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Growth of carbon nanotubes from waste blast furnace gases at atmospheric pressure
Author(s) -
Sagu Jagdeep S.,
Wijayantha K.G. Upul,
Holland Paul,
Bohm Mallika,
Bohm Siva,
Rout Tapan Kumar,
Bandulasena Hemaka
Publication year - 2016
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201600068
Subject(s) - carbon nanotube , chemical vapor deposition , atmospheric pressure , materials science , chemical engineering , carbon fibers , blast furnace , industrial gas , pollutant , atmospheric emissions , catalysis , environmental science , waste management , environmental chemistry , nanotechnology , chemistry , metallurgy , organic chemistry , composite material , meteorology , mechanical engineering , physics , atmospheric sciences , gas turbines , geology , composite number , engineering
Carbon emissions from industrial sources are of major global concern, especially contributions from the steel manufacturing process which accounts for the majority of emissions. Typical blast furnace gases consist of CO 2 (20‐25%), CO (20‐25%), H 2 (3‐5%) and N 2 (40‐50%) and trace amounts of other gases. It is demonstrated that gas mixtures with these compositions can be used at atmospheric pressure to grow carbon nanotubes (CNTs) by chemical vapor deposition (CVD) on to steel substrates, which act as catalysts for CNT growth. Computational modelling was used to investigate the CNT growth conditions inside the CVD chamber. The results show that industrial waste pollutant gases can be used to manufacture materials with significant commercial value, in this case CNTs.