Title:
ENRICHMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2022/271103
Kind Code:
A3
Abstract:
The present invention relates to a method of carbon-13 isotope (13C) enrichment, the method comprising: (i) applying a voltage to a cathode located in a cathode chamber of an electrochemical cell; (ii) flowing a feed stream comprising CO2 to the cathode chamber, wherein the feed stream contacts the cathode causing reduction of CO2 to form one or more products; and (iii) unreacted CO2 leaving the cathode chamber, the unreacted CO2 being enriched in 13C as compared to the CO2 in the feed stream, wherein n(13CO2)/(n(13CO2)+ n(12CO2)) in the unreacted CO2 is higher than n(13CO2)/(n(13CO2)+ n(12CO2)) in the feed stream, n representing molar amount; wherein the voltage is about 1.5 V to about 5.5 V, and flow rate of the feed stream is selected to provide a residence time of about 0.1 seconds to about 5 seconds in the cathode chamber.
Inventors:
KOVALEV MIKHAIL (SG)
BARECKA MAGDA HELENA (SG)
REN HANGJUAN (SG)
AGER III JOEL WHEELER (US)
LAPKIN ALEXEI ALEXANDROVICH (GB)
BARECKA MAGDA HELENA (SG)
REN HANGJUAN (SG)
AGER III JOEL WHEELER (US)
LAPKIN ALEXEI ALEXANDROVICH (GB)
Application Number:
PCT/SG2022/050430
Publication Date:
March 23, 2023
Filing Date:
June 23, 2022
Export Citation:
Assignee:
CAMBRIDGE CENTRE FOR ADVANCED RES AND EDUCATION IN SINGAPORE LTD (SG)
UNIV CALIFORNIA (US)
THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIV OF CAMBRIDGE (GB)
UNIV CALIFORNIA (US)
THE CHANCELLOR MASTERS AND SCHOLARS OF THE UNIV OF CAMBRIDGE (GB)
International Classes:
B01D59/40; C01B32/05; C01B32/50; C25B3/26
Foreign References:
| US20200164337A1 | 2020-05-28 | |||
| US3627487A | 1971-12-14 | |||
| JP2009209017A | 2009-09-17 | |||
| EP3375907A1 | 2018-09-19 |
Attorney, Agent or Firm:
SPRUSON & FERGUSON (ASIA) PTE LTD (SG)
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