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Title:
OXYGEN ISOTOPE SEPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/149499
Kind Code:
A1
Abstract:
An oxygen isotope separation method that separates 18O2 and 16O2, said method comprising: an adsorption step in which a gas mixture containing 18O2 and 16O2 is passed through an adsorbent that is -143°C or less, thereby causing the 18O2 to be adsorbed onto the adsorbent and storing unadsorbed gas in a first tank; and a desorption step in which the temperature of the adsorbent is increased, thereby desorbing the gas adsorbed onto the adsorbent and storing the gas in a second tank, wherein the average pore size of the adsorbent determined using nitrogen adsorption measurement is 0.35-0.7 nm.

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Inventors:
KANEKO KATSUMI (JP)
UJJAIN SANJEEV KUMAR (JP)
AHUJA PREETY (JP)
MURATA KATSUYUKI (JP)
Application Number:
PCT/JP2021/048288
Publication Date:
July 14, 2022
Filing Date:
December 24, 2021
Export Citation:
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Assignee:
UNIV SHINSHU (JP)
KOTOBUKI HOLDINGS CO LTD (JP)
International Classes:
B01J20/18; B01D59/26
Foreign References:
JP2006007004A2006-01-12
JP2002159830A2002-06-04
JP2005262208A2005-09-29
JP2004230267A2004-08-19
JP2004230268A2004-08-19
JPH10128071A1998-05-19
JPS61287429A1986-12-17
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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