Comparison of Fe/Al2O3 and Fe, Co/Al2O3 catalysts used for production of carbon nanotubes from acetylene by CCVD

被引：22
作者：
Kónya, Z
Vesselényi, I
Lázár, K
Kiss, J
Kiricsi, I
机构：
[1] Univ Szeged, Dept Appl & Environm Chem, H-6720 Szeged, Hungary
[2] Hungarian Acad Sci, Chem Res Ctr, Inst Isotope & Surface Chem, H-1525 Budapest, Hungary
[3] Hungarian Acad Sci, React Kinet Res Grp, H-6701 Szeged, Hungary
来源：
IEEE TRANSACTIONS ON NANOTECHNOLOGY | 2004年 / 3卷 / 01期
关键词：
iron containing alumina supported catalyst; nanotubes; Mossbauer spectroscopy; XPS spectroscopy;
D O I：
10.1109/TNANO.2004.824033
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Characterization of iron containing alumina supported catalysts was performed by transmission electron microcopy (TEM), Mossbauer, and XPS spectroscopy during formation of multiwall carbon nanotubes from acetylene at 1000 K. TEM images showed that carbon fibers (outer diameter is around 20-40 nm) were generated on Fe/Al2O3 samples while on the bimetallic Fe,Co/Al2O3 carbon nanotubes with an average diameter of 8-12 nm were formed. XPS spectra revealed that Fe-Co alloy formed during the interaction of Fe,Co/Al2O3 and acetylene at 1000 K. The formation of the bimetallic alloy was proven by Mossbauer spectroscopy as well.
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页码：73 / 79
页数：7
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