Method for preparing high-abundance carbon-13 isotopes using carbon dioxide as a medium

A carbon dioxide, high-abundance technology, applied in the separation of different isotopic elements, chemical instruments and methods, carbon preparation/purification, etc. Chemical amplification, low cost, high flow effect

Active Publication Date: 2021-01-19
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above technologies are all monopolized by relevant countries, and my country has not yet realized the industrial production of high-abundance carbon-13 isotope products

Method used

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  • Method for preparing high-abundance carbon-13 isotopes using carbon dioxide as a medium
  • Method for preparing high-abundance carbon-13 isotopes using carbon dioxide as a medium
  • Method for preparing high-abundance carbon-13 isotopes using carbon dioxide as a medium

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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0018] It should also be noted that the text may provide examples of parameters that include specific values, but these parameters need not be exactly equal to the corresponding values, but may approximate the corresponding values ​​within acceptable error tolerances or design constraints. The directional terms mentioned in the embodiments, such as "up", "down", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, and are not intended to limit the present invention protected range.

[0019] In the following description, some specific embodiments are only for the purpose of description, and should not be construed as limiting the present invention in any way, but are only examples o...

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Abstract

The invention discloses a method for preparing a high-abundance carbon-13 isotope by taking carbon dioxide as a medium. The method comprises the following steps: taking natural abundance carbon dioxide as a raw material, and carrying out a first gas diffusion cascade; obtaining carbon dioxide of which the carbon-13 isotope abundance is higher than 45% at the heavy fraction end of the first gas diffusion cascade, supplying the carbon dioxide serving as a supply material of a second gas diffusion cascade into second gas diffusion cascade, and obtaining a carbon dioxide product of which the carbon-13 isotope abundance is higher than 90% at the light fraction end of the second gas diffusion cascade; wherein the first gas diffusion cascade and the second gas diffusion cascade are both in relative abundance matching cascade. The method is realized based on gas diffusion cascading, has the characteristic of large flow, and is convenient for chemical amplification. And the working medium carbon dioxide is low in cost, non-toxic and non-combustible, and has no chemical reaction or adsorption / desorption link in the gas diffusion separation process, so that the safety and the product purity are improved. The method is used for preparing the high-abundance carbon-13 isotope and has technical feasibility.

Description

technical field [0001] The invention belongs to the technical field of isotope separation, in particular to a carbon dioxide (chemical formula CO 2 ) as a medium for the preparation of high-abundance carbon-13 isotopes. Background technique [0002] Carbon is an essential part of organic compounds and constitutes the carbon cycle of the biosphere. Its stable isotopes are widely used in medical, agricultural, environmental, food and other fields, and have considerable potential demand. Carbon stable isotopes are mainly used in isotope tracer technology, and the specific application method is carbon-13 isotope-labeled compounds. There are many types of related products on the market and the demand is huge. Compared with carbon-14 isotope, carbon-13 isotope does not have any radioactivity, so it has a great advantage in being used for medical diagnosis related to human body. In medical diagnosis, the most important application of carbon-13 isotope is the detection of Helicoba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D59/10C01B32/05
CPCB01D59/10C01B32/05
Inventor 周明胜裴根李俊杰孙旺
Owner TSINGHUA UNIV
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