sp3-Linked Amorphous Carbon with Sulfonic Acid Groups as a Heterogeneous Acid Catalyst

Authors

  • Satoshi Suganuma,

    1. Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta-cho 4259-R3-33, Midori-ku, Yokohama, 226-8503 (Japan), Fax: (+81) 45-924-5381
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  • Dr. Kiyotaka Nakajima,

    1. Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta-cho 4259-R3-33, Midori-ku, Yokohama, 226-8503 (Japan), Fax: (+81) 45-924-5381
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  • Dr. Masaaki Kitano,

    1. Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta-cho 4259-R3-33, Midori-ku, Yokohama, 226-8503 (Japan), Fax: (+81) 45-924-5381
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  • Dr. Shigenobu Hayashi,

    1. Research Institute of Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Central 5, 1-1-1 Higashi, Tsukuba 305-856 (Japan)
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  • Prof. Michikazu Hara

    Corresponding author
    1. Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta-cho 4259-R3-33, Midori-ku, Yokohama, 226-8503 (Japan), Fax: (+81) 45-924-5381
    • Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta-cho 4259-R3-33, Midori-ku, Yokohama, 226-8503 (Japan), Fax: (+81) 45-924-5381
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Abstract

SO3H-bearing amorphous carbon prepared from polyvinyl chloride (PVC) is studied as a heterogeneous Brønsted acid catalyst. Sulfonation of partially carbonized PVC produces amorphous carbon consisting of small SO3H-bearing carbon sheets linked by sp3-based aliphatic hydrocarbons. This carbon material exhibits much higher catalytic performance in the hydrolysis of cellobiose than conventional heterogeneous Brønsted acid catalysts with SO3H groups, including SO3H-bearing amorphous carbon derived from cellulose. This can be attributed to a high density of SO3H groups and the fast diffusion of reactants and products enabled by a flexible carbon network.

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