Diamond synthesis

Details Diamond synthesis Diamond synthesis

1979-08-16

1981-03-03

Meros, Edward J.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

C01B 3106

Patent

active

042540917

ABSTRACT:
The synthesis of diamonds from salts of iron, manganese, calcium and magnesium is disclosed. Specifically, such synthesis, in a closed system, has involved carbonate and oxylate salts of the indicated metals. The reaction occurs at temperatures between 550.degree. and 1600.degree. C., higher temperatures requiring higher reaction pressures; specifically, the production of synthetic diamonds from ferrous carbonate is disclosed. The ferrous carbonate was packed into a platinum capsule which was sealed gas-tight, packed in unfired pyrophyllite, and heated for two hours at 900.degree. C. while in a solid media press which applied a pressure of 40 kb (subsequently defined).

REFERENCES:
patent: 2947610 (1960-08-01), Hall et al.
patent: 3906082 (1975-09-01), Shulzhenko et al.
Bovenkerk et al, "Nature" Oct. 10, 1959, vol. 184, pp. 1094-1098.
Wentorf "The Journal of Physical Chemistry" vol. 69, No. 9, 1965, pp. 3063-3069.

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