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High Precision Volumetric Gas Adsorption Apparatus

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Abstract

We have developed a new volumetric gas adsorption apparatus into which the dead volume measurement cell (dVd cell) is incorporated (cf. Fig. 1). The dVd cell measures continuously the change of dead volume during adsorption measurement. The dead volume at every step of adsorption measurement is used in calculation of adsorbed amount of nitrogen gas. Introduction of the dVd cell makes the level-control system of liquid nitrogen unnecessary, and enables the adsorption error due to the minute fluctuation of liquid–nitrogen level small. The sensitivity and reproducibility of our new adsorption apparatus have been examined using some certified materials (cf. Fig. 4).

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References

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Authors and Affiliations

  1. R&D Department, BEL Japan, Inc. YODOGAWA-KU, OSAKA, 532-0025, Japan

    Kazuyuki Nakai, Joji Sonoda, Haruo Iegami & Hiromitsu Naono

Authors
  1. Kazuyuki Nakai
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  2. Joji Sonoda
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  3. Haruo Iegami
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  4. Hiromitsu Naono
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Correspondence to Kazuyuki Nakai.

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Nakai, K., Sonoda, J., Iegami, H. et al. High Precision Volumetric Gas Adsorption Apparatus. Adsorption 11 (Suppl 1), 227–230 (2005). https://doi.org/10.1007/s10450-005-5928-1

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  • DOI: https://doi.org/10.1007/s10450-005-5928-1

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