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Catalyst particles instead of a few big, inactive types. Below these circumstances SWNTs nucleate and grow according to the Boudouard reaction. C.) in which tubes might continue to grow and coalesce into ropes. TX), Smith Ken A. (Katy, TX), Colbert Daniel T. TX), Nikolaev Pavel TX), Bronikowski Michael J. (Pasadena, CA), Bradley Robert K. cheap air max TX), Rohmund Frank (Huttlingen, DE) Assignee: William Marsh Rice College This software is a division of copending prior division application Ser. No. 09/830,642, submitted Jul. 371 national application of Worldwide Software Quantity PCT/US99/25702 filed on Nov. patent application Ser. Nos. sixty/106,917, filed on Nov. 3, 1998 60/114,588, filed Dec. 31, 1998 60/117,287, filed Jan. 26, 1999 and sixty/161,728, submitted Oct. A composition of matter comprising solitary wall carbon nanotubes wherein at least ninety five% of stated single wall carbon nanotubes have a diameter in the range of .6 nm to .eight nm. two. The composition of matter of claim one, whereby said solitary wall carbon nanotubes are aggregated as ropes. 3. The composition of matter of declare one, whereby said solitary wail carbon nanotubes comprise (five,5) single wall carbon nanotubes. 4. A product produced cheap nike air max by a procedure comprising: (a) supplying a gasoline stream comprising CO at superatmospheric stress (b) supplying a gaseous catalyst precursor stream comprising a gaseous catalyst precursor comprising atoms of a changeover metal selected from the team consisting of Team VI metals, Team VIII metals and mixtures thereof, stated gaseous catalyst precursor stream becoming supplied at a temperature below the decomposition temperature of said catalyst precursor (c) heating said gas cheap nike air max uk stream comprising CO to a temperature that is at minimum above the decomposition temperature of stated catalyst precursor and is sufficient to type solitary wall carbon nanotubes (d) mixing said heated gasoline stream comprising CO with stated gaseous catalyst precursor stream air max 90s cheap into a reaction combination in a mixing zone to rapidly warmth said catalyst precursor to a temperature that is (i) over the decomposition temperature of stated catalyst precursor, (ii) sufficient to market the formation of catalyst steel atom clusters and (iii) adequate to promote the initiation and growth of single wall carbon nanotubes and (e) forming solid goods comprising the solitary wall carbon nanotubes that are in a resulting gaseous stream, wherein at minimum 99% of atoms of the strong products are atoms of the single wall carbon nanotubes. 5. A product produced by a process comprising: (a) supplying a gasoline stream comprising CO at superatmospheric pressure (b) supplying a gaseous catalyst precursor stream comprising a gaseous catalyst precursor comprising atoms of a changeover metal chosen from the team consisting of Team VI metals, Group VIII metals and mixtures thereof, said gaseous catalyst precursor stream being supplied at a temperature nike air max 90 cheap below the decomposition temperature of stated catalyst precursor (c) heating stated gas stream comprising CO to a temperature that is at least over the decomposition temperature of said catalyst precursor and is sufficient to