Hitachi Chemical Company, Ltd.

The University of Tokyo

Dong Young Kim

Suguru Noda

Eisuke Haba

Shunsuke Ueda

Toshio Osawa

Hisashi Sugime

Zhongming Chen

Kei Hasegawa

Yukio Yamaguchi

Yusuke Kon

Kazunori Kakehi

A method for simultaneously producing carbon nanotubes and hydrogen according to the present invention is a method for simultaneously producing carbon nanotubes and hydrogen, in which using a carbon source containing carbon atoms and hydrogen atoms and being decomposed in a heated state, and a catalyst for producing carbon nanotubes and Hfrom the carbon source, the above carbon nanotubes are synthesized on a support in a heated state, placed in a reactor, and simultaneously, the above His synthesized from the above carbon source, the method comprising a synthesis step of flowing a source gas comprising the above carbon source over the above support, on which the above catalyst is supported, to synthesize the above carbon nanotubes on the above support and simultaneously synthesize the above Hin a gas flow.

Device for simultaneously producing carbon nanotubes and hydrogen

A heat exchanger type reaction tube includes a first tube part that forms a first flow channel into which a feed gas flows and in which the feed gas moves down; a second tube part that forms a second flow channel which is connected to the first flow channel and in which the feed gas moves up and that has a granular catalyst carrying support medium charged therein; and a heating device that heats the first tube part and the second tube part. Then, the first flow channel and the second flow channel are adjacent to each other while being separated from each other by a partition wall, and the second flow channel is provided with a distributor which holds the catalyst carrying support medium and through which the feed gas passes.

Heat exchanger type reaction tube

The present invention relates to metal catalyst particles for carbon nanotube synthesis, comprising carbon-containing regions on their surfaces.

Carbon-containing metal catalyst particles for carbon nanotube synthesis and method of producing the same, catalyst carrier support, and method of producing carbon nanotubes

The present invention relates to a method of producing carbon nanotubes, comprising a catalyst particle forming step of heating and reducing a catalyst raw material to form catalyst particles and a carbon nanotube synthesizing step of flowing a raw material gas onto the heated catalyst particles to synthesize carbon nanotubes, wherein a carbon-containing compound gas without an unsaturated bond is flowed onto the catalyst raw material and/or the catalyst particles in at least one of the catalyst particle forming step and the carbon nanotube synthesizing step.

Carbon nanotubes and production method thereof

The present invention provides a carbon nanomaterial production apparatusthat includes a reaction tubeinto which raw material gas and carrier gas are supplied and accordingly in which carbon nanomaterial is grown, a connection tubethat is connected to the reaction tubeand through which an aerosol-like mixture of the carbon nanomaterial and the carrier gas passes, and a collection tubethat is connected to the connection tubeand collects the carbon nanomaterial from the mixture. The collection tubeincludes a discharge sectionthat is located above a junctionwith the connection tubeand discharges the carrier gas contained in the mixture to outside, and a trapping sectionthat is located below the junctionwith the connection tubeand traps the carbon nanomaterial that is separated from the mixture by gravitational sedimentation.

Apparatus for producing nanocarbon material and method for producing nanocarbon material

The method for producing carbon nanotubes employs a carbon source that contains carbon and is decomposed when heated and a catalyst on a support that serves as a catalyst for production of carbon nanotubes from the carbon source. The method includes a catalyst loading step in which the catalyst starting material is distributed over the support to load the catalyst onto the support, a synthesis step in which the carbon nanotubes are synthesized on the support, and a separating step in which a separating gas stream is distributed over the support to separate the carbon nanotubes from the support, wherein the catalyst loading step, the synthesis step and the separating step are carried out while keeping the support in a heated state and switching supply of the catalyst starting material, the carbon source and the separating gas stream.

Growing community of inventors

Tokyo, Japan

Dong Young Kim