The reaction of 1-butene and isobutane with hydrogen over Ru-γ-Al2O3 and γ-Al2O3 at 490 °C has been studied in order to clarify the reaction path of n-butane and hydrogen on the same catalyst. By feeling 1-butene, it has been proved that at low time factors the selectivity for the skeletal isomer (isobutene) is small, at the highest time factor this product is formed with significant selectivity together propylene and methane on Ru-Al2O3, 2-butenes reach selectivities from 99 to 82 mol % over both Ru-Al2O3 and γ-Al2O3. Isobutane yields isobutene, methane, ethane, propane over Ru-Al2O3, while over Al2O3 it gives very low conversion. A reaction path for the hydrogenolysis-dehydrogenation reaction of n-butane is proposed. The influence of chloride traces in the catalyst is briefly discussed.
A COMPREHENSIVE REACTION SCHEME FOR THE DEHYDROGENATION AND HYDROGENOLYSIS OF n-BUTANE, 1-BUTENE AND ISOBUTANE OVER SUPPORTED RUTHENIUM AT HIGH TEMPERATURE
SPADARO, Agatino Natale;CUM, Giampietro
1975-01-01
Abstract
The reaction of 1-butene and isobutane with hydrogen over Ru-γ-Al2O3 and γ-Al2O3 at 490 °C has been studied in order to clarify the reaction path of n-butane and hydrogen on the same catalyst. By feeling 1-butene, it has been proved that at low time factors the selectivity for the skeletal isomer (isobutene) is small, at the highest time factor this product is formed with significant selectivity together propylene and methane on Ru-Al2O3, 2-butenes reach selectivities from 99 to 82 mol % over both Ru-Al2O3 and γ-Al2O3. Isobutane yields isobutene, methane, ethane, propane over Ru-Al2O3, while over Al2O3 it gives very low conversion. A reaction path for the hydrogenolysis-dehydrogenation reaction of n-butane is proposed. The influence of chloride traces in the catalyst is briefly discussed.Pubblicazioni consigliate
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