GB181719A - Process for making prussian blue, starting from coal gas - Google Patents
Process for making prussian blue, starting from coal gasInfo
- Publication number
- GB181719A GB181719A GB16603/22A GB1660322A GB181719A GB 181719 A GB181719 A GB 181719A GB 16603/22 A GB16603/22 A GB 16603/22A GB 1660322 A GB1660322 A GB 1660322A GB 181719 A GB181719 A GB 181719A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferrocyanide
- coal gas
- ferric
- prussian blue
- starting
- 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
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/22—Compounds of iron
- C09C1/26—Iron blues
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
Coal gas, preferably freed from ammonia, is passed through a mixture of ferrous salt and an alkali such as sodium carbonate, preferably containing no free hydrate, oxygen being excluded and the reaction being effected in the cold. The liquor is then heated with an oxidizing agent such as air to oxidize sulphides while leaving the ferrocyanide and any sulphocyanide that may have formed unaffected. The liquor is then filtered, the filtrate being alkali ferrocyanide solution. Prussian blue is obtained by acidulating this solution and adding a ferric salt or, preferably, a ferrous salt followed by oxidation of the precipitate with air. The precipitate first separated, consisting of ferric hydrate and sulphur, is treated with dilute sulphuric acid, preferably at 60 DEG C. when the sulphur collects in lumps and ferric sulphate is obtained which may be used to oxidize the ferrous ferrocyanide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR181719X | 1921-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB181719A true GB181719A (en) | 1923-02-01 |
Family
ID=8878232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16603/22A Expired GB181719A (en) | 1921-06-16 | 1922-06-15 | Process for making prussian blue, starting from coal gas |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB181719A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436484A (en) * | 2019-07-31 | 2019-11-12 | 湖南科技大学 | A kind of biomass porous carbon/prussian blue composite material and preparation method |
| CN112759105A (en) * | 2019-10-21 | 2021-05-07 | 中国石油化工股份有限公司 | Method for selectively removing thiocyanate in nitrile-containing wastewater |
-
1922
- 1922-06-15 GB GB16603/22A patent/GB181719A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436484A (en) * | 2019-07-31 | 2019-11-12 | 湖南科技大学 | A kind of biomass porous carbon/prussian blue composite material and preparation method |
| CN112759105A (en) * | 2019-10-21 | 2021-05-07 | 中国石油化工股份有限公司 | Method for selectively removing thiocyanate in nitrile-containing wastewater |
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