Method of producing carbon fibers
AssigneeShowa Denko K.K.
InventorsRyuji Yamamoto, Yuusuke Yamada, Takeshi Nakamura
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Abstract
Provided is a method of efficiently producing carbon fibers that can impart sufficient electrical or thermal conductivity to a material even by the addition of a small amount of the carbon fibers. The method of producing carbon fibers involves preparing a catalyst by allowing a carrier composed of silica-titania particles comprising silica in the core and titania in the shell of the particle to support a catalytic element, such as Fe element, Co element, Mo element, or V element, and bringing the catalyst into contact with a carbon element-containing material, such as methane, ethane, ethylene, or acetylene, under heating region at about 500 to 1000° C.
Claims14
A method of producing carbon fibers comprising:
- supporting a catalytic element on a carrier composed of silica-titania particles to prepare a catalyst, and
- bringing the catalyst into contact with a carbon element-containing material in a vapor phase.
Carbon fibers comprising silica-titania particles and a transition metal element, in which the carbon fibers have a number-average fiber diameter of 5 to 100 nm and an aspect ratio of 5 to 1000.
Dependencies are inferred from the claim text.