Nissin Electric Co., Ltd.

Otsuka Chemical Co., Ltd.

Taiyo Nippon Sanso Corporation

Public University Corporation Osaka Prefecture University

Japan Science and Technology Agency

Technology Research Institute of Osaka Prefecture

Keisuke Shiono

Yoshikazu Nakayama

Takeshi Nagasaka

Hiroyuki Tsuchiya

Toshiki Goto

Toshikazu Nosaka

Osamu Suekane

Nobuharu Okazaki

Takashi Okawa

Yugo Higashi

Lujun Pan

An aggregate of carbon-based fine structures in which a plurality of carbon-based fine structures are collected, wherein respective carbon-based fine structures are oriented in the same direction. The above aggregate of carbon-based fine structures is an aggregate of a plurality of carbon-based fine structures in a state they are pulled by one another with strong interaction, and has such a length that allows the improvement of the handeability and workability thereof.

Carbon-based fine structure array, aggregate of carbon-based fine structures, use thereof and method for preparation thereof

An aggregate of carbon-based fine structures in which a plurality of carbon-based fine structures are collected, wherein respective carbon-based fine structures are oriented in the same direction. The above aggregate of carbon-based fine structures is an aggregate of a plurality of carbon-based fine structures in a state they are pulled by one another with strong interaction, and has such a length that allows the improvement of the handleability and workability thereof.

A method for synthesizing carbon nanocoils with high efficiency, by determining the structure of carbon nuclei that have been attached to the ends of carbon nanocoils and thus specifying a true catalyst for synthesizing carbon nanocoils is implemented. The catalyst for synthesizing carbon nanocoils according to the present invention is a carbide catalyst that contains at least elements (a transition metal element, In, C) or (a transition metal element, Sn, C), and in particular, it is preferable for the transition metal element to be Fe, Co or Ni. In addition to this carbide catalyst, a metal catalyst of (Fe, Al, Sn) and (Fe, Cr, Sn) are effective. From among these, catalysts such as FeInC, FeInCSnw and FeSnC are particularly preferable. The wire diameter and the coil diameter can be controlled by using a catalyst where any of these catalysts is carried by a porous carrier.

Catalyst for synthesizing carbon nanocoils, synthesizing method of the same, synthesizing method of carbon nanocoils, and carbon nanocoils

A material gas and a catalyst are introduced through a material supplying tube path and a catalyst supplying tube path together with a carrier gas into a reactor equipped on its outer periphery with a heat applicator for thermally decomposing the material gas. The reactor has a convention regulator fitted to the discharge end of the catalyst supplying tube path. The convection regulator covers an edge side of the reactor to regulate gas flow in the reactor so that the flow does not reach the edge side. Due to this, a convection state can be efficiently produced in a reaction region. Consequently, it becomes possible to prevent contamination defect caused by accumulation/adherence of concretion of catalyst, which was generated by aggregation of cooled catalyst in the low-temperature region of the reactor and a decomposition product of the material gas. Thus the efficiency of carbon nanostructure production can be improved.

Production method and production device for carbon nano structure

Growing community of inventors

Osaka, Japan

Keisuke Shiono