Deng Lidan先生らとの共同研究の成果がApplied Catalysis A誌(Elsevier)にAcceptされました。Our paper reporting propane dehydrogenation over supported Pt-Sn catalyst was published in Applied Catalysis A (Elsevier).

「Behavior of active species on Pt-Sn/SiO₂ catalyst during the dehydrogenation of propane and regeneration」Deng, Lidan; Zhou, Zijian; Shishido, Tetsuya

Applied Catalysis A: General, 2020, DOI:10.1016/j.apcata.2020.117826

Pt-Sn alloy nanoparticles supported on inert SiO₂ were prepared and used in the dehydrogenation of propane. The bulk/surface properties of Pt-Sn alloys during reactions and regeneration reactions and regenerations were investigated by transmission electron microscopy, X-ray diffraction, X-ray absorption fine structure, and X-ray photoelectron spectroscopy. Thermogravimetric analysis showed that small amounts of coke formed on the reacted catalysts, and the Pt-Sn interactions were also weakened during the reaction. Sn enrichment occurred on the catalyst surface after the first and second reaction cycles. Fortunately, a small amount of co-fed H₂ inhibited Sn segregation from Pt-Sn alloys and retained the active structure. The regeneration processes, especially the "oxidation-reduction" method, strengthened Pt-Sn interactions while concurrently burning off coke, allowing partial recovery of the catalytic performance. This work indicates the key role of the special geometric arrangements of Pt-Sn alloys in the dehydrogenation of propane.

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