Method for manufacturing nanoparticles by detonation

Patent metadata

Field	Value
Publication number	US-10906016-B2
Application number	US-201314382200-A
Country	US
Kind code	B2
Filing date	Feb 28, 2013
Priority date	Feb 29, 2012
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

The present invention relates to the field of manufacturing nanoparticles, and specifically to a method for manufacturing diamond nanoparticles, or nanodiamonds, by detonation at least one explosive charge, wherein said at least one explosive charge is nanostructured.

First claim

The invention claimed is:

1. A method for producing nanodiamonds, wherein said method comprises: detonating at least one nanostructured explosive charge formed by explosive particles having a size of less than 250 nm and obtaining nanodiamonds.

2. The method according to claim 1 , wherein the nanodiamonds have a maximum size of 8 nm.

3. The method according to claim 1 , wherein the explosive particles have a size comprised between 2 and 200 nm.

4. The method according to claim 1 , wherein the explosive particles comprise at least one explosive compound.

5. The method according to claim 1 , wherein the explosive particles further comprise a non-explosive compound.

6. The method according to claim 5 , wherein the non-explosive compound is an organic compound.

7. The method according to claim 5 , wherein the non-explosive compound is an inorganic compound.

8. The method according to claim 1 , wherein the method further comprises successive steps of:
preparing a nanostructured explosive charge formed with explosive particles;
detonating the nanostructured explosive charge in the presence of a cooling medium; and
purifying the nanodiamonds.

9. The method according to claim 1 , wherein the method further comprises the successive step of:
mixing explosive particles and at least one non-explosive compound to obtain a mixture;
preparing the nanostructured explosive charge with said mixture;
detonating the nanostructured explosive charge in the presence of a cooling medium;
obtaining nanodiamonds; and
purifying said nanodiamonds.

10. The method according to claim 1 , wherein the nanodiamonds are metal oxide nanoparticles.

11. The method according to claim 10 , wherein the metal oxide is selected from boron oxide, iron oxide, nickel oxide, chromium oxide, zirconium oxide, titanium oxide, silicon oxide, tungsten oxide, manganese oxide, vanadium oxide, copper oxide, zinc oxide, molybdenum oxide, niobium oxide and nitrium oxide.

12. The method according to claim 1 , wherein the nanostructured explosive charge is obtained by explosive particles produced according to flash nebulization.

13. The method according to claim 1 , wherein the nanostructured explosive charge is obtained by:
preparing a solution comprising at least one organic or mineral compound and at least one solvent;
heating the solution, under a pressure ranging from 3 to 300 bars, at a temperature above the boiling point of the solvent or at a temperature above the boiling point of the mixture of solvents;
atomizing the solution in an atomization chamber by means of at least one dispersion device and under an angle ranging from 30 to 150° at a pressure ranging from 0.0001 to 2 bars; and
separating the solvent in a gaseous form, thereby obtaining said nanostructured explosive charge.

14. The method according to claim 4 , wherein the explosive compound is selected from the group formed with cyclotrimethylenetrinitramine (RDX), trinitrotoluene (TNT), hexanitrostylene (HNS), octogen (HMX), triaminotrinitrobenzene (TATB), pentrite (PETN), nitrocellulose, hexanitrohexaazaisowurtzitane (CL20), bis-5-nitrotetrazole tetramine cobalt perchlorate (BNCP) and any of their mixtures.

15. The method according to claim 4 , wherein the explosive compound is a mixture of cyclotrimethylenetrinitramine (RDX) and trinitrotoluene (TNT).

16. The method according to claim 8 , wherein the cooling medium is water.

17. A method for producing nanodiamonds, wherein said method comprises: detonating at least one nanostructured explosive charge formed by explosive particles having a size of less than 250 nm and obtaining nanodiamonds wherein more than 75% of nanodiamonds produced have a size of less than 5 nm.

18. The method according to claim 17 , wherein the nanostructured explosive charge is obtained by explosive particles produced according to flash nebulization.

19. The method according to claim 17 , wherein said nanostructured explosive particles comprise at least one explosive compound and wherein said explosive compound is selected from the group formed with cyclotrimethylenetrinitramine (RDX), trinitrotoluene (TNT), hexanitrostylene (HNS), octogen (HMX), triaminotrinitrobenzene (TATB), pentrite (PETN), nitrocellulose, hexanitrohexaazaisowurtzitane (CL20), bis-5-nitrotetrazole tetramine cobalt perchlorate (BNCP) and any of their mixtures.

20. The method according to claim 17 , wherein said explosive particles comprise at least one explosive compound and wherein said explosive compound is a mixture of cyclotrimethylenetrinitramine (RDX) and trinitrotoluene (TNT).

21. The method according to claim 1 , wherein said explosive particles have a size comprised between 2 and 100 nm.

22. The method according to claim 1 , wherein said explosive particles have a size comprised between 2 and 50 nm.

23. The method according to claim 17 , wherein said explosive particles have a size comprised between 2 and 200 nm.

24. The method according to claim 17 , wherein said explosive particles have a size comprised between 2 and 100 nm.

25. The method according to claim 17 , wherein said explosive particles have a size comprised between 2 and 50 nm.

Assignees

• Isl—Institut Franco Allemand De Rech De Saint Louis
• Centre Nat Rech Scient
• Centre National De La Rech Scientique C N R S

Inventors

• Spitzer Denis
• Pichot Vincent
• Risse Benedikt

Classifications

• B01J3/08 Primary

  Application of shock waves for chemical reactions or for modifying the crystal structure of substances · CPC title

• C06B25/04

  the nitrated compound being an aromatic · CPC title

• C01B32/26

  Preparation (by using ultra-high pressure B01J3/06; by crystal growth C30B29/04) · CPC title

• C06B25/34

  the compound being a nitrated acyclic, alicyclic or heterocyclic amine · CPC title