Evolution of crystalline phases in nickel-tungsten sulfide catalysts

Authors
Olivas, A Avalos, M Fuentes, S
Citation
A. Olivas et al., Evolution of crystalline phases in nickel-tungsten sulfide catalysts, MATER LETT, 43(1-2), 2000, pp. 1-5
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167577X → ACNP
Volume
43
Issue
1-2
Year of publication
2000
Pages
1 - 5
Database
ISI
SICI code
0167-577X(200003)43:1-2<1:EOCPIN>2.0.ZU;2-5
Abstract
Unsupported Ni-W sulfide catalysts were prepared employing ammonium thiotun gstate complexes and nickel nitrate as metal-sulfide precursors. Structural characterization was carried out by XRD and HRTEM measurements. XRD patter ns show crystallinity enhancement of WS, particles as the W content in the mixed catalysts was decreased. HRTEM demonstrates that WS2 layers start to coat NiS particles when the amount of Ni was increased. (C) 2000 Elsevier S cience B.V. All rights reserved.