公开(公告)号：US20200164337A1

公开(公告)日：2020-05-28

申请号：US16514451

申请日：2019-07-17

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Do-Young Jeong ,  Lim Lee ,  Yonghee Kim ,  Hyounmin Park ,  Kwang-Hoon Ko ,  Taek-Soo Kim ,  Seong Yong Oh

IPC: B01J19/12 ,  C01B32/50 ,  C01B3/22 ,  C01B3/50 ,  C01B32/40 ,  F25J3/06

Abstract: The present disclosure relates to a method for separating a carbon isotope and a method for concentrating a carbon isotope using the same, the method for separating a carbon isotope including: cooling a formaldehyde gas to a temperature of from 190K to 250K; and obtaining a mixed gas and residual formaldehyde by photodissociating the cooled formaldehyde gas, the mixed gas including carbon dioxide containing a carbon isotope and hydrogen.

公开(公告)号：US11286161B2

公开(公告)日：2022-03-29

申请号：US16290531

申请日：2019-03-01

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Do-Young Jeong ,  Lim Lee ,  Yonghee Kim ,  Hyounmin Park ,  Yong-Ho Cha ,  Taek-Soo Kim

IPC: C01B5/02 ,  C07C1/04 ,  C01B32/40 ,  B01J19/12

Abstract: A process for isolating 17O from water and a process for concentrating 17O by using the same are provided. The process for isolating 17O from water includes: mixing 17O-containing water with formaldehyde to prepare an aqueous formaldehyde solution; heating the aqueous formaldehyde solution to generate a vapor mixture containing water vapor and formaldehyde vapor; and obtaining 17O-depleted water, residual formaldehyde, and a gas mixture containing hydrogen and 17O-enriched carbon monoxide, through photodissociating the vapor mixture. An 17O-enriched water production process includes: an operation of adding hydrogen to the gas mixture to induce a catalytic methanation reaction to synthesize methane (CH4) and 17O-enriched water (H217O) through methanation, the operation being carried out following the process for isolating 17O from water.

公开(公告)号：US11413596B2

公开(公告)日：2022-08-16

申请号：US16514451

申请日：2019-07-17

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Do-Young Jeong ,  Lim Lee ,  Yonghee Kim ,  Hyounmin Park ,  Kwang-Hoon Ko ,  Taek-Soo Kim ,  Seong Yong Oh

IPC: B01J19/12 ,  C01B32/50 ,  C01B3/22 ,  C01B3/50 ,  C01B32/40 ,  F25J3/06

Abstract: The present disclosure relates to a method for separating a carbon isotope and a method for concentrating a carbon isotope using the same, the method for separating a carbon isotope including: cooling a formaldehyde gas to a temperature of from 190K to 250K; and obtaining a mixed gas and residual formaldehyde by photodissociating the cooled formaldehyde gas, the mixed gas including carbon dioxide containing a carbon isotope and hydrogen.

公开(公告)号：US20200156938A1

公开(公告)日：2020-05-21

申请号：US16290531

申请日：2019-03-01

Applicant: KOREA ATOMIC ENERGY RESEARCH INSTITUTE

Inventor： Do-Young Jeong ,  Lim Lee ,  Yonghee Kim ,  Hyounmin Park ,  Yong-Ho Cha ,  Taek-Soo Kim

IPC: C01B5/02 ,  C07C1/04 ,  C01B32/40 ,  B01J19/12

Abstract: A process for isolating 17O from water and a process for concentrating 17O by using the same are provided. The process for isolating 17O from water includes: mixing 17O-containing water with formaldehyde to prepare an aqueous formaldehyde solution; heating the aqueous formaldehyde solution to generate a vapor mixture containing water vapor and formaldehyde vapor; and obtaining 17O-depleted water, residual formaldehyde, and a gas mixture containing hydrogen and 17O-enriched carbon monoxide, through photodissociating the vapor mixture. An 17O-enriched water production process includes: an operation of adding hydrogen to the gas mixture to induce a catalytic methanation reaction to synthesize methane (CH4) and 17O-enriched water (H217O) through methanation, the operation being carried out following the process for isolating 17O from water.