EP0185866B1 - Procédé pour la préparation d'oxyde d'argent (III) - Google Patents
Procédé pour la préparation d'oxyde d'argent (III) Download PDFInfo
- Publication number
- EP0185866B1 EP0185866B1 EP85112886A EP85112886A EP0185866B1 EP 0185866 B1 EP0185866 B1 EP 0185866B1 EP 85112886 A EP85112886 A EP 85112886A EP 85112886 A EP85112886 A EP 85112886A EP 0185866 B1 EP0185866 B1 EP 0185866B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silver
- iii
- oxide
- anodic oxidation
- production
- 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
- SBGJVZHTWCTWBJ-UHFFFAOYSA-N [Ag+]=O Chemical compound [Ag+]=O SBGJVZHTWCTWBJ-UHFFFAOYSA-N 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 11
- 230000003647 oxidation Effects 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 229910002651 NO3 Inorganic materials 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 150000001450 anions Chemical class 0.000 claims description 3
- 229910017744 AgPF6 Inorganic materials 0.000 claims 1
- 229910001494 silver tetrafluoroborate Inorganic materials 0.000 claims 1
- 229910021653 sulphate ion Inorganic materials 0.000 claims 1
- 150000003378 silver Chemical class 0.000 description 7
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 125000004430 oxygen atom Chemical group O* 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- -1 tetrafluoroborate Chemical compound 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- HTQOEHYNHFXMJJ-UHFFFAOYSA-N oxosilver zinc Chemical compound [Zn].[Ag]=O HTQOEHYNHFXMJJ-UHFFFAOYSA-N 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Inorganic materials [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012982 x-ray structure analysis Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
Definitions
- the invention relates to a method for producing silver (III) oxide by anodic oxidation of silver salts in aqueous solutions with current densities of 40 to 2000 A / m 2 .
- This object was achieved according to the invention in that those with complex anions other than nitrate and sulfate are used as silver salts and the anodic oxidation is carried out at temperatures from -15 to + 10 ° C. In particular, the anodic oxidation takes place at pH values between 4.5 and 7.5.
- the working temperature should preferably be between -12 and 0 ° C and the pH between 5.5 and 6.5.
- the process according to the invention can be carried out on silver salts with complex amions, except nitrate and sulfate. Silver salts with perchlorate, tetrafluoroborate or hexafluorophosphate are advantageously used as the anion. It has also proven to be advantageous if the silver salts are present in high concentration, if possible in the vicinity of the saturation point.
- the silver (III) oxide produced in this way can be used, for example, as an oxidizing agent, as an effective component of the positive electrodes in zinc-silver oxide primary cells or as a precursor for AgO production.
- a platinum wire with a diameter of 0.3 mm and a length of 500 mm serves as the anode, and a platinum crucible with a diameter of 50 mm serves as the cathode. The oxidation takes place with an electrical voltage of 10 volts and a current of 50 mA.
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Battery Electrode And Active Subsutance (AREA)
Claims (6)
1. Procédé pour l'obtention d'oxyde d'argent (III) par oxydation anodique de sels d'argent dans des solutions aqueuses, avec des densités de courant de 40 à 2000 A/m2, caractérisé en ce que l'on utilise en tant que sels d'argent ceux avec des anions complexes, nitrate et sulfate exceptés, et on effectue l'oxydation anodique à températures de -15 à + 10°C.
2. Procédé pour l'obtention d'oxyde d'argent (III) selon la revendication 1, caractérisé en ce que l'on effectue l'oxydation anodique à des températures de -12 à 0°C.
3. Procédé pour l'obtention d'oxyde d'argent (III) selon la revendication 1 ou 2, caractérisé en ce que l'on effectue l'oxydation anodique à des pH compris entre 4,5 et 7,5.
4. Procédé pour l'obtention d'oxyde d'argent (III) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on effectue l'oxydation anodique à des pH compris entre 5,5 et 6,5.
5. Procédé pour l'obtention d'oxyde d'argent (III) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'on utilise en tant que sels d'argent AgCI04, AgBF4 et AgPF6.
6. Procédé pour l'obtention d'oxyde d'argent (III) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les concentrations des sels d'argent se situent au voisinage du point de saturation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3442719A DE3442719C1 (de) | 1984-11-23 | 1984-11-23 | Verfahren zur Herstellung von Silber(III) -oxid |
| DE3442719 | 1984-11-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0185866A1 EP0185866A1 (fr) | 1986-07-02 |
| EP0185866B1 true EP0185866B1 (fr) | 1988-06-01 |
Family
ID=6250960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85112886A Expired EP0185866B1 (fr) | 1984-11-23 | 1985-10-11 | Procédé pour la préparation d'oxyde d'argent (III) |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US4695353A (fr) |
| EP (1) | EP0185866B1 (fr) |
| JP (1) | JPS61127881A (fr) |
| DE (2) | DE3442719C1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336499A (en) * | 1992-01-10 | 1994-08-09 | Antelman Technologies, Ltd. | Molecular crystal device for pharmaceuticals |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1687056A (en) * | 1922-11-24 | 1928-10-09 | Carl Rudolf | Process of electrolytically separating the alloys of silver with other precious or base metals |
| US3003935A (en) * | 1958-09-08 | 1961-10-10 | Yardney International Corp | Argentous oxide, powder and method for making same |
| US3048469A (en) * | 1958-12-22 | 1962-08-07 | Yardney International Corp | Method of manufacturing soluble silver salts |
| US4067788A (en) * | 1976-09-20 | 1978-01-10 | Electromedia, Inc. | Electrochemical production of finely divided metal oxides, metal hydroxides and metals |
| US4298506A (en) * | 1978-11-03 | 1981-11-03 | Duracell International Inc. | Method of treating silver oxide powder and the product formed therefrom |
-
1984
- 1984-11-23 DE DE3442719A patent/DE3442719C1/de not_active Expired
-
1985
- 1985-10-11 DE DE8585112886T patent/DE3563073D1/de not_active Expired
- 1985-10-11 EP EP85112886A patent/EP0185866B1/fr not_active Expired
- 1985-11-13 US US06/797,527 patent/US4695353A/en not_active Expired - Fee Related
- 1985-11-20 JP JP60258832A patent/JPS61127881A/ja active Pending
-
1987
- 1987-04-14 US US07/037,970 patent/US4717562A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US4717562A (en) | 1988-01-05 |
| JPS61127881A (ja) | 1986-06-16 |
| DE3442719C1 (de) | 1985-12-12 |
| DE3563073D1 (en) | 1988-07-07 |
| EP0185866A1 (fr) | 1986-07-02 |
| US4695353A (en) | 1987-09-22 |
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