GB1325818A - Method of producing finely dispersed platinum - Google Patents
Method of producing finely dispersed platinumInfo
- Publication number
- GB1325818A GB1325818A GB1325818DA GB1325818A GB 1325818 A GB1325818 A GB 1325818A GB 1325818D A GB1325818D A GB 1325818DA GB 1325818 A GB1325818 A GB 1325818A
- Authority
- GB
- United Kingdom
- Prior art keywords
- platinum
- dried
- aquosulphates
- reductant
- koh
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
1325818 Producing platinum ORDENA LENINA INSTITUT OBSCHEI I NEORGANICHESKOI KHIMII IMENI N S KURNAKOVA AKADEMII NAUK SSSR 8 Dec 1971 57102/71 Heading C7D [Also in Divisions B1 and C1] A method of producing finely-dispersed platinum comprises treating potassium tetranitroplatinum (II), K 2 [Pt (NO 2 ) 4 ] or platinum (II) dinitrodiamine, Pt (NH 3 NO 2 ) 2 , with sulphuric acid at 100-200‹C. reducing the resulting complex aquosulphates with hydrazine hydrate or aqueous alkali solution, and isolating the platinum product. The treatment with sulphuric acid is carried out in aqueous solution, and the complex aquosulphates are precipitated, filtered washed and dried. If hydrazine hydrate is used as reductant, the dried intermediate is suspended in distilled water before the hydrazine is added; the finely dispersed platinum is filtered out washed and dried. A similar reducing process is employed with 10-30% aqueous alkali solution e.g. KOH, but if only 5% KOH is used then a dihydroxosulphate is produced which dissolves in water and is reduced completely from the aqueous solution on active charcoal without using any other reductant.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5710271 | 1971-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1325818A true GB1325818A (en) | 1973-08-08 |
Family
ID=10478372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1325818D Expired GB1325818A (en) | 1971-12-08 | 1971-12-08 | Method of producing finely dispersed platinum |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1325818A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3992355A (en) | 1974-01-25 | 1976-11-16 | Shinetsu Chemical Company | Heat-curable organopolysiloxane compositions |
| CN114378298A (en) * | 2021-12-21 | 2022-04-22 | 上海铂生金属材料有限公司 | Preparation method of superfine platinum powder |
-
1971
- 1971-12-08 GB GB1325818D patent/GB1325818A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3992355A (en) | 1974-01-25 | 1976-11-16 | Shinetsu Chemical Company | Heat-curable organopolysiloxane compositions |
| CN114378298A (en) * | 2021-12-21 | 2022-04-22 | 上海铂生金属材料有限公司 | Preparation method of superfine platinum powder |
| CN114378298B (en) * | 2021-12-21 | 2024-04-02 | 上海铂生金属材料有限公司 | Preparation method of superfine platinum powder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |