A characterization and catalytic study of Y zeolite supported Ni/Cu bimetallics

A wide range of CuNiNaY andCuNiKY zeolites were prepared by ion exchange. The location of both Ni 2+ and Cu 2+ cations within the zeolite framework was monitored after various stages of thermal treatment and the reduction process of the transition metal ions in a flowing hydrogen atmosphere was inve...

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Bibliographic Details
Published in:Canadian journal of chemistry 1990-09, Vol.68 (9), p.1471-1476
Main Authors: Coughlan, Brendan, Keane, Mark A
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Ion-exchange
Surface physical chemistry
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Summary:A wide range of CuNiNaY andCuNiKY zeolites were prepared by ion exchange. The location of both Ni 2+ and Cu 2+ cations within the zeolite framework was monitored after various stages of thermal treatment and the reduction process of the transition metal ions in a flowing hydrogen atmosphere was investigated and correlated with reduction time and temperature. The metallic phase generated on reduction was characterized by X-ray diffraction line broadening. The catalytic activity of the reduced zeolites in the hydrogenation of benzene is discussed in the light of these physical characterizations.Keywords: zeolites, supported Ni/Cu bimetals, cation location, crystallite size, catalysis.
ISSN:0008-4042
1480-3291
DOI:10.1139/v90-225