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- W1993336611 abstract "Sulfur dioxide (SO2) adsorption on a γ-alumina (Al2O3) catalyst was found to be affected by two factors: the number of hydroxyl groups present and the temperature of the catalyst. Sulfur dioxide chemisorbed more readily on a well-dehydrated surface. The SO2 uptake decreased as the temperature of the alumina catalyst was increased. At 600 °C SO2 underwent disproportionation to form aluminum sulfate [Al2(SO4)3] which could be thermally decomposed at 800 °C. The application of infrared spectroscopy disclosed that SO2 first adsorbed on Al2O3 in the form of a sulfite species (SO3) yielding an infrared band at 1060 cm−, which could be removed at 600 °C. SO2 also chemisorbed to yield a band at 1326 cm−1 at moderate surface coverage, which could be removed at 100 °C. In the presence of oxygen, SO2 could be oxidized on Al2O3 to form aluminum sulfate, as demonstrated by the formation of paired bands in the regions of 1400 and 1100 cm−1." @default.
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- W1993336611 date "1978-07-01" @default.
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- W1993336611 title "Infrared studies of SO2 on $gamma;-alumina" @default.
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- W1993336611 doi "https://doi.org/10.1016/0021-9517(78)90109-4" @default.
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