IE35509B1 - Improvements in and relating to the synthesis of diamond - Google Patents

Improvements in and relating to the synthesis of diamond

Info

Publication number
IE35509B1
IE35509B1 IE101471A IE101471A IE35509B1 IE 35509 B1 IE35509 B1 IE 35509B1 IE 101471 A IE101471 A IE 101471A IE 101471 A IE101471 A IE 101471A IE 35509 B1 IE35509 B1 IE 35509B1
Authority
IE
Ireland
Prior art keywords
reactor
compounds
mixture
graphite
temperature
Prior art date
Application number
IE101471A
Other versions
IE35509L (en
Inventor
A A Shulzhenko
A F Getman
Original Assignee
Uk Ni
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Uk Ni filed Critical Uk Ni
Publication of IE35509L publication Critical patent/IE35509L/en
Publication of IE35509B1 publication Critical patent/IE35509B1/en

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
    • B01J2203/061—Graphite
    • 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)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

1315778 Diamonds UKRAINSKY ORDENA TRUDOVOGO KRASNOGO ZNAMENI NAUCHNO - ISSLEDOVATELSKY KONSTRUKTORSKO - TEKHNOLOGICHESKY INSTITUT SINTETICHESKIKH SVERKHTVERDYKH MATERIALOV I INSTRUMENTA GOSPLANA UKRAINSKOI SSR 12 Aug 1971 [12 Aug 1970 17 Nov 1970(2)] 37938/71 Heading C1A Diamonds are made by subjecting carbon, preferably graphite, or a material capable of yielding free carbon under the reaction conditions, in contact with a compound of In, Tl, Ga, Ba, Be or an alkali metal to a temperature of at least 1800‹ C. and a pressure corresponding to this temperature within the range of diamond stability as defined in the graphite/diamond equilibrium system. The contact may arise by (1) forming a homogeneous mix of the carbon material and one or more of the compounds, (2) placing discs of the carbon material and of the compounds alternately in the reactor, or (3) disposing the compounds adjacent the ends of the reactor. Exemplified compounds in the form of a mix with graphite, preferably of spectral purity are Tl 2 O, Tl 2 CO 3 , In 2 O, Ga 2 O, a mixture of Tl 2 O and Tl 2 CO 3 , BaCO 3 , BeCO 3 , BeO, a mixture of BaO and BaCO 3 , LiO 2 , Li 2 CO 3 , Na 2 CO 3 , Na 2 O, K 2 CO 3 , K 2 O, a mixture of Li 2 O and Li 2 CO 3 , and Li 2 C 2 . The reaction is effected in conventional apparatus and the temperature in the reactor controlled by measuring changes in the electrical resistance of metals under pressure in the reactor. [GB1315778A]
IE101471A 1970-08-12 1971-08-11 Improvements in and relating to the synthesis of diamond IE35509B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SU1468619 1970-08-12
SU1486687 1970-11-17
SU1486689 1970-11-17

Publications (2)

Publication Number Publication Date
IE35509L IE35509L (en) 1972-02-12
IE35509B1 true IE35509B1 (en) 1976-03-03

Family

ID=27356197

Family Applications (1)

Application Number Title Priority Date Filing Date
IE101471A IE35509B1 (en) 1970-08-12 1971-08-11 Improvements in and relating to the synthesis of diamond

Country Status (8)

Country Link
BE (1) BE771233A (en)
CA (1) CA958309A (en)
CH (1) CH562162A5 (en)
DE (1) DE2140139C3 (en)
FR (1) FR2131189A5 (en)
GB (1) GB1315778A (en)
IE (1) IE35509B1 (en)
SE (1) SE377327B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721644C3 (en) * 1977-05-13 1981-11-05 Woermann, Eduard, Prof.Dr., 5100 Aachen Process for the synthesis of diamonds
US7270707B2 (en) * 2002-11-15 2007-09-18 University Of Science And Technology Of China Method for the preparation of diamond, graphite or their mixture
CN116239111B (en) * 2023-05-12 2023-08-01 北方工业大学 Method for low-pressure synthesis of PDC powder precursor

Also Published As

Publication number Publication date
BE771233A (en) 1972-02-14
DE2140139A1 (en) 1972-03-16
DE2140139B2 (en) 1978-02-09
IE35509L (en) 1972-02-12
CA958309A (en) 1974-11-26
SE377327B (en) 1975-06-30
CH562162A5 (en) 1975-05-30
DE2140139C3 (en) 1978-09-21
FR2131189A5 (en) 1972-11-10
GB1315778A (en) 1973-05-02

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