STATE OF NI IN SULFIDED NINAY ZEOLITE

Authors
PAVLOVA LI
Citation
Li. Pavlova, STATE OF NI IN SULFIDED NINAY ZEOLITE, Kinetics and catalysis, 38(5), 1997, pp. 715-717
Citations number
15
Categorie Soggetti
Chemistry Physical
Journal title
Kinetics and catalysis → ACNP
ISSN journal
00231584
Volume
38
Issue
5
Year of publication
1997
Pages
715 - 717
Database
ISI
SICI code
0023-1584(1997)38:5<715:SONISN>2.0.ZU;2-J
Abstract
The state of Ni in NiNaY zeolite after its sulfidization with a mixtur e of H2S + H-2 at 120-500 degrees C was studied by X-ray diffraction. Amorphous NiS2 is formed at 120 degrees C and localized in the zeolite pores. As temperature is increased to 500 degrees C, alpha-NiS crysta llize from the amorphous phase on the surface of zeolite grains. The s ulfidization of nickel results in a decrease in the zeolite crystallin ity.