Title:
【発明の名称】θ-アルミナ粒子の生成法及び触媒支持体としての応用
Document Type and Number:
Japanese Patent JP2972854
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method of formation of θ-alumina particles which has large surface areas and is useful as a carrier of metal catalyst, and a catalyst carrier. SOLUTION: This method of formation of θ-alumina particles of 5-200nm diameter comprises spattering metal aluminum powder by electric discharge in argon gas, feeding the aluminum into a gaseous mixture of helium and water to form fine θ-alumina particles by coagulation while controlling the particle size by growing the particles by using metal tubes or reducing particle size by cooling with liquid nitrogen, and depositing the particles on a substrate, thus producing alumina particles of 20nm or less size which has a large surface area and is useful as a carrier of metal catalysts.
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Inventors:
MURAKAMI JUNICHI
OOI YUTAKA
YOSHIMURA KAZUNORI
IGARASHI KAZUO
TANEMURA SAKAE
GOTO MASAHIRO
OOI YUTAKA
YOSHIMURA KAZUNORI
IGARASHI KAZUO
TANEMURA SAKAE
GOTO MASAHIRO
Application Number:
JP32604796A
Publication Date:
November 08, 1999
Filing Date:
November 20, 1996
Export Citation:
Assignee:
KOGYO GIJUTSU INCHO
International Classes:
B01J32/00; B01J35/10; B01J37/00; C01F7/42; C23C14/00; B01J21/04; (IPC1-7): C01F7/42; B01J21/04; B01J32/00; B01J37/00; C23C14/00
Domestic Patent References:
| JP925571A |
Attorney, Agent or Firm:
Director, Nagoya Institute of Industrial Technology, AIST