Comparison of Fe/Al<tex>$_2$</tex>O<tex>$_3$</tex>and Fe, Co/Al<tex>$_2$</tex>O<tex>$_3$</tex>Catalysts Used for Production of Carbon Nanotubes From Acetylene by CCVD
نویسندگان
چکیده
منابع مشابه
Synthesis, characterization, and stability of Fe-MCM-41 for production of carbon nanotubes by acetylene pyrolysis.
Fe-substituted MCM-41 molecular sieves with ca. 1, 2, and 3 wt % Fe were synthesized hydrothermally using different sources of colloidal silica (HiSil and Cab-O-Sil) and characterized by ICP, XRD, N2 physisorption, UV-vis, EPR, TPR, and X-ray absorption. Catalysts synthesized from Cab-O-Sil showed higher structural order and stability than those from HiSil. The local environment of Fe in the me...
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facilitating lexical access for the fluent production of speech
the hypothesis is that recent and frequent exposure to lexical items leads to a more fluent production of speech in terms of rate of speech. to test the hypothesis , a one- way anova experimental design was carried out. 24 senior student of efl participated in a one-way interview test. data analyses revealed that those who were exposed frequently to the lexical items over a week prior to inte...
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ژورنال
عنوان ژورنال: IEEE Transactions On Nanotechnology
سال: 2004
ISSN: 1536-125X
DOI: 10.1109/tnano.2004.824033