EXAFS study of the local structure of Ni in Ni-MoS2/C hydrodesulfurization catalysts

S.M.A.M. Bouwens, D.C. Koningsberger, V.H.J. Beer, de, S.P.A. Louwers, R. Prins

Research output: Contribution to journalArticleAcademicpeer-review

70 Citations (Scopus)
134 Downloads (Pure)

Abstract

To study the local structure of the Ni promoter atom, the Ni and Mo K edge EXAFS spectra of Ni-MoS2/C hydrodesulfurization catalyst were measured in an in-situ EXAFS cell at 77 K. The Ni atom is situated in a square pyramid of five S atoms at a distance of 2.21 Å from the S atoms. In addition an EXAFS contribution due to a Mo atom at 2.82 Å from the Ni atom could be identified. This local structure indicates that the Ni atoms are situated on top of the S4 squares at the MoS2 edges in millerite-type Ni sites. The Ni atoms are situated in the planes of the Mo atoms and not in the intercalation plane midway between successive MoS2 sandwich layers.
Original languageEnglish
Pages (from-to)273-283
Number of pages11
JournalCatalysis Letters
Volume5
Issue number3
DOIs
Publication statusPublished - 1990

Fingerprint

Dive into the research topics of 'EXAFS study of the local structure of Ni in Ni-MoS2/C hydrodesulfurization catalysts'. Together they form a unique fingerprint.

Cite this