NANODIAMOND AND METHOD OF ITS OBTAINMENT Russian patent published in 2009 - IPC C01B31/06 B01J3/08 B82B1/00 B82B3/00 

FIELD: chemistry.

SUBSTANCE: carbon-containing explosive with negative oxygen balance is placed in a shell of condensed phase including reduction agent. Mass ratio of reduction agent to carbon-containing explosive is not less than 0.01:1. Detonation is performed in closed volume in gas medium inert to carbon. Detonation product is processed by 2-40% aqueous nitric acid together with oxygen of compressed air at 200-280°C and pressure of 5-15 MPa. Obtained nanodiamond includes carbon of cubic diamond modification and roentgen-amorphous phase at the ratio of (82-95):(18-5) wt % respectively. Element composition of nanodiamond, wt %: carbon 90.2-98.0; hydrogen 0.1-5.0; nitrogen 1.5-3.0; oxygen 0.1-4.5.

EFFECT: improved process safety, obtaining nanodiamond with predictable properties at industrial scale.

3 cl, 5 tbl