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Resistance to sulphur poisoning of alumina‐supported iridium catalysts in toluene hydrogenation and methylcyclohexane dehydrogenation
Author(s) -
Reyes Patricio,
Fernández Javier,
Pecchi Gina,
Garcia Fierro Jose Luis
Publication year - 1998
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199809)73:1<1::aid-jctb908>3.0.co;2-n
Subject(s) - methylcyclohexane , dehydrogenation , catalysis , iridium , toluene , chemistry , sulfur , organic chemistry , thiophene , inorganic chemistry
Alumina‐supported iridium catalysts were prepared with highly dispersed iridium particles. The surface acidity of the catalysts was varied by addition of variable amounts of HCl to the impregnating solution and also by using an organometallic precursor. The catalysts were used in toluene hydrogenation and in methylcyclohexane dehydrogenation reactions and the thiotolerance level was measured with a feed containing 10 ppm of thiophene. In both reactions, it was found that the sulphur tolerance increases with increasing acidity of the support. © 1998 Society of Chemical Industry