EXAFS STUDY IN-SITU (EXTENDED X-RAY-ABSOR PTION FINE-STRUCTURE) OF THE REFORMING REACTION WITH SULFIDED PT-AL2O3 AND PT-RE-AL2O3 SYSTEMS

Authors
BENSADDIK A BAZIN D DEXPERT H CABALLERO A LYNCH J DIDILLON B
Citation
A. Bensaddik et al., EXAFS STUDY IN-SITU (EXTENDED X-RAY-ABSOR PTION FINE-STRUCTURE) OF THE REFORMING REACTION WITH SULFIDED PT-AL2O3 AND PT-RE-AL2O3 SYSTEMS, Journal de physique. IV, 6(C4), 1996, pp. 493-500
Citations number
9
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
6
Issue
C4
Year of publication
1996
Pages
493 - 500
Database
ISI
SICI code
1155-4339(1996)6:C4<493:ESI(XP>2.0.ZU;2-8
Abstract
EXAFS has been used to follow in situ the structural evolution of sulf ided Pt/Al2O3-Cl and PtRe/Al2O3-Cl catalysts during the hydrocarbon re action (T = 500 degrees C, P(H-2) = 8 bars H-2 : n-C7H16 = 1:1 and T=3 00 degrees C, P(H-2) = 3 bars, H-2 : n-C7H16 = 1:1). The hydrocarbon c onversion was monitored, via on line analysis, with a gas chromatograp h. For the monometallic, we observe a sintering of the metal particles . In the case of sulfided PtRe/Al2O3-Cl catalysts no sintering of the metallic particles was observed.