TWO-LAYER CATALYST, PROCESS FOR PREPARING SAME AND USE FOR THE MANUFACTURE OF NANOTUBES
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United States of America Patent
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Issued Date -
Jun 14, 2012
app pub date -
Aug 16, 2010
filing date -
Aug 17, 2009
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Abandoned
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Abstract
A catalyst material for preparing nanotubes, especially carbon nanotubes, said material being in the form of solid particles, said particles including a porous substrate supporting two superposed catalytic layers, a first layer, directly positioned on the substrate, including at least one transition metal from column VIB of the Periodic Table, preferably molybdenum, and a second catalytic layer, positioned on the first layer, comprising iron. Also, a process for preparing same and to a process for the synthesis of nanotubes using this catalyst material.
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