Method of producing carbon nanostructure
a carbon nanotube and carbon nanotube technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, metal/metal-oxide/metal-hydroxide catalysts, etc., can solve the problem of difficult control of the shape of the catalyst particle, the inability to easily generate and the inability to produce carbon nanotubes with a large fiber length. problems, to achieve the effect of producing stably, forming efficien
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example 1
[0079](1) Making of Catalyst Base
[0080]In this example, a catalyst base was made by a method indicated in FIG. 1. Composite material 13 (FIG. 1(A)), which was obtained by inserting an Fe (iron) rod as catalyst material 11 having an outside diameter of 40 mm into an Ag (silver) pipe as non-catalyst material 12 having an outside diameter of 60 mm and an inside diameter of 40 mm, was subjected to wiredrawing with drawing dice 14 until an outside diameter thereof became 1.2 mm to obtain a wire 1 (FIG. 1(B)). Wire 1 was cut at every length of 1 m and bundled together to fill an Ag pipe as non-catalyst material 15 having an outside diameter of 60 mm and an inside diameter of 40 mm, while spacers of Ag were used to fill gaps to avoid generation of a cavity, to form composite material 16 (FIG. 1(C)). Composite material 16 was passed through drawing dice 14 for wiredrawing until a diameter thereof became 1.2 mm to obtain a wire 2 (FIG. 1(D)). The step of obtaining wire 2 from wire 1 was repe...
example 2
[0088](1) Making of Catalyst Base
[0089]In an Ag (silver) pipe having an outside diameter of 60 mm and an inside diameter of 50 mm, an Fe (iron) pipe having an outside diameter of 50 mm and an inside diameter of 45 mm was inserted, ard an Ag rod having an outside diameter of 45 mm was further inserted therein. A composite metal material obtained was subjected to wiredrawing with a drawing dice until an outside diameter thereof became 1.2 mm to obtain wire 1. Wire 1 was cut at every length of 1 m and bundled together to fill an Ag pipe having an outside diameter of 60 mm and an inside diameter of 40 mm, while spacers of Ag were used to fill gaps to avoid generation of a cavity, and the Ag pipe was subjected to wiredrawing with the drawing dice until a diameter thereof became 1.2 mm to obtain wire 2. The step of obtaining wire 2 from wire 1 was repeated and, finally, an aggregate having a diameter of 30 mm was obtained which was formed with a bundle of a plurality of catalyst structure...
example 3
[0095](1) Making of Catalyst Base
[0096]In this example, a catalyst base was made by a method shown in FIG. 2. That is, while rotating an Ag rod as non-catalyst material 201 having an outside diameter of 40 mm, Fe and Ag were concurrently deposited on a periphery of the Ag rod from deposition sources 202 and 203 (FIG. 2(A)) to form composite material 206 in a spiral shape having respective 10 layers of Fe as catalyst materials 204 each having a thickness of 1 μm and Ag layers as non-catalyst materials 205 each having a thickness of 5 μm (FIG. 2(B)). An Ag layer as non-catalyst material 207 was further formed to make an outside diameter of a periphery of a resulting composite material 208 become 60 mm (FIG. 2(C)).
[0097]Composite material 208 obtained was passed through drawing dice 209 for wiredrawing until an outside diameter thereof became 1.2 mm to obtain wire 1 (FIG. 2(D)). Wire 1 was cut at every length of 1 m and bundled together to fill an Ag pipe as non-catalyst material 210 h...
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