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- W2031087660 abstract "Abstract Pt-Ir/HY and Pt-Mg-Ir/Al 2 O 3 catalysts were studied and tested in the reaction of ring opening of decalin. The acidity of the alumina support was modified by addition of 3% Mg and the acidity of the zeolite by ion exchange with NH 4 Cl. The Pt content of the catalysts was fixed at 1% (mass basis) while the Ir content was adjusted between 0.1 and 0.6%. The catalysts were characterized by temperature programmed reduction, temperature programmed desorption of pyridine and FTIR of adsorbed CO. They were further tested with the reactions of cyclohexane dehydrogenation, cyclopentane hydrogenolysis and n-C 5 isomerization. It was found that the Pt-Ir/HY catalyst was substantially more acid than Pt-Mg-Ir/Al 2 O 3 . Increasing the Ir content produced an increase of the hydrogenolytic activity and a decrease of the dehydrogenating activity of both catalysts. The n-pentane isomerization reaction results revealed that in the case of the alumina catalyst increasing the Ir content promoted both the catalyst stability and the cracking selectivity to C 5 isomers. The opposite was found for the Pt-Ir/HY zeolite catalysts. The zeolite supported Pt-Ir catalysts performed better for decalin ring opening than those supported on alumina. Higher Ir content favored the formation of ring-opening products in all cases." @default.
- W2031087660 created "2016-06-24" @default.
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- W2031087660 date "2013-02-01" @default.
- W2031087660 modified "2023-10-07" @default.
- W2031087660 title "Pt-Mg-Ir/Al2O3 and Pt-Ir/HY zeolite catalysts for SRO of decalin. Influence of Ir content and support acidity" @default.
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- W2031087660 doi "https://doi.org/10.1016/j.apcata.2012.12.002" @default.
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