Adsorption of propene, benzene, their mixtures and cumene on H-beta zeolites studied by IR and UV-VIS spectroscopy

C. Flego, I. Kiricsi, C. Perego, G. Bellussi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

H-beta zeolite proved to be an active and selective catalyst for alkylation of benzene withpropene. In situ spectroscopic methods were applied to follow the formation and the evolution of surface intermediates and products. It was found that when benzene is take alone on the zeolite surface, its adsorption is reversible up to 473 K. On the contrary propene propene undergoes to several transformations even at 295 K. Isopropylbenzenes behaves as propene, giving the same intermediates and products by decomposition at higher temperatures. Isopropyl cations formed upon chemisorption of propene on Broensted acid sites are the key intermediates for the alkylation reaction and are responsible for the faster deactivation via unsatured carbenium ion formation.

Original languageEnglish
Pages (from-to)405-412
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume94
Issue numberC
DOIs
Publication statusPublished - 1995

Fingerprint

Zeolites
alkylation
Benzene
Ultraviolet spectroscopy
zeolites
Propylene
benzene
Adsorption
adsorption
Alkylation
products
deactivation
chemisorption
spectroscopy
decomposition
catalysts
cations
acids
Chemisorption
Cations

ASJC Scopus subject areas

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

Cite this

Adsorption of propene, benzene, their mixtures and cumene on H-beta zeolites studied by IR and UV-VIS spectroscopy. / Flego, C.; Kiricsi, I.; Perego, C.; Bellussi, G.

In: Studies in Surface Science and Catalysis, Vol. 94, No. C, 1995, p. 405-412.

Research output: Contribution to journalArticle

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