GB1305046A - - Google Patents
Info
- Publication number
- GB1305046A GB1305046A GB5753170A GB5753170A GB1305046A GB 1305046 A GB1305046 A GB 1305046A GB 5753170 A GB5753170 A GB 5753170A GB 5753170 A GB5753170 A GB 5753170A GB 1305046 A GB1305046 A GB 1305046A
- Authority
- GB
- United Kingdom
- Prior art keywords
- graphite
- temperature
- diamond
- carbon
- calcium oxide
- 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
-
- 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
- B01J2203/0605—Composition of the material to be processed
- B01J2203/0625—Carbon
-
- 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)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
1305046 Producing diamond UKRAINSKY ORDENA TRUDOVOGO KRASNOGO ZNAMENI NAUCHNO - ISSLEDOVATELSKY KONSTRUKTORSKO - TEKHNOLOGICHESKY INSTITUT SINTETICHESKIKH SVERKHTVERDYKH MATERIALOV I INSTRUMENTA GOSPLANA UKRAINSKOI SSR 3 Dec 1970 [4 May 1970] 57531/70 Heading C1A Diamonds are prepared by subjecting a carboniferous material, i.e. carbon or a material which decomposes to give free carbon under the conditions used, and calcium oxide in direct contact therewith to a temperature of at least 1800‹ C. and a pressure corresponding to that temperature within the diamond stable region of the carbon-graphite-diamond phase equilibrium diagram. The temperature is preferably at least 2000‹ C. and the pressure at least 80k.bars. The preferred carboniferous material is graphite which may be spectrally pure graphite. The calcium oxide may be mixed into a homogenous mixture with the graphite, or the reaction mix may comprise discs of CaO and graphite which are packed in alternating array into the chamber.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1423098 | 1970-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1305046A true GB1305046A (en) | 1973-01-31 |
Family
ID=20451526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5753170A Expired GB1305046A (en) | 1970-05-04 | 1970-12-03 |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT328412B (en) |
BE (1) | BE759748A (en) |
CA (1) | CA945045A (en) |
CH (1) | CH557299A (en) |
FR (1) | FR2072780A5 (en) |
GB (1) | GB1305046A (en) |
IE (1) | IE35188B1 (en) |
SE (1) | SE371806B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981000560A1 (en) * | 1979-08-30 | 1981-03-05 | Vnii Sinteza Mineral | Method of making diamonds |
-
1970
- 1970-11-18 AT AT1038270A patent/AT328412B/en not_active IP Right Cessation
- 1970-11-19 CH CH1710770A patent/CH557299A/en not_active IP Right Cessation
- 1970-11-25 CA CA099,105A patent/CA945045A/en not_active Expired
- 1970-12-01 SE SE1626770A patent/SE371806B/xx unknown
- 1970-12-02 BE BE759748D patent/BE759748A/en unknown
- 1970-12-02 FR FR7043337A patent/FR2072780A5/fr not_active Expired
- 1970-12-03 GB GB5753170A patent/GB1305046A/en not_active Expired
-
1971
- 1971-05-04 IE IE56071A patent/IE35188B1/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1981000560A1 (en) * | 1979-08-30 | 1981-03-05 | Vnii Sinteza Mineral | Method of making diamonds |
Also Published As
Publication number | Publication date |
---|---|
IE35188L (en) | 1971-11-04 |
IE35188B1 (en) | 1975-12-10 |
DE2056764A1 (en) | 1971-11-18 |
ATA1038270A (en) | 1975-06-15 |
SE371806B (en) | 1974-12-02 |
FR2072780A5 (en) | 1971-09-24 |
CH557299A (en) | 1974-12-31 |
AT328412B (en) | 1976-03-25 |
BE759748A (en) | 1971-06-02 |
CA945045A (en) | 1974-04-09 |
DE2056764B2 (en) | 1977-06-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |