CARBON NANOFIBERS ENCAPSULATING METAL COBALT, AND PRODUCTION METHOD THEREFOR

摘要

This carbon nanofiber is produced by a vapor phase reaction of a carbon oxide-containing raw material gas using a friend oxide powder including a Co oxide as a catalyst, wherein at least one type selected from metal cobalt, carbon-containing cobalt metals, and cobalt-carbon compounds is contained (encapsulated) in the fiber in a wrapped state. This method for producing a carbon nanofiber includes: producing a carbon nanofiber by, a vapor phase reaction of a carbon oxide-containing raw material gas using a mixed powder of a Co oxide and a Mg oxide as a catalyst, wherein a mixed powder of CoO and MgO, which is obtained by hydrogen-reducing a mixed powder of Co3O4 and MgO using a reduction gas having a hydrogen concentration in which metal cobalt is not generated, is used as the catalyst.

主权项

1. A carbon nanofiber that is produced by a vapor phase reaction of a carbon oxide-containing raw material gas using a metal oxide powder containing a Co oxide as a catalyst,
wherein at least one type selected from metal cobalt, carbon-containing cobalt metals, and cobalt-carbon compounds is contained (encapsulated) in the fiber in a wrapped state.