Chemical stability of sulfate ions deposited on iron oxide |
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Authors: | Doo S. Park and Jae S. Lee |
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Affiliation: | (1) Department of Chemical Engineering, Pohang Institute of Science and Technology, P. O. Box 125, Pohang, S. Korea |
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Abstract: | Sulfate ions deposited on iron oxide were thermally stable up to ca. 770 K. When pyridine, ammonia, n-butane, and 1-butene were preadsorbed, however, they decomposed to generate gaseous SO2 at much lower temperatures due to the reaction between these molecules and sulfate ions. Implications of these findings in characterization and catalysis of this type of superacid catalyst are discussed.
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