Korea Atomic Energy Research Institute

Lim Lee

Taek-Soo Kim

Yonghee Kim

Do-Young Jeong

Hyounmin Park

Kwang-Hoon Ko

Yong-Ho Cha

Seong Yong Oh

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.

Method for separating carbon isotope and method for concentrating carbon isotope using the same

A process for isolatingO from water and a process for concentratingO by using the same are provided. The process for isolatingO from water includes: mixingO-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 obtainingO-depleted water, residual formaldehyde, and a gas mixture containing hydrogen andO-enriched carbon monoxide, through photodissociating the vapor mixture. AnO-enriched water production process includes: an operation of adding hydrogen to the gas mixture to induce a catalytic methanation reaction to synthesize methane (CH) andO-enriched water (HO) through methanation, the operation being carried out following the process for isolatingO from water.

Process for isolating 170 isotope from water and process for concentrating 170 isotope using the same

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Daejeon, South Korea

Lim Lee