US627266A - Carl luckow - Google Patents
Carl luckow Download PDFInfo
- Publication number
- US627266A US627266A US627266DA US627266A US 627266 A US627266 A US 627266A US 627266D A US627266D A US 627266DA US 627266 A US627266 A US 627266A
- Authority
- US
- United States
- Prior art keywords
- acid
- lead
- chromate
- carl
- electrolyte
- 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 36
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 24
- 239000002253 acid Substances 0.000 description 22
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 20
- 150000003839 salts Chemical class 0.000 description 18
- 239000011780 sodium chloride Substances 0.000 description 18
- 239000003792 electrolyte Substances 0.000 description 16
- 239000011734 sodium Substances 0.000 description 16
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 14
- 229940005991 chloric acid Drugs 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 229910052708 sodium Inorganic materials 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 8
- 238000005868 electrolysis reaction Methods 0.000 description 8
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 6
- 239000011591 potassium Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910000978 Pb alloy Inorganic materials 0.000 description 2
- 229910001245 Sb alloy Inorganic materials 0.000 description 2
- PXLIDIMHPNPGMH-UHFFFAOYSA-N Sodium chromate Chemical compound [Na+].[Na+].[O-][Cr]([O-])(=O)=O PXLIDIMHPNPGMH-UHFFFAOYSA-N 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 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 acid chromate 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.
- 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 cent. of the mixture, the quantities of salt always calculated free from water.
- This solution serves as electrolyte.
- the electrodes are of lead.
- the chromic acid and the water thus consumed must be continuously added afresh to the electrolyte.
- the acid chromate of lead formed does not adhere to the anodes, which keep bright.
- the process goes on continuously 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 acid by a surplus of chromic acid, acid chromate of lead is obtained.
- the anode consists of soft lead and the cathode of hard lead, an alloy of lead and antimony containing fivetenths per cent. of thelatter.
- the electrolyte is faintly acid.
- the tension of the current is 1.5 volts.
- the intensity of the same is fifty amperes.
- the density of the same is 0.5 ainperes per square decimeter of anode-surface.
- the electrolyte has to be kept faintly acid during the electrolysis, and water and chromic acid have continuously to be added.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrolytic Production Of Metals (AREA)
Description
ATENT rricE.
CARL LUCKOW, OF OOLOGNE-DEUTZ, GERMANY.
PROCESS OF PRODUCING ACID CHROMATE OF LEAD.
SPECIFICATION forming part of Letters Patent No. 627,266, dated June 20, 1899.
Application filed December 31, 1897. Serial No. 665,212. (No specimens.)
To all whom it ntay concern.-
Be it known that I, CARL LUoKow, a subject of the King of Prussia, German Emperor,
residing at Oologne-Deutz, Germany, have invented certain new and useful Improvements in Processes of Producing Acid Chromate 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 acid chromate of lead by means of electrolysis.
It consists, essentially, in the use 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. 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 cent. 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 acid chromate of lead. At the same time water is decomposed, the oxygen of which enters into the chromate of lead, while the hydrogen escapes. The following chemical formulae will explain the process somewhat further:
2OlO Na OrO Na Chlorate of sodium chromate of sodium in 4.1 1 0 OrO,H
is then precipitated by the chromic acid as OrO,,Pb 2Gl0 H. chromate of lead and chloric acid regenerated. The reactions go,"therefore, on according to the chemical equations:
The chromic acid and the water thus consumed must be continuously added afresh to the electrolyte. By the use of such two salts in about such proportions and such weak aqueous solutions the acid chromate of lead formed does not adhere to the anodes, which keep bright. The process goes on continuously 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 acid by a surplus of chromic acid, acid 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 with 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 fivetenths per cent. of thelatter. The electrolyte is faintly acid. The tension of the currentis 1.5 volts. The intensity of the same is fifty amperes. The density of the same is 0.5 ainperes per square decimeter of anode-surface. The electrolyte has to be kept faintly acid during the electrolysis, and water and chromic acid have continuously to be added.
What I claim is- The herein-described process of producing acid chromate of lead by means of electrolysis the continuous addition of Water and chromic by using in connection with an anode of lead acid. 10 an aqueous solution as electrolyte containing In Witness whereof I have hereunto set my from 0.3 to three per cent. of the sodium, pohand in presence of two Witnesses.
tassium or ammonium salts of chloric acid in CARL LUGKOVV.
mixture with the sodium, potassium or am- Witnesses: monium salts of chromic acid passing the cur- WILLIAM H. MADDEN, rent and maintaining the bath constant by l OTTO STREOKER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US627266A true US627266A (en) | 1899-06-20 |
Family
ID=2695866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US627266D Expired - Lifetime US627266A (en) | Carl luckow |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US627266A (en) |
-
0
- US US627266D patent/US627266A/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Peled et al. | The Electrodeposition of Aluminum from Aromatic Hydrocarbon: I. Composition of Baths and the Effect of Additives | |
| US627266A (en) | Carl luckow | |
| US2497988A (en) | Indium plating | |
| US626331A (en) | Carl luckow | |
| US3493478A (en) | Electrolytic preparation of perchlorates | |
| US627002A (en) | Carl luckow | |
| US627267A (en) | Carl ltjckow | |
| US641571A (en) | Process of producing solution of cyanogen halide. | |
| US626330A (en) | Caul luckow | |
| US1007388A (en) | Electrolytic method of refining iron. | |
| US626547A (en) | Carl ltjckow | |
| US733028A (en) | Electrolytically coating iron with zinc. | |
| McElroy et al. | The Anodic Oxidation of Higher Members of the Aluminum Family in Liquid Ammonia1 | |
| Carveth et al. | Electrolytic Chromium, II | |
| US546328A (en) | Carl hoepfner | |
| US3824160A (en) | Manufacture of copper dichromate and related materials | |
| US602873A (en) | Process of electrolytically manufacturing metallic sulfids | |
| US656982A (en) | Electrolytically treating scrap-tin. | |
| US736204A (en) | Reduction of nitro and azo compounds. | |
| US651396A (en) | Production of chromium oxid. | |
| US2260881A (en) | Process for the recovery of hydrocyanic acid | |
| US3755109A (en) | Electrolysis of alkali metal chlorides | |
| US1960700A (en) | Method of making magnesium alloys | |
| US3245891A (en) | Method for electrolytically shaping group 5b metals | |
| US1855140A (en) | Process for the manufacture of bismuth oxide, bismuth carbonate, and other salts of bismuth |