Direct Oxidation of Propylene with Molecular Oxygen over Ti-Modified Sulfated Zirconia Catalyst, 1. Characterization of the Catalyst and Catalytic Performances |
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| Authors: | Kazuhisa Murata Kossi E Bere Takashi Hayakawa Satoshi Hamakawa Kunio Suzuki and Koichi Matano |
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| Affiliation: | (1) Department of Surface Chemistry, National Institute of Materials and Chemical Research, 1-1, Higashi, Tsukuba, Ibaraki, 305-8565, Japan;(2) Japan Chemical Industry Association, Kasumigaseki, Tokyo, 100, Japan |
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| Abstract: | Some zirconia-based catalysts were tested for the reaction of propylene in the presence of molecular O2 without any additive at 428 K under atmospheric pressure. The catalyst TiSZ, which was prepared by a direct impregnation of titanium sulfate on amorphous zirconia, was found to show the highest yields of oxygenated compounds such as propylene oxide, with C4-C6 hydrocarbons. Characterization of the catalysts, by using XRD, XPS, and NH3-TPD, exhibited that the catalytic performances were dependent on the surface acidity. |
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| Keywords: | Propylene molecular oxygen titanium-modified sulfated zirconia |
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