Low-temperature catalytic oxidation of multi-walled carbon nanotubes

Anne-Riikka Leino, Melinda Mohl, Jarmo Kukkola, Päivi Mäki-Arvela, Tommi Kokkonen, Andrey Shchukarev, Krisztian Kordas*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

20 Sitaatiot (Scopus)

Abstrakti

When in a pure form, carbon nanotubes are known to be stable in air up to ∼800 K making them attractive for a large variety of applications. In this work, we report a significant decrease of ignition temperature (in some cases occurring at ∼500 K) and a reduction in the apparent activation energy for oxidation in air as a result of impregnation with nanoparticles (<2 nm) of metal (Pt, Pd, Ni and Co) acetylacetonates or by decoration with corresponding oxides. Surprisingly, defects introduced by partial oxidation of the carbon nanotubes do not in practice have any influence on the enhancement of further oxidation. Reduction temperatures of metal oxides with H2 were close to those of other carbon supported catalyst materials. However, the carbon nanotubes showed a tendency for low temperature gasification in the presence of hydrogenation catalyst metals (Pt, Pd).

AlkuperäiskieliEnglanti
Sivut99-107
Sivumäärä9
JulkaisuCarbon
Vuosikerta57
DOI - pysyväislinkit
TilaJulkaistu - kesäk. 2013
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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