Characterization by in situ EXAFS Spectroscopy of Pt/Al 2 O 3 and PtRe/Al 2 O 3 Catalysts under Reaction Conditions

The effects of the catalytic reforming of n-heptane on the metallic phase of Pt/Al 2 O 3 and PtRe/Al 2 O 3 catalysts have been studied by EXAFS spectroscopy. In both catalysts, a new platinum carbon bond is formed during the catalytic reaction, coming from the deposition of carbonaceous residues ove...

Full description

Saved in:
Bibliographic Details
Published in:Japanese Journal of Applied Physics 1993-01, Vol.32 (S2), p.439, Article 439
Main Authors: Caballero, Alfonso, Villain, Francoise, Dexpert, Herve, LePeltier, Fabienne, Lynch, John
Format: Article
Language:English
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effects of the catalytic reforming of n-heptane on the metallic phase of Pt/Al 2 O 3 and PtRe/Al 2 O 3 catalysts have been studied by EXAFS spectroscopy. In both catalysts, a new platinum carbon bond is formed during the catalytic reaction, coming from the deposition of carbonaceous residues over the metallic phase. However, in the case of the PtRe/Al 2 O 3 catalyst this bond is formed only at lower temperature and is accompanied by important changes in the structure of the metallic particles. All these results are consistent with the existence of a PtRe intermetallic phase in the bimetallic catalyst, which intercepts more efficiently the coke precursors.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAPS.32S2.439