by hydrogenation | |
DE600677C (en) | Process for the preparation of methyl alcohol by reducing carbon oxide | |
DE302514C (en) | ||
DE2933314C2 (en) | Process for the production of nitrosobenzene | |
DE238137C (en) | ||
DE563124C (en) | Process for the production of hydrocyanic acid | |
DE903214C (en) | Process for the dehydrogenation of dihydroisoquinoline compounds | |
DE307380C (en) | ||
AT107300B (en) | Process for the production of ammonia salts from a gas mixture containing hydrogen sulphide and ammonia. |