Method for producing single walled carbon nanotubes
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United States of America Patent
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Apr 15, 2008
Grant Date -
Oct 7, 2004
app pub date -
Oct 20, 2003
filing date -
Jul 23, 2001
priority date (Note) -
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Abstract
A catalyst composition and method of use of the catalyst composition for producing single-walled carbon nanotubes (SWNTs). The catalyst is cobalt (Co) and molybdenum (Mo) on a silica support. The Mo occurs primarily as dispersed Mo oxide clusters on the support while the Co is primarily in an octahedral configuration in a CoMoO.sub.4-like phase disposed on the Mo oxide clusters. In the method, the catalyst is used and the process conditions manipulated in such a manner as to enable the diameters of the SWNTs to be substantially controlled.
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