Osaka Gas Company Limited

Mitsubishi Heavy Industries Limited

Katsuhide Okimi

Ryoichi Nishida

Hitoshi Nishino

Haruyuki Nakaoka

Takeo Matsui

Norihisa Kobayashi

Akinori Yasutake

Toshihiko Setoguchi

Yuichi Fujioka

Yoshihiko Tsuchiyama

Mitsuaki Yamada

Katsuyuki Takahashi

Matsuhei Noda

Akihiro Hachiya

Norio Nagano

Disclosed are an iron-carbon composite in which 10 to 90% of the internal space of a nanoflake carbon tube or a nested multi-walled carbon nanotube is filled with iron carbide or iron; a carbonaceous material containing such iron-carbon composites; and a process for preparing the same. The iron-carbon composite is useful for electron emitting materials and other applications.

Iron-carbon composite, carbonaceous material comprising said iron-carbon composite and process for preparing the same

The invention has as an object proving a carbon nanomaterial fabrication method that can continuously mass-produce a high purity carbon a nanomaterial. The tube-shaped or fiber-shaped carbon nanomaterial having carbon as the main constituent is fabricated with a compound that includes carbon (raw material) and an additive that includes a metal by using a fluidized bed reactor.

Manufacturing method for a carbon nanomaterial, a manufacturing apparatus for a carbon nanomaterial, and manufacturing facility for a carbon nanomaterial

A fluorene derivative of high purity is produced by reacting fluorenone with phenoxyethanol in the presence of a sulfuric acid-thiol catalyst system, dissolving the reaction mixture in a lower aliphatic alcohol and adding water to the resulting solution for precipitation of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene [fluorene derivative]. A fluorene derivative of still higher purity is obtained by recrystallization from a lower aliphatic alcohol. In accordance with this invention, a fluorene derivative can be produced advantageously on a commercial scale without incurring any appreciable loss of fluorenone, in good yield, with high efficiency and in a reduced production time.

Method of preparing a fluorene derivative and the method of purifying

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Sakai, Japan

Katsuhide Okimi