Apparatus for high-efficiency synthesis of carbon nanostructure

A high-efficiency synthesis apparatus of a carbon nanostructure, which is configured to produce a carbon nanostructure using a catalysis by feeding a carrier gas and a raw material gas to a reaction chamber, the apparatus comprising:

• a two-way valve configured to feed, to the reaction chamber, the carrier gas which is controlled to be of a selected flow quantity;
• a first high-speed three-way valve which instantaneously feeds or interrupts the raw material gas which is controlled to be of a selected flow quantity, with respect to the reaction chamber, the first high-speed three-way valve being openable and closeable within a time shorter than 0.1 seconds;
• a second high-speed three-way valve which instantaneously feeds or interrupts the carrier gas whose flow quantity is controlled to be the same as the selected flow quantity of the raw material gas, with respect to the reaction chamber, the second high-speed three-way valve being openable and closeable within a time shorter than 0.1 seconds;
• and
• a merge section downstream of the first and second high-speed three-way valves and the two-way valve, the merge section being configured to introduce the raw material gas fed from the first high-speed three-way valve to the carrier gas fed from the two-way valve and the second high-speed three-way valve,
• wherein, a source of catalyst is in the reaction chamber,
• a controller configured to control, a total flow quantity of the carrier gas and the raw material gas, which is fed to the reaction chamber including the carrier gas of the selected flow quantity, to be constant in such a manner that at the time of feeding the raw material gas with the first high-speed three-way valve, the carrier gas is interrupted with the second high-speed three-way valve, and at the time of interrupting the raw material gas with the first high-speed three-way valve, the carrier gas is fed with the second high-speed three-way valve, and
• the carbon nanostructure is selected from the group consisting of a carbon nanotube, a carbon nanotube with beads, a brush-type carbon nanotube, a carbon nanotwist, a carbon nanocoil, and a fullerene in spherical shell form.

A high-efficiency synthesis apparatus of a carbon nanostructure, which is configured to produce a carbon nanostructure using a catalysis by feeding a carrier gas and a raw material gas to a reaction chamber, the apparatus comprising:

• a two-way valve configured to feed, to the reaction chamber, the carrier gas which is controlled to be of a selected flow quantity;
• a plurality of first high-speed three-way valves, provided in parallel with each other, which instantaneously feed or interrupt the raw material gas at respective feed flow quantity levels, so that feed flow quantity levels of the raw material gas are changed in a plurality of levels, each of the plurality of first high-speed three-way valves being openable and closeable within a time shorter than 0.1 seconds;
• a plurality of second high-speed three-way valves, provided in parallel with each other, which instantaneously feed or interrupt the carrier gas at respective feed flow quantity levels with respect to the reaction chamber, so that feed flow quantity levels of the carrier gas are changed in a plurality of levels that are numerically equal to the feed flow quantity levels of the raw material gas, each of the plurality of second high-speed three-way valves being openable and closeable within a time shorter than 0.1 seconds;
• and
• a merge section downstream of the first and second high-speed three-way valves and the two-way valve, the merge section being configured to introduce the raw material gas fed from the plurality of first high-speed three-way valves to the carrier gas fed from the two-way valve and the plurality of second high-speed three-way valves,
• wherein, a source of catalyst is in the reaction chamber,
• a controller configured to control a total flow quantity of the carrier gas and the raw material gas, which is fed to the reaction chamber including the carrier gas of the selected flow quantity, to be constant in such a manner that at the time of gas feed, at least one necessary high-speed three-way valve among the first high-speed three-way valves and the second high-speed three-way valves is switched to gas feed position, and
• the carbon nanostructure is selected from the group consisting of a carbon nanotube, a carbon nanotube with beads, a brush-type carbon nanotube, a carbon nanotwist, a carbon nanocoil, and a fullerene in spherical shell form.