CA1094503A - Method of producing sols by electrodialysis - Google Patents
Method of producing sols by electrodialysisInfo
- Publication number
- CA1094503A CA1094503A CA290,209A CA290209A CA1094503A CA 1094503 A CA1094503 A CA 1094503A CA 290209 A CA290209 A CA 290209A CA 1094503 A CA1094503 A CA 1094503A
- Authority
- CA
- Canada
- Prior art keywords
- alkali metal
- sol
- compartment
- anode
- metal salt
- 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
Links
Landscapes
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A method of producing a sol of an element selected from the group con-sisting of aluminum, antimony, chromium, manganese, molybdenum, tin and tungstencomprising electrodialytically transferring alkali metal cations of an aqueous solution of a water soluble alkali metal salt of the oxide of the said element from an anodecompartment of an electrolytic cell to a cathode compartment of the electrolytic cell while essentially preventing the migration of the metal oxide into the cathode compartment by positioning a cation permselective membrane between the anode compartment and the cathode compartment while carefully and continuously controlling the pH of the solution and removing the so-produced sol from the anode compartment of the electrolytic cell as well as a novel electrodialytic cell for sol formation.
A method of producing a sol of an element selected from the group con-sisting of aluminum, antimony, chromium, manganese, molybdenum, tin and tungstencomprising electrodialytically transferring alkali metal cations of an aqueous solution of a water soluble alkali metal salt of the oxide of the said element from an anodecompartment of an electrolytic cell to a cathode compartment of the electrolytic cell while essentially preventing the migration of the metal oxide into the cathode compartment by positioning a cation permselective membrane between the anode compartment and the cathode compartment while carefully and continuously controlling the pH of the solution and removing the so-produced sol from the anode compartment of the electrolytic cell as well as a novel electrodialytic cell for sol formation.
Claims (11)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:"
1. A process for producing a sol of an element selected from the group consisting of aluminum, antimony, chromium, manganese, molybdenum, tin and tung-sten comprising electrodialytically transferring alkali metal cations of an aqueous solution of a water soluble alkali metal salt of the oxide of the said element from an anode compartment of an electrolytic cell to a cathode compartment of the electro-lytic cell while essentially preventing the migration of metal oxide into the cathode compartment by positioning a cation permselective membrane between the anode com-partment and the cathode compartment while carefully and continuously controlling the pH of the solution and removing the so-produced sol from the anode compartment of the electrolytic cell.
2. The method of claim 1 wherein the catholyte is an alkali metal hy-droxide solution.
3. The method of claim 2 wherein the alkali metal hydroxide is sodium hydroxide.
4. The method of claim 1 wherein the alkali metal salt is Na2SbO3 and the pH is maintained at 9.5 to 10.5.
5. The method of claim 1 wherein the alkali metal salt is Na2MoO3 and the pH is maintained at 2.5 to 3.5.
6. The method of claim 1 wherein the alkali metal salt is Na2SnO2 and the pH is maintained at 10.3 to 10.8.
7. The method of claim 1 wherein the anode compartment is provided with a plurality of particles which are fluidized and impinge on the anode so as to substantially prevent the deposition of silica thereon.
8. The method of claim 7 wherein the particles are in the form of glass beads.
9. A stannic oxide sol produced by the process of claim 6.
10. A molybdenum oxide sol produced by the process of claim 5.
11. An antimony oxide sol produced by the process of claim 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US787,314 | 1977-04-14 | ||
| US05/787,314 US4147605A (en) | 1976-03-22 | 1977-04-14 | Method of producing sols by electrodialysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1094503A true CA1094503A (en) | 1981-01-27 |
Family
ID=25141089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA290,209A Expired CA1094503A (en) | 1977-04-14 | 1977-11-04 | Method of producing sols by electrodialysis |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1094503A (en) |
-
1977
- 1977-11-04 CA CA290,209A patent/CA1094503A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |