Catalytic combustion of propane over Pt and Cu modified ZSM-5 zeolite catalysts

Ahmad Kalantar Neyestanaki*, Narendra Kumar, Lars Eric Lindfors

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)

Abstract

ZSM-5 zeolites were modified with copper and platinum by ion exchange and during the process of hydrothermal zeolite synthesis. The catalytic activity of the prepared Pt and Cu ZSM-5 zeolite catalysts was tested for complete oxidation of propane. It was observed that the mode of introduction of metals into the zeolite and the metal content influenced the catalytic activity. Copper introduced into the zeolite by ion exchange under basic conditions exhibited a high catalytic activity. Combustion efficiencies of 98.9 and 97.6% were achieved with the Cu ZSM-5 and Pt ZSM-5 catalysts containing 5.2 wt% Cu and 0.27 wt% Pt, respectively. The light-off temperature of the platinum containing catalyst was about 30 K lower than that of the 5.2 Cu ZSM-5 catalyst. The Cu ZSM-5 prepared during the process of hydrothermal synthesis exhibited a lower catalytic activity as compared to the ion exchanged Cu ZSM-5 catalysts. Temperature programmed desorption (TPD) measurements of CO and O2 were used to interpret the catalytic activity. The results indicated the important role of the extra lattice oxygen on these catalysts.

Original languageEnglish
Pages (from-to)690-696
Number of pages7
JournalFuel
Volume74
Issue number5
DOIs
Publication statusPublished - May 1995
MoE publication typeA1 Journal article-refereed

Keywords

  • catalytic combustion
  • propane
  • zeolites

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