XAFS study on the sulfidation mechanisms of Co-Mo catalysts supported on activated carbon and alumina: effect of complexing agent

Citation
K. Tsuji et al., XAFS study on the sulfidation mechanisms of Co-Mo catalysts supported on activated carbon and alumina: effect of complexing agent, J SYNCHROTR, 8, 2001, pp. 651-653
Citations number
3
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF SYNCHROTRON RADIATION
ISSN journal
0909-0495 → ACNP
Volume
8
Year of publication
2001
Part
2
Pages
651 - 653
Database
ISI
SICI code
0909-0495(200103)8:<651:XSOTSM>2.0.ZU;2-Z
Abstract
The effect of nitrilotriacetic acid (NTA) as a complexing agent on the sulf idation mechanisms of Co-Mo catalysts supported on activated carbon and alu mina was examined by the XAFS technique. The XAFS results revealed that NTA interacted with Co atoms and formed the Co-NTA interaction, while it showe d almost no influence on the local structures around Mo atoms. The Co-NTA i nteraction suppressed the aggregation of cobalt atoms and the interaction b etween cobalt and alumina during sulfiding, and consequently promoted the f ormation of the Co-Mo-S phase.