Influence of preparation conditions on formation of crystalline phases of nickel sulfide

Authors
Olivas, A Cruz-Reyes, J Avalos, M Petranovskii, V Fuentes, S
Citation
A. Olivas et al., Influence of preparation conditions on formation of crystalline phases of nickel sulfide, MATER LETT, 38(2), 1999, pp. 141-144
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167577X → ACNP
Volume
38
Issue
2
Year of publication
1999
Pages
141 - 144
Database
ISI
SICI code
0167-577X(199901)38:2<141:IOPCOF>2.0.ZU;2-9
Abstract
Nickel sulfide catalysts obtained by homogeneous precipitation were prepare d by varying the homogenization time and the sulfiding temperature. The sur face area with respect to preparation conditions was studied by the BET met hod. Structure characterization studies by X-ray diffraction showed the for mation of two main crystalline phases (NiS1.03 and NiS-millerite). Their ap pearance depends on preparation conditions. Formation of millerite or NiS1. 03 occurs at the constant sulfiding temperature, when time of homogenizatio n of precursors increases. (C) 1999 Elsevier Science B.V. All rights reserv ed.