DE115463C - - Google Patents
Info
- Publication number
- DE115463C DE115463C DENDAT115463D DE115463DA DE115463C DE 115463 C DE115463 C DE 115463C DE NDAT115463 D DENDAT115463 D DE NDAT115463D DE 115463D A DE115463D A DE 115463DA DE 115463 C DE115463 C DE 115463C
- Authority
- DE
- Germany
- Prior art keywords
- chromium
- chromium oxide
- salts
- oxide salts
- cathode compartment
- 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
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000002378 acidificating Effects 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000012266 salt solution Substances 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical class [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- QSWDMMVNRMROPK-UHFFFAOYSA-K chromium(3+) trichloride Chemical compound [Cl-].[Cl-].[Cl-].[Cr+3] QSWDMMVNRMROPK-UHFFFAOYSA-K 0.000 description 1
- 239000003593 chromogenic compound Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 150000005324 oxide salts Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
X^aiserlichesX ^ external
PATENTAMT.PATENT OFFICE.
Eine elektrolytische Darstellung von Chromosalzen ist in der amerikanischen Patentschrift 608652 von Villon beschrieben. Dieses Verfahren beschränkt aber die Verwendbarkeit der Chromoxydulverbindungen auf Reactionen in neutraler Lösung und läfst eine Isolirung der Chromosalze nicht zu.An electrolytic representation of chromium salts is in the American patent 608652 by Villon. However, this procedure limits the usability of the Chromium oxide compounds reacts in neutral solution and causes an isolation of the Chromosalts not too.
Die freien Chromoxydulsalze in fester Form wurden bis jetzt nur auf rein chemischem Wege durch Reduction der Chromoxydsalze dargestellt; da jedoch dieses Verfahren mit erheblichen Schwierigkeiten verbunden ist, blieben die Oxydulsalze des Chroms bislang schwer zugängliche Körper und konnten deshalb eine technische Anwendung nicht finden.The free chromium oxide salts in solid form have so far only been made on a purely chemical basis Ways represented by the reduction of the chromium oxide salts; However, since this procedure involves considerable Difficulties are associated, the oxide salts of chromium have hitherto remained heavy accessible bodies and therefore could not find a technical application.
Es wurde nun gefunden, dafs sich die Oxydulverbindungen des Chroms, insbesondere das Chromosulfat, sehr leicht und glatt gewinnen und isoliren lassen durch die elektrolytische Reduction der Chromoxydverbindungen in stark saurer Lösung und bei hoher Stromdichte.It has now been found that the oxide compounds of chromium, especially the Chromosulphate, very easily and smoothly obtained and isolated by the electrolytic Reduction of the chromium oxide compounds in a strongly acidic solution and with a high current density.
Durch dieses Verfahren sind die durch eine energische Reductionskraft ausgezeichneten Chromoverbindungen technisch verwerthbare Producte geworden.:By this procedure they are distinguished by an energetic reducing power Chromogenic compounds have become technically usable products:
i. Darstellung von Chromosulfat ausi. Representation of chromosulfate from
Chromisulfat.Chromium sulfate.
In einer Zersetzungszelle wird durch Einsetzen eines Diaphragmas ein Anoden- und Kathodenraum hergestellt. Der erstere wird mit 3opCt. Schwefelsäure beschickt, als Anode eine Bleielektrode verwendet. In den Kathodenraum giefst man eine Lösung von 500 Gewich tstheilen Chromsulfat in 500 Raumtheilen Wasser und 250 Raumtheilen concentrirter Schwefelsäure, benutzt als Kathode eine Elektrode aus Blei und reducirt mit einem Strom von hoher Dichte, zweckmäfsig mit 1000 bis ι 500 Ampere pro Quadratmeter.In a decomposition cell, an anode and Cathode compartment made. The former is 3opCt. Sulfuric acid is charged as an anode a lead electrode is used. A solution of 500% by weight is poured into the cathode compartment Partly chromium sulfate in 500 parts water and 250 parts concentrated Sulfuric acid, uses a lead electrode as cathode and reduces it with a current of high density, expediently with 1000 to ι 500 amperes per square meter.
Das Chromosulfat fällt als blaugrünes, feinkörniges- Krystallpulver aus, welches durch Absaugen und Nachwaschen mit Alkohol von der anhängenden Mutterlauge befreit wird. Es enthält ungefähr 1 Mol. Krystallwasser und verändert sich nicht beim Liegen an der Luft. Die Verbindung scheint mit der in Dammer's Handbuch der anorganischen Chemie (Band III, Seite 546, Absatz 7, vorletzte Zeile) beschriebenen identisch zu sein.The chromosulfate precipitates as a blue-green, fine-grained crystal powder, which through Suction and washing with alcohol is freed from the attached mother liquor. It contains about 1 mole of crystalline water and does not change when lying in the air. The connection seems to be with the one in Dammer's Handbook of Inorganic Chemistry (Volume III, page 546, paragraph 7, penultimate line) to be identical.
Es löst sich langsam in Wasser mit schwach blaugrüner Farbe.It slowly dissolves in water with a pale blue-green color.
2. Darstellung von Chromochlorid.2. Representation of chromochloride.
Verwendet man an Stelle von Chromsulfat und Schwefelsäure Chromchlorid und Salzsäure als Kathodenelektrolyt und arbeitet im Uebrigen nach den bei der Darstellung von Chromosulfat gegebenen Bedingungen, so erhält man Chromochlorid als grüne körnige Krystallmasse. If chromium chloride and hydrochloric acid are used instead of chromium sulfate and sulfuric acid as cathode electrolyte and otherwise works according to the illustration of Chromosulfate given the conditions, chromochloride is obtained as a green, granular crystal mass.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE115463C true DE115463C (en) |
Family
ID=384882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT115463D Active DE115463C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE115463C (en) |
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0
- DE DENDAT115463D patent/DE115463C/de active Active
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