Screening of metal oxide catalysts for carbon nanotubes and hydrogen production via catalytic decomposition of methane

S. H.S. Zein, A. R. Mohamed, S. P. Chai

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7 Citas (Scopus)

Resumen

A number of catalysts prepared from transition metals such as copper (Cu), iron (Fe), nickel (Ni), cobalt (Co) and manganese (Mn) on TiO2 support were tested for the decomposition of methane into hydrogen and carbon. These catalysts were used in the experiments without any pretreatment. The experimental results show that the activities of the metal-TiO2 catalysts decreased in the order of NiO/TiO2 > CoO/TiO2 > MnOx/TiO2 ≈ FeO/TiO2 ≈ CuO/TiO 2. NiO/TiO2 catalyst exhibited extremely high initial activity in the decomposition of methane. The optimum NiO doping on TiO 2 for the decomposition of methane were obtained at 20mol% NiO. The effective promoters for the catalyst was investigated using 15mol%M/20mol%NiO/ TiO2 catalysts (where M = MnOx, FeO, CoO and CuO). 15mol%MnOx/20mol%NiO/TiO2 was found to be an effective bimetallic catalyst for the catalytic decomposition of methane into hydrogen and carbon, giving higher catalytic activity, attractive carbon nanotube formed as well as longer catalytic lifetime.

Idioma originalEnglish
Páginas (desde-hasta)725-728
Número de páginas4
PublicaciónStudies in Surface Science and Catalysis
Volumen159
DOI
EstadoPublished - 2006
Publicado de forma externa

Nota bibliográfica

Funding Information:
The authors would like to acknowledge the financial support provided by the Academy of Sciences Malaysia under Scientific Advancement Grant Allocation (SAGA) (Project No. 6053001) and Universiti Sains Malaysia under USM short-term grant (Project No. 6035146).

ASJC Scopus Subject Areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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