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Influence of the catalyst drying process and catalyst support particle size on the carbon nanotubes produced by CCVD
Author(s) -
Mionic’︁ Marijana,
Alexander Duncan T. L.,
Forró László,
Magrez Arnaud
Publication year - 2008
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200879614
Subject(s) - catalysis , carbon nanotube , economies of agglomeration , acetylene , chemical engineering , particle size , materials science , chemical vapor deposition , tube furnace , nanoparticle , yield (engineering) , carbon fibers , carbon nanotube supported catalyst , particle (ecology) , catalyst support , nanotechnology , chemistry , organic chemistry , metallurgy , composite material , carbon nanofiber , composite number , oceanography , geology , engineering
Catalytic Chemical Vapour Deposition (CCVD) is considered as the most suitable technique for the large scale and low‐cost production of multiwalled carbon nanotubes. We have studied the effect of the preparation process, and of the support particle size on the catalyst efficiency, conversion yield of the carbon source and diameter of the nanotubes produced. When 50 nm calcite CaCO 3 particles support the Fe 2 Co nanoparticles and when the catalyst is freeze dried to avoid the particles agglomeration, 85% of acetylene is converted into MWCNTs; and by using our rotary tube furnace, 1200 g of MWCNTs can be produced per day. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)