FR2198892A1 - Synthetic diamond prodn - by pyrolysing perhalogenated organic cpds at lower pressures and temps - Google Patents
Synthetic diamond prodn - by pyrolysing perhalogenated organic cpds at lower pressures and tempsInfo
- Publication number
- FR2198892A1 FR2198892A1 FR7232003A FR7232003A FR2198892A1 FR 2198892 A1 FR2198892 A1 FR 2198892A1 FR 7232003 A FR7232003 A FR 7232003A FR 7232003 A FR7232003 A FR 7232003A FR 2198892 A1 FR2198892 A1 FR 2198892A1
- Authority
- FR
- France
- Prior art keywords
- pyrolysing
- prodn
- temps
- organic cpds
- lower pressures
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
- B01J3/062—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies characterised by the composition of the materials to be processed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2203/00—Processes utilising sub- or super atmospheric pressure
- B01J2203/06—High pressure synthesis
- B01J2203/065—Composition of the material produced
- B01J2203/0655—Diamond
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2203/00—Processes utilising sub- or super atmospheric pressure
- B01J2203/06—High pressure synthesis
- B01J2203/0675—Structural or physico-chemical features of the materials processed
- B01J2203/068—Crystal growth
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Diamonds are produced by decomposing organic cpds. free of C-H bonds (e.g. hexahalobenzenes, hexahaloethanes, tetrahaloquinones) e.g. at below 2000 degrees C and 100 kb to produce carbon atoms or groups of carbon atoms, which are then transformed (under the same conditions) to diamond. Since a large amount of halogen gas is formed, process is pref. carried out in the presence of a halogen trap (e.g. Li metal).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7232003A FR2198892A1 (en) | 1972-09-08 | 1972-09-08 | Synthetic diamond prodn - by pyrolysing perhalogenated organic cpds at lower pressures and temps |
OA54699A OA04183A (en) | 1972-09-08 | 1972-09-26 | Hard materials. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7232003A FR2198892A1 (en) | 1972-09-08 | 1972-09-08 | Synthetic diamond prodn - by pyrolysing perhalogenated organic cpds at lower pressures and temps |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2198892A1 true FR2198892A1 (en) | 1974-04-05 |
FR2198892B1 FR2198892B1 (en) | 1976-08-13 |
Family
ID=9104055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7232003A Granted FR2198892A1 (en) | 1972-09-08 | 1972-09-08 | Synthetic diamond prodn - by pyrolysing perhalogenated organic cpds at lower pressures and temps |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2198892A1 (en) |
OA (1) | OA04183A (en) |
-
1972
- 1972-09-08 FR FR7232003A patent/FR2198892A1/en active Granted
- 1972-09-26 OA OA54699A patent/OA04183A/en unknown
Non-Patent Citations (1)
Title |
---|
NEANT * |
Also Published As
Publication number | Publication date |
---|---|
FR2198892B1 (en) | 1976-08-13 |
OA04183A (en) | 1979-12-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1264180A (en) | ||
KR790000297B1 (en) | Process for producing n-phosphono methyl gylcine | |
NL7503221A (en) | PROCESS FOR THE LIQUIDIZATION OF CARBON. | |
ES412890A1 (en) | Method of recovering fluorine from waste gases | |
ES416915A1 (en) | Treatment of machine surfaces | |
FR2198892A1 (en) | Synthetic diamond prodn - by pyrolysing perhalogenated organic cpds at lower pressures and temps | |
BE788707A (en) | Synthetic diamond prodn - by pyrolysing perhalogenated organic cpds at lower pressures and temps | |
GB1199069A (en) | Methods of Curing Articles Manufactured from Cement and Asbestos | |
AT327981B (en) | PROCESS FOR THE PRODUCTION OF A STRUCTURE FOR GALLERIES, TUNNELS, MANHOLES ETC. AND EQUIPMENT FOR CARRYING OUT THE PROCEDURE | |
NL165931C (en) | PROCESS FOR THE PREPARATION OF TABLETS OR SUPPOSITORIES WITH ANTI-ARTERIOSCLEROTIC ACTION AND SO TABLETS OR SUPPOSITORIES OBTAINED. | |
FR2014790A1 (en) | Thermal treatment for informing the properties of - synthetic polymer material especially microcellulor | |
GB1262756A (en) | Process for producing nitric acid | |
SU515729A1 (en) | A method of making claydite | |
SU446125A3 (en) | Method for producing perfluoroalkyl iodide | |
SU493460A1 (en) | The method of producing aldehydes or ketones | |
SU534221A1 (en) | Method of treating plants with chemicals | |
AT324291B (en) | PROCESS FOR THE PRODUCTION OF NEW N-ALKYL-2,2,4-TRIMETHYLHEXANE-1,6-DIAMINES OR A MIXTURE OF SUCH COMPOUNDS | |
SU515482A1 (en) | The method of reclamation of ash dumps and tailings | |
GB1400534A (en) | Synthetic diamonds | |
SU482448A1 (en) | The method of obtaining hem-dichloro-1,2 diarylaziridines | |
USD224532S (en) | Ornamental showerhead | |
SU505628A1 (en) | The method of producing chlorine chloride | |
CH540864A (en) | Process for producing a carbon block and using the block obtained | |
SU613113A1 (en) | Method of waterproofing bolt holes in tubbing of collecting tunnel sectional facing | |
FR2062949A1 (en) | Aluminium - oxygen complexes prodn |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |