GB871645A - Method of converting carbonaceous material to diamond - Google Patents

Method of converting carbonaceous material to diamond

Info

Publication number
GB871645A
GB871645A GB12967/58A GB1296758A GB871645A GB 871645 A GB871645 A GB 871645A GB 12967/58 A GB12967/58 A GB 12967/58A GB 1296758 A GB1296758 A GB 1296758A GB 871645 A GB871645 A GB 871645A
Authority
GB
United Kingdom
Prior art keywords
platinum
cylinder
carbonaceous material
hollow
contain
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
Application number
GB12967/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB871645A publication Critical patent/GB871645A/en
Expired legal-status Critical Current

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
    • B01J2203/0605—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)

Abstract

<PICT:0871645/III/1> Diamond is produced by subjecting carbonaceous material to a pressure of 90,000-115,000 atmospheres and a temperature of 2050-2500 DEG C. in the presence of platinum. The reaction time may be as low as 30 secs. but is preferably about 3 mins. The carbonaceous material may be in the form of carbon black, charcoal, coke, coal, graphite, coal tar pitch, wood, paper, lithium carbide, or naphthalene. 0.1-10 parts, preferably 2 parts, of carbonaceous material per part of platinum may be employed. The product may be treated with fuming nitric acid. As shown, a platinum wire 35 and a surrounding hollow graphite cylinder 34 are compressed according to Specification 830,210 within a hollow pyrophyllite cylinder 31 and end platinum discs 32, heat being supplied by the passage of an electric current through the platinum wire. In an alternative, cylinder 31 may contain an intimate mixture of powdered carbonaceous material and powdered platinum which may be surrounded by a conducting hollow cylinder. In a further alternative cylinder 31 may contain a hollow platinum cylinder packed with carbonaceous material. In a further alternative cylinder 31 may contain alternate cylindrical slugs of platinum and carbonaceous material. Examples are given.
GB12967/58A 1957-04-29 1958-04-23 Method of converting carbonaceous material to diamond Expired GB871645A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US871645XA 1957-04-29 1957-04-29

Publications (1)

Publication Number Publication Date
GB871645A true GB871645A (en) 1961-06-28

Family

ID=22203485

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12967/58A Expired GB871645A (en) 1957-04-29 1958-04-23 Method of converting carbonaceous material to diamond

Country Status (1)

Country Link
GB (1) GB871645A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113694830A (en) * 2021-09-07 2021-11-26 南方科技大学 Nitrogen-doped diamond and synthetic method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113694830A (en) * 2021-09-07 2021-11-26 南方科技大学 Nitrogen-doped diamond and synthetic method thereof

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