Quantum Molecular Sieving Effects of H<sub>2</sub> and D<sub>2</sub> on Bundled and Nonbundled Single-Walled Carbon Nanotubes

DOI Web Site 被引用文献4件 参考文献21件
  • Hirotoshi Kagita
    Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
  • Tomonori Ohba
    Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
  • Toshihiko Fujimori
    Research Center for Exotic Nanocarbons, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
  • Hideki Tanaka
    Department of Chemical Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
  • Kenji Hata
    Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi Tsukuba, Ibaraki 305-8565, Japan
  • Sei-ichi Taira
    Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
  • Hirofumi Kanoh
    Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
  • Daiki Minami
    Research Center for Exotic Nanocarbons, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
  • Yoshiyuki Hattori
    Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda 386-8567, Japan
  • Tsutomu Itoh
    Chemical Analysis Center, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
  • Hyuma Masu
    Chemical Analysis Center, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
  • Morinobu Endo
    Research Center for Exotic Nanocarbons, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
  • Katsumi Kaneko
    Research Center for Exotic Nanocarbons, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan

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説明

The quantum molecular sieving effects of pore-structure-controlled single-walled carbon nanotubes (SWCNTs) for H2 and D2 were evaluated at 20, 40, and 77 K. The adsorption amounts of D2 were larger than those of H2. The lower the adsorption temperature, the greater the difference between the D2 and H2 adsorption amounts. Bundled SWCNTs with interstitial pores of diameter 0.6 nm gave the greatest adsorption difference between D2 and H2 per unit pore volume. Diffusion-dominated behavior was observed in the low-pressure region at 20 and 40 K as a result of lower mobility. Bundled SWCNTs with only interstitial pores provided a significant quantum molecular sieving as a result of strongly interacting potential wells.

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