Middle pressure methane conversion into C2 hydrocarbons on supported Pt-Co catalysts

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4 Citations (Scopus)

Abstract

Pt-Co bimetallic catalysts were prepared by incipient wetness technique on alumina or NaY zeolite and were characterized by XRF, XRD, TPR, CO chemisorption and X-ray photoelectron spectroscopy. Methane conversion to higher hydrocarbons was investigated in a flow system by high temperature one-step, constant flow mode at 750°C and by two-step low temperature pulse mode at 250°C under non-oxidative conditions. Catalytic activity in oxygen-free transformations at atmospheric pressure is stable only for a short time. The simultaneous use of higher pressure and high temperature weakens the poisoning effect and makes the process possible to form primarily ethane (and ethene) which is predicted from thermodynamic calculations. The nature of support also significantly affects the amount of C2+ products, which can be attributed to structural differences of metal particles (location, reducibility, dispersion).

Original languageEnglish
Pages (from-to)601-606
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume147
Publication statusPublished - 2004

Fingerprint

Methane
Hydrocarbons
methane
hydrocarbons
catalysts
Catalysts
poisoning
metal particles
ethane
chemisorption
moisture content
catalytic activity
Zeolites
atmospheric pressure
Ethane
aluminum oxides
Aluminum Oxide
photoelectron spectroscopy
Carbon Monoxide
Chemisorption

ASJC Scopus subject areas

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

Cite this

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abstract = "Pt-Co bimetallic catalysts were prepared by incipient wetness technique on alumina or NaY zeolite and were characterized by XRF, XRD, TPR, CO chemisorption and X-ray photoelectron spectroscopy. Methane conversion to higher hydrocarbons was investigated in a flow system by high temperature one-step, constant flow mode at 750°C and by two-step low temperature pulse mode at 250°C under non-oxidative conditions. Catalytic activity in oxygen-free transformations at atmospheric pressure is stable only for a short time. The simultaneous use of higher pressure and high temperature weakens the poisoning effect and makes the process possible to form primarily ethane (and ethene) which is predicted from thermodynamic calculations. The nature of support also significantly affects the amount of C2+ products, which can be attributed to structural differences of metal particles (location, reducibility, dispersion).",
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AU - Borkó, L.

AU - Guczi, L.

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