The Electrolysis of Water Processes And Applications
The Electrolysis of Water Processes And Applications
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According to Habermann's results the use of a solution of potassium chromate acidu- lated with sulphuric acid is the most suitable. If the solution contains 20 per cent, potassium chromate, no evolution of hydrogen takes place. No probability of the tech- 1 Zeitschr. F. Ang. Chemie, 1892, 323-328.
PROCESSES FOR EVOLUTION OF OXYGEN. 1 07 tiical utilization of this process can be entertained in view of the high price of the raw materials.
() By the Precipitation of Metal at the Cathode.
The obtai...ning of oxygen in the electrolytic way is possible by decomposing metallic oxide salts, using insoluble anodes and simply precipitating the metal out electrolytically. This metal must naturally be such as to be separated out in thick layers of precipitate with a good efficiency and without the formation of hydrogen or with very little of that gas. On this assumption quite a series of metals as zinc, nickel, etc. , are used.
PRECIPITATION OF COPPER.
Copper fills the conditions the nearest, but when using this metal a very careful control of the operation is necessary in order to use up the electrolyte as far as possible, and on the other side the conditions in price between the metal precipi- tated and the metallic salt from which it is taken, works against the industrial application of the process ; and finally, since the solution cannot be entirely freed from the metal and the saturation of the solution with oxide costs still more, there results a worthless dilute solution of the corresponding free acid in which the remainder of the metallic salt is still contained.
What to read after The Electrolysis of Water Processes And Applications?
You can find similar books in the "Read Also" column, or choose other free books by Viktor Engelhardt to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
According to Habermann's results the use of a solution of potassium chromate acidu- lated with sulphuric acid is the most suitable. If the solution contains 20 per cent, potassium chromate, no evolution of hydrogen takes place. No probability of the tech- 1 Zeitschr. F. Ang. Chemie, 1892, 323-328.
PROCESSES FOR EVOLUTION OF OXYGEN. 1 07 tiical utilization of this process can be entertained in view of the high price of the raw materials.
() By the Precipitation of Metal at the Cathode.
The obtai...ning of oxygen in the electrolytic way is possible by decomposing metallic oxide salts, using insoluble anodes and simply precipitating the metal out electrolytically. This metal must naturally be such as to be separated out in thick layers of precipitate with a good efficiency and without the formation of hydrogen or with very little of that gas. On this assumption quite a series of metals as zinc, nickel, etc. , are used.
PRECIPITATION OF COPPER.
Copper fills the conditions the nearest, but when using this metal a very careful control of the operation is necessary in order to use up the electrolyte as far as possible, and on the other side the conditions in price between the metal precipi- tated and the metallic salt from which it is taken, works against the industrial application of the process ; and finally, since the solution cannot be entirely freed from the metal and the saturation of the solution with oxide costs still more, there results a worthless dilute solution of the corresponding free acid in which the remainder of the metallic salt is still contained.
What to read after The Electrolysis of Water Processes And Applications?
You can find similar books in the "Read Also" column, or choose other free books by Viktor Engelhardt to read onlineMoreLess
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