Bimetallic nano-particles: Featuring structure and reactivity

Research output: Contribution to journalArticle

141 Citations (Scopus)

Abstract

Highly dispersed, oxide- or zeolite-supported bimetallic catalysts are widely used in the catalytic industry, such as in catalytic reforming, nitrogen industry and gas-to-liquid technology. The paper highlights the nano-sized bimetallic system in terms of correlation between structure and reactivity/selectivity promoted by the second metal. Opposite to the bulk alloys nano-sized bimetallic catalysts are extremely sensitive to the structure, morphology, valence state of the supporting oxide material in which the nano-particles are embedded. In this case, one of the less reducible components, which strongly interact with the supports, may stabilize the second, more noble metals, and thus the latter can be stabilized in highly dispersed state. Conversely, addition of noble metal to the hardly reducible component may facilitate reduction, which causes the retardation of the deactivation process of some hydrocarbon reaction. The future trend is the application of bimetallic nano-particles although careful consideration and experimentation should be taken to elucidate the structure of such type of catalyst. The various effects of bimetallic particles, such as particle size, metal/support interface, morphology and electronic effects, on the activity/selectivity in given catalytic reactions will be discussed.

Original languageEnglish
Pages (from-to)53-64
Number of pages12
JournalCatalysis Today
Volume101
Issue number2
DOIs
Publication statusPublished - Mar 30 2005

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Precious metals
Oxides
Metals
Catalytic reforming
Zeolites
Catalysts
Hydrocarbons
Catalyst supports
Industry
Nitrogen
Gases
Particle size
Liquids

Keywords

  • Activity/selectivity relationship
  • Bimetallic nano-structured catalysts

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Bimetallic nano-particles : Featuring structure and reactivity. / Guczi, L.

In: Catalysis Today, Vol. 101, No. 2, 30.03.2005, p. 53-64.

Research output: Contribution to journalArticle

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