US626331A - Carl luckow - Google Patents
Carl luckow Download PDFInfo
- Publication number
- US626331A US626331A US626331DA US626331A US 626331 A US626331 A US 626331A US 626331D A US626331D A US 626331DA US 626331 A US626331 A US 626331A
- Authority
- US
- United States
- Prior art keywords
- lead
- carl
- electrolyte
- luckow
- chromic acid
- 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.)
- Expired - Lifetime
Links
- KRVSOGSZCMJSLX-UHFFFAOYSA-L Chromic acid Chemical compound O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 32
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 18
- 239000003792 electrolyte Substances 0.000 description 18
- 150000003839 salts Chemical class 0.000 description 16
- 239000011780 sodium chloride Substances 0.000 description 16
- 230000001264 neutralization Effects 0.000 description 14
- 229940005991 chloric acid Drugs 0.000 description 10
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000005868 electrolysis reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
- 150000003863 ammonium salts Chemical class 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 159000000001 potassium salts Chemical class 0.000 description 4
- 159000000000 sodium salts Chemical class 0.000 description 4
- 229910000978 Pb alloy Inorganic materials 0.000 description 2
- 229910001245 Sb alloy Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/14—Chromates; Bichromates
Definitions
- the invention has been patented in England, No. 14,801, dated August 6, 1895.
- the object of this invention is to produce neutral chroinate of lead by means of electrolysis.
- a salt of chloric acid with sodium, potassium, or ammonium in mixture with a salt of chromic acid with sodium, potassium, or ammonium in aqueous solution in connection with anodes of lead.
- the mixture should be about eighty per cent. of one of the salts named above of chloric acid and about twenty per cent. of one of the salts named above of chromic acid, and the aqueous solution should contain from 0.3 to three per ecnt. of the mixture, the quantities of salt always calculated free from water.
- This solution serves as electrolyte.
- the electrodes are of lead.
- the anode consists of soft lead and the cathode of hard lead, an alloy of lead and antimony containing five to ten per cent. of the latter.
- the electrolyte is neutral.
- the tension of the current is 1.8 volts.
- the density of the same is fifty amperes.
- the density of the same is 0.5 amperes per square decimeter of anode-surface.
- the electrolyte has to be kept neutral during the electrolysis, and water and chromic acid have continuously to be added.
- What I claim is The herein-described process of producing neutral chromate of lead by means of electrolysis consisting in using an anode of lead in connection with an aqueous solution as electrolyte containing from three-tenths to three per cent. of the sodium, potassium or ammonium salts of chloric acid in mixture with the sodium, potassium or ammonium salts of chromic acid, passing electric current through the said solution and maintaining the bath constant by the continuous addition of water and chromic acid, substantially as described.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
Nirn
FFICE.
ATEN
CARL LUOKOTV, OF COLOGNE-DEUTZ, GERMANY.
SPECIFICATION forming part of Letters Patent No. 626,331, dated June 6, 1899-.
Application filed December 31, 1897.
T0 aZZ whom it ntay concern:
Be it known that I, CARL LU OKOW, a subject of the King of Prussia, German Emperor, residing at Cologne-Deutz, Germany, have i11- vented certain new and useful Improvements in Processes of Producing Neutral Ghromate of Lead by Means of Electrolysis, of which the following is a specification.
The invention has been patented in England, No. 14,801, dated August 6, 1895.
The object of this invention is to produce neutral chroinate of lead by means of electrolysis.
It consists, essentially, in the use as electrolyte of a salt of chloric acid with sodium, potassium, or ammonium in mixture with a salt of chromic acid with sodium, potassium, or ammonium in aqueous solution in connection with anodes of lead. The mixture should be about eighty per cent. of one of the salts named above of chloric acid and about twenty per cent. of one of the salts named above of chromic acid, and the aqueous solution should contain from 0.3 to three per ecnt. of the mixture, the quantities of salt always calculated free from water. This solution serves as electrolyte. The electrodes are of lead. Under the influence of the electric current the lead of the anode is dissolved by the chloric acid of the one salt forming chlorate of lead, which dissolves and is directly precipitated by the chromic acid of the other salt, as chromate of lead. At the same time water is decomposed, the oxygen of which enters into the chromate of lead, while the hydrogen escapes. V The chromic acid thus consumed must be continuously added afresh to the electrolyte. By the use of such two salts in The process goes on continu- Serial No. 665,211. (No specimens.)
ously with the same electrolyte, as the chloric acid is not decomposed by the electric current and as the chromic acid and water consumed in the process are always added as they are consumed. The electrolyte being kept neutral, neutral chromate of lead is obtained.
Example: A diluted solution one and onehalf per cent. strong of a mixture of eighty parts, by weight, of chlorate of sodium and twenty parts, by weight, of chromate of sodium forms the electrolyte. The anode consists of soft lead and the cathode of hard lead, an alloy of lead and antimony containing five to ten per cent. of the latter. The electrolyte is neutral. The tension of the current is 1.8 volts. The density of the same is fifty amperes. The density of the same is 0.5 amperes per square decimeter of anode-surface. The electrolyte has to be kept neutral during the electrolysis, and water and chromic acid have continuously to be added.
What I claim is The herein-described process of producing neutral chromate of lead by means of electrolysis consisting in using an anode of lead in connection with an aqueous solution as electrolyte containing from three-tenths to three per cent. of the sodium, potassium or ammonium salts of chloric acid in mixture with the sodium, potassium or ammonium salts of chromic acid, passing electric current through the said solution and maintaining the bath constant by the continuous addition of water and chromic acid, substantially as described.
In witness whereof I have hereunto set my hand in presence of two witnesses.
CARL LUCKOV.
Witnesses:
O'r'ro STnncKnn, WILLIAM M. MADDEN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US626331A true US626331A (en) | 1899-06-06 |
Family
ID=2694933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US626331D Expired - Lifetime US626331A (en) | Carl luckow |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US626331A (en) |
-
0
- US US626331D patent/US626331A/en not_active Expired - Lifetime
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