B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/745 (2006.01) B01J 23/75 (2006.01) B01J 23/755 (2006.01) B01J 23/883 (2006.01) B01J 35/02 (2006.01) B01J 38/00 (2006.01) C01B 31/02 (2006.01)
Patent
CA 2551739
Disclosed is a catalyst structure (21) which enables to stably obtain a carbon nanotube having a desired shape and a long fiber length at high purity. Also disclosed is a method for producing a carbon nanotube (24) using the catalyst structure (21). The catalyst structure (21) is used for producing a carbon nanotube by vapor growth of a carbon crystal, and has a crystal growth surface (22) wherein the catalyst material is formed into a ring shape or a spiral shape. A method for producing a carbon nanotube (24) uses such a catalyst structure (21). The catalyst structure (21) is a columnar body having the crystal growth surface (22) as the upper surface, and at least a part of the lateral surface of the columnar body may preferably be composed of a non- catalytic material which substantially has no catalytic action on growth of the carbon crystal.
Est décrite une structure de catalyseur (21) qui permet d~obtenir de manière stable un nanotube en carbone ayant la forme désirée et une longueur de fibre longue de grande pureté. Est également décrit un procédé pour la production d~un nanotube en carbone (24) utilisant la structure du catalyseur (21). La structure du catalyseur (21) est utilisée pour fabriquer un nanotube en carbone par croissance en phase vapeur d~un cristal de carbone, et a une surface de croissance cristalline (22) sur laquelle se forme le matériau catalyseur en forme d~anneau ou en forme de spirale. Un procédé pour la fabrication d~un nanotube en carbone (24) utilise une telle structure de catalyseur (21). La structure de catalyseur (21) est un corps de type colonne ayant la surface de croissance cristalline (22) en tant que surface supérieure, et au moins une partie de la surface latérale du corps de type colonne est de préférence composée d~un matériau non catalytique qui n~a sensiblement aucune action catalytique sur la croissance du cristal de carbone.
Marks & Clerk
Sumitomo Electric Industries Ltd.
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