Title:
MANUFACTURE OF COMPOSITE FINE PARTICLE OF METAL AND CARBON
Document Type and Number:
Japanese Patent JP3081915
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make it possible to easily synthesize a composite fine particle by soaking a metal plate electrode and a counter electrode, which are to be installed on a discharge working device, in an organic solvent containing carbon and causing an electric discharge to take place between the electrodes.
SOLUTION: Various kinds of metal plates such as of iron, cobalt, niobium, platinum or the like are used as raw metal materials, and copper, graphite, brass, copper tungsten or the like as a metal with low electric resistance is used as an opposite electrode in the form of a bar or a cylinder. The metal plate and the opposite electrode are used by soaking both of them in an organic solvent containing carbon of either of aliphatic hydrocarbons such as hexane or the like, aromatic hydrocarbons such as benzene or the like, univalent or polyvalent alcohols such as methanol or the like, ethers such as diethylether or the like, fatty acids, ketones or aliphatic amines or the like, or an organic solvent of a mixture of the above components. An electric discharge between the metal electrode and the counter electrode is caused to take, place by using a discharge working machine or the like. The composite fine particle of a metal and carbon can be easily separated by filtering a solvent containing this product after the completion of the discharge. Thus, it is possible to efficiently manufacture a fine metal particle coated with a carbonaceous material by an extremely simple method.
Inventors:
Kazuhisa Murata
Application Number:
JP28298697A
Publication Date:
August 28, 2000
Filing Date:
September 30, 1997
Export Citation:
Assignee:
Director of Industrial Technology
International Classes:
C01B31/02; B01J19/08; B22F9/02; C01B31/30; (IPC1-7): B01J19/08; C01B31/02
Attorney, Agent or Firm:
220000390 Director, Institute of Materials Science and Technology, AIST