Title:
CARBON NANOFIBERS ENCAPSULTING METAL COBALT, AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2013/047782
Kind Code:
A1
Abstract:
These carbon nanofibers are produced by a gas-phase reaction of a carbon oxide-containing raw material gas using a metal oxide powder including a Co oxide as a catalyst. At least one selected from metal cobalt, a carbon-containing cobalt metal, and a cobalt-carbon compound is contained (encompassed) wrapped in the fibers. This carbon nanofiber production method has a step in which a mixed powder of Co oxide and Mg oxide is used as a catalyst, and carbon nanofibers are produced by a gas-phase reaction of a carbon oxide-containing raw material gas; and uses as the catalyst a mixed powder of CoO and MgO, obtained by hydrogen-reducing a mixed powder of Co3O4 and MgO using a reduction gas having a hydrogen concentration whereby metal cobalt is not generated.
Inventors:
HAGIWARA MASAHIRO (JP)
IMAI HIROYUKI (JP)
IMAI HIROYUKI (JP)
Application Number:
PCT/JP2012/075148
Publication Date:
April 04, 2013
Filing Date:
September 28, 2012
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
C01B31/02
Foreign References:
| JP2011168429A | 2011-09-01 | |||
| JP2005239481A | 2005-09-08 | |||
| JP2006152490A | 2006-06-15 | |||
| JP2005097708A | 2005-04-14 | |||
| JP2002115059A | 2002-04-19 |
Other References:
See also references of EP 2752390A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
Download PDF:
Claims:
Previous Patent: GREASE COMPOSITION FOR ROLLING BEARING, AND ROLLING BEARING
Next Patent: FILTER DEVICE FOR WASHING MACHINE
Next Patent: FILTER DEVICE FOR WASHING MACHINE