Surface and bulk investigation of ZSM5 and Al-MCM-41 using synchrotron XPS, XANES, and hexane cracking

P. A. Jalil, M. S. Kariapper, M. Faiz, Nouar Tabet, N. M. Hamdan, J. Diaz, Z. Hussain

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We present a comparative study of ZSM5 and Al-MCM-41 catalysts using spectroscopic and chemical techniques. The analysis of conventional and synchrotron XPS spectra of these catalysts reveals the presence of a topmost surface-related Si peak in addition to the bulk peak. XANES results suggest structural modification upon heating Al-MCM-41 at 500 °C. Depth-resolved XPS data show Al depletion from the surface of Al-MCM-41 in contrast to surface enrichment of Al in ZSM5. These surface modifications could be one of the reasons for the weak acidity of Al-MCM-41 in chemical reactions such as hexane cracking at different temperatures.

Original languageEnglish
Pages (from-to)159-165
Number of pages7
JournalApplied Catalysis A: General
Volume290
Issue number1-2
DOIs
Publication statusPublished - 18 Aug 2005
Externally publishedYes

Fingerprint

Hexanes
Multicarrier modulation
Hexane
Synchrotrons
X ray photoelectron spectroscopy
Catalysts
Acidity
Surface treatment
Chemical reactions
Heating
MCM-41
Temperature

Keywords

  • Al-MCM-41
  • XANES
  • ZSM5

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Surface and bulk investigation of ZSM5 and Al-MCM-41 using synchrotron XPS, XANES, and hexane cracking. / Jalil, P. A.; Kariapper, M. S.; Faiz, M.; Tabet, Nouar; Hamdan, N. M.; Diaz, J.; Hussain, Z.

In: Applied Catalysis A: General, Vol. 290, No. 1-2, 18.08.2005, p. 159-165.

Research output: Contribution to journalArticle

Jalil, P. A. ; Kariapper, M. S. ; Faiz, M. ; Tabet, Nouar ; Hamdan, N. M. ; Diaz, J. ; Hussain, Z. / Surface and bulk investigation of ZSM5 and Al-MCM-41 using synchrotron XPS, XANES, and hexane cracking. In: Applied Catalysis A: General. 2005 ; Vol. 290, No. 1-2. pp. 159-165.
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