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Method for separating carbon isotope and method for concentrating carbon isotope using the same
US11413596B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11413596-B2 |
| Application number | US-201916514451-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 17, 2019 |
| Priority date | Nov 27, 2018 |
| Publication date | Aug 16, 2022 |
| Grant date | Aug 16, 2022 |
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- Title
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Abstract
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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.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for separating a carbon isotope ( 13 C) comprising: 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 monoxide containing the carbon isotope ( 13 C) and hydrogen wherein a wavenumber of a photodissociation laser at the time of the photodissociating is 28396.1 cm −1 , 28401.3 cm −1 or a combination thereof. 2. The method of claim 1 , wherein the cooling is performed by a cooling bath or a chiller including a mixture of ethanol and dry ice. 3. The method of claim 1 , wherein the photodissociating is performed under a pressure of 0.01 to 5 Torr. 4. The method of claim 1 , wherein the photodissociation laser used at the time of the photodissociating is an optical fiber laser. 5. The method of claim 1 , further comprising: after the obtaining of the mixed gas and the residual formaldehyde, the mixed gas including carbon monoxide containing the carbon isotope ( 13 C) and hydrogen, separating the residual formaldehyde by cooling and condensing the mixed gas and the residual formaldehyde. 6. The method of claim 5 , wherein the cooling and condensing is performed at a temperature of 181K (−92° C.) or less. 7. A method for concentrating a carbon isotope ( 13 C) comprising: obtaining the mixed gas in which carbon monoxide containing the carbon isotope ( 13 C) and hydrogen are included, from formaldehyde by the method for separating the carbon isotope ( 13 C) of claim 1 .
Assignees
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Classifications
Carbon monoxide · CPC title
separation of carbon monoxide (production of carbon monoxide containing gas in general C01B32/40, C10J, C10K) · CPC title
- C01B3/22Primary
by decomposition of gaseous or liquid organic compounds · CPC title
at low temperatures · CPC title
Purification by cryogenic separation · CPC title
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- What does patent US11413596B2 cover?
- 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 dioxi…
- Who is the assignee on this patent?
- Korea Atomic Energy Res
- What technology area does this patent fall under?
- Primary CPC classification C01B3/22. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 16 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).