GB863578A - Improvements in or relating to the preparation of graphitic oxide from graphite - Google Patents
Improvements in or relating to the preparation of graphitic oxide from graphiteInfo
- Publication number
- GB863578A GB863578A GB20469/57A GB2046957A GB863578A GB 863578 A GB863578 A GB 863578A GB 20469/57 A GB20469/57 A GB 20469/57A GB 2046957 A GB2046957 A GB 2046957A GB 863578 A GB863578 A GB 863578A
- Authority
- GB
- United Kingdom
- Prior art keywords
- graphite
- mixture
- anhydrous
- mno4
- inorganic
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
- C01B32/21—After-treatment
- C01B32/23—Oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Graphitic oxide is produced by the oxidation of graphite using a mixture of sulphuric acid, an anhydrous inorganic nitrate and an anhydrous inorganic permanganate containing less than 1% wt. water. The inorganic nitrate may be NaNO3, KNO3, Ba(NO3)2, Ca(NO3)2 or Mg(NO3)2 and the inorganic permanganate NaMnO4, KMnO4, Ba(MnO4)2, Ca(MnO4)2, Mg(MnO4)2. In operation, graphite, e.g. ceylon graphite, may be contacted, a small portion at a time, with a mixture of sulphinic acid, e.g. in amount 22 ml/gm of graphite, NaNO3 in amount 1/20 -\ba1/50th part by wt. of the graphite and KMnO4 in amount 1/10 -\ba1/7th part by wt. of the graphite at a temperature of 25-45 DEG preferably 35 DEG C. for 1/2 -1 hour. Alternatively, the graphite may be admixed with sulphuric acid and the anhydrous nitrate and the anhydrous permanganate subsequently added gradually to the mixture. Either method may be operated as a batch process and the former also as a continuous flow by passing the oxidising mixture and graphite through cooling coils at the required temperature. When the graphite has been substantially oxidised, e.g. the degree of oxidation is such as to have produced a product having a C:O atom ratio of 3.4 or less, the product can be obtained by diluting the reaction mixture with water, removing the suspended graphitic oxide by decantation, centrifuging and subsequently dialyzing out the acids and salts therefrom. H2SO4 residues may be recovered, concentrated and re-used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20469/57A GB863578A (en) | 1957-06-28 | 1957-06-28 | Improvements in or relating to the preparation of graphitic oxide from graphite |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB20469/57A GB863578A (en) | 1957-06-28 | 1957-06-28 | Improvements in or relating to the preparation of graphitic oxide from graphite |
Publications (1)
Publication Number | Publication Date |
---|---|
GB863578A true GB863578A (en) | 1961-03-22 |
Family
ID=10146447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20469/57A Expired GB863578A (en) | 1957-06-28 | 1957-06-28 | Improvements in or relating to the preparation of graphitic oxide from graphite |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB863578A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102292285A (en) * | 2009-01-26 | 2011-12-21 | 陶氏环球技术有限责任公司 | Nitrate salt-based process for manufacture of graphite oxide |
-
1957
- 1957-06-28 GB GB20469/57A patent/GB863578A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102292285A (en) * | 2009-01-26 | 2011-12-21 | 陶氏环球技术有限责任公司 | Nitrate salt-based process for manufacture of graphite oxide |
CN102292285B (en) * | 2009-01-26 | 2014-05-28 | 陶氏环球技术有限责任公司 | Nitrate salt-based process for manufacture of graphite oxide |
US9199851B2 (en) | 2009-01-26 | 2015-12-01 | Dow Global Technologies Llc | Nitrate salt-based process for manufacture of graphite oxide |
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