Detonation-mediated carbon particle production method

Patent metadata

Field	Value
Publication number	US-10294162-B2
Application number	US-201415107840-A
Country	US
Kind code	B2
Filing date	Dec 24, 2014
Priority date	Dec 27, 2013
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

A method for producing a carbon particle by a detonation method includes two steps. The first step is a step of disposing an explosive substance in the periphery of a raw material substance. The explosive substance has a detonation velocity of 6,300 m/s or more. The raw material substance contains an aromatic compound having not more than 2 nitro groups. The second step is a step of allowing the explosive substance to detonate.

First claim

The invention claimed is:

1. A method for producing a carbon particle by a detonation method, comprising:
a step of placing a raw material substance containing an aromatic compound having not more than 2 nitro groups in an explosion container;
a step of disposing an explosive substance having a detonation velocity of 6,300 m/s or more in the periphery of the raw material substance; and
a step of allowing the explosive substance to detonate, wherein
the explosive substance is a liquid at a normal temperature and a normal pressure, and
the liquid comprises at least one kind selected from the group consisting of a mixture of hydrazine and hydrazine nitrate, a mixture of hydrazine and ammonium nitrate, nitromethane, and a mixture of hydrazine and nitromethane.

2. The method according to claim 1 , wherein the raw material substance comprises at least one kind selected from the group consisting of dinitrotoluene, dinitrobenzene and dinitroxylene.

3. The method according to claim 1 , wherein the detonation is performed in a state where the raw material substance and the explosive substance are charged within a chamber.

4. The method according to claim 3 , wherein an atmosphere within the chamber does not substantially contain an oxygen gas.

5. The method according to claim 3 , wherein a coolant is disposed in the periphery of the raw material substance and the explosive substance within the chamber.

6. The method according to claim 5 , wherein the coolant is a substance which does not substantially produce an oxidative substance.

7. The method according to claim 1 , further comprising a step of recovering the carbon particle from a residue obtained in the detonation step.

8. The method according to claim 1 , wherein when a mass of a graphite carbon is defined as G and a mass of a diamond is defined as D, their mass ratio G/D is 2.5 or more.

9. The method according to claim 1 , wherein in the disposing step, the explosive substance surrounds the raw material substance while including the raw material substance.

10. The method according to claim 1 , wherein the detonation velocity of the explosive substance is higher than that of the raw material substance.

11. The method according to claim 1 , wherein a pressure during detonation of the explosive substance is higher than that of the raw material substance.

12. A method for producing a carbon particle by a detonation method, comprising:
a step of placing a raw material substance containing an aromatic compound having not more than 2 nitro groups in an explosion container;
a step of disposing an explosive substance having a detonation velocity of 6,300 m/s or more in the periphery of the raw material substance; and
a step of allowing the explosive substance to detonate, wherein
the explosive substance is an explosive substance in which carbon is not included as a constituent element.

Assignees

• Kobe Steel Ltd
• Aist
• National Institute Of Advanced Science And Tech

Inventors

• Wada Ryutaro
• Ueda Masaya
• Kakudate Yozo
• Fujiwara Shuzo
• Usuba Shu

Classifications

• C01B32/05

  Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30 · CPC title

• A61K47/06

  Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite · CPC title

• C04B2235/425

  Graphite · CPC title

• B01J3/08 Primary

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

• C01B32/15

  Nano-sized carbon materials · CPC title