Surface structure change of a [pt4(μ-CH3COO)8]/SiO2 catalyst active for the decomposition of formic acid

Wang Jae Chun, Keiichi Tomishige, Mamiko Hamakado, Yasuhiro Iwasawa, Kiyotaka Asakura

研究成果: Article査読

17 被引用数 (Scopus)

抄録

Pt4-cluster/SiO2catalyst, prepared from the [Pt4(μ-CH3COO)8] cluster, has shown remarkably high catalytic activity with 100% selectivity to CO2 and H2 for the decomposition of formic acid as compared with the Pt-particle/SiO2 catalyst. In order to elucidate the genesis and the mechanism for catalysis by Pt4-cluster/SiO2, the samples were characterized by kinetics, Pt LIII-edge extended X-ray absorption fine structure (EXAFS), and FTIR spectroscopy. EXAFS and IR data revealed that the surface structure of the catalyst changed from the tetramer to dimers during an induction period, then to monomers which were active for the catalysis. Eventually Pt particles were formed which were of much lower catalytic activity. The structural transformations of the Pt4-cluster/SiO2 catalyst are discussed in relation to the catalytic reaction profiles.

本文言語English
ページ(範囲)4161-4170
ページ数10
ジャーナルJournal of the Chemical Society, Faraday Transactions
91
22
DOI
出版ステータスPublished - 1995 12 1
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学

フィンガープリント

「Surface structure change of a [pt<sub>4</sub>(μ-CH<sub>3</sub>COO)<sub>8</sub>]/SiO<sub>2</sub> catalyst active for the decomposition of formic acid」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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