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Shigeru Ikeda, Satoru Ishino, Takashi Harada, Natsumi Okamoto, Takao Sakata, Hirotaro Mori, Susumu Kuwabata, Tsukasa Torimoto and Michio Matsumura Ligand-Free Platinum Nanoparticles Encapsulated in a Hollow Porous Carbon Shell as a Highly Active Heterogeneous Hydrogenation Catalyst Angewandte Chemie International Edition 45

Version of Record online: 28 SEP 2006 | DOI: 10.1002/anie.200602700

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Wrapped up but still active: A platinum nanoparticle that is 2.2 nm in diameter and not coated by any stabilizing agent can be encapsulated in a hollow carbon shell 30–40 nm in diameter with a micro- to nanoporous wall structure (see picture). This encapsulated nanoparticle acts as an efficient and recyclable heterogeneous catalyst for various liquid-phase hydrogenation reactions.

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