CARBON STABLE ISOTOPE ENRICHMENT METHOD

Title:

CARBON STABLE ISOTOPE ENRICHMENT METHOD

Document Type and Number:

WIPO Patent Application WO/2022/044814

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a carbon stable isotope enrichment method with which it is possible to enrich 13C to a high concentration without performing isotope scrambling and without requiring safety measures against flammability and toxicity. The present invention provides a carbon stable isotope enrichment method that includes a distillation step for distilling raw-material carbon tetrafluoride that contains a plurality of types of carbon tetrafluoride stable isotope molecules in a distillation column group in which a plurality of distillation columns are cascade-connected, and enriching carbon tetrafluoride stable isotope molecules including 13C.

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Inventors:

SAKURAI HAYATO (JP)
KAMBE TAKASHI (JP)
IGARASHI TAKEHIRO (JP)

Application Number:

PCT/JP2021/029675

Publication Date:

March 03, 2022

Filing Date:

August 11, 2021

Export Citation:

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Assignee:

TAIYO NIPPON SANSO CORP (JP)

International Classes:

B01D59/04; C07C17/383; C07C19/08

Foreign References:

JPH06134261A	1994-05-17
JP2016131938A	2016-07-25
JP2019059650A	2019-04-18
JP2018164884A	2018-10-25

Other References:

B. B. MCLNTEER: "Separation Science and Technology", 1980, pages: 491 - 508

Attorney, Agent or Firm:

SHIGA INTERNATIONAL PATENT OFFICE (JP)

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