FTIR characterization of Ru/SiO2 catalyst for ammonia synthesis

Date
1999-05-04
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Source Title
Journal of Molecular Structure
Print ISSN
0022-2860
Electronic ISSN
Publisher
Elsevier
Volume
480-481
Issue
Pages
241 - 245
Language
English
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Abstract

Carbon monoxide adsorption on a Ru/SiO2 catalyst was followed by IR spectroscopy to investigate the active sites. Using this catalyst, ammonia synthesis was achieved at 3508C in an N2/H2 gas mixture (N2/H2 < 3 : 1) for different reaction times. In addition to NH3 other NHx (x 1,2) species were also observed. CO adsorption after NH3 production was also performed to investigate the change in nature of the active sites. Based on the experimental evidence participation of Ru0 sites in ammonia synthesis was confirmed and a partial oxidation of the reduced Ru sites during the synthesis was observed. q 1999 Elsevier Science B.V. All rights reserved.

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