✦ LIBER ✦

Supported iridium catalysts: Comparison between resistance to sulphur poisoning and hydrodesulphurization properties

✍ Scribed by R. Frety; P.N. Da Silva; M. Guenin

Book ID: 104295826
Publisher: Elsevier Science
Year: 1990
Weight: 314 KB
Volume: 57
Category: Article
ISSN: 0166-9834
DOI: 10.1016/s0166-9834(00)80726-5

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✦ Synopsis

Iridium particles of 1 nm mean particle size were deposited on carriers of varying acidity. As the acidity of the support increases, the sulphur tolerance of the catalysts increases whereas the hydrodesulphurization ability decreases. A model is proposed in order to explain the results, in which metallic iridium particles, deposited on an acidic carrier, are electron deficient, leading to a weak Ir-S bond in the presence of hydrogen.

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