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Iodine vapor loading cobalt coordination polymer material, preparation method and application thereof

A technology of coordination polymers and loading materials, applied in separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of expensive materials, low efficiency recovery, etc., and achieve good repeatability, fast capture, and simple process Effect

Active Publication Date: 2019-03-08
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a cobalt coordination polymer iodine vapor load material and its preparation method and application, which solves the problem of existing capture I 2 Problems with expensive materials and inefficient recovery

Method used

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  • Iodine vapor loading cobalt coordination polymer material, preparation method and application thereof
  • Iodine vapor loading cobalt coordination polymer material, preparation method and application thereof
  • Iodine vapor loading cobalt coordination polymer material, preparation method and application thereof

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Embodiment 1

[0040] A preparation method of a cobalt coordination polymer iodine vapor loading material, comprising the following steps:

[0041] 1) According to the molar ratio of cobalt nitrate, thiophene-2,5-dicarboxylic acid and DMF of 10:10:1, weigh 54.746mg cobalt nitrate, namely 0.2mmol cobalt nitrate, 34.4mg thiophene-2,5-dicarboxylic acid Carboxylic acid is 0.2mmol thiophene-2,5-dicarboxylic acid and 10mL DMF solution is 0.02mmolDMF;

[0042] 2) dissolving cobalt nitrate in the DMF solution, moving the solution into the reactor, and then adding thiophene-2,5-dicarboxylic acid into the reactor;

[0043] 3) Seal the reaction kettle, keep the temperature at 373K for 48h, then slowly cool to room temperature, filter and wash with DMF solution to obtain purple transparent flaky crystals, which are Co coordination polymers.

[0044] The present invention uses thiophene-2,5-dicarboxylic acid as a ligand and cobalt nitrate to obtain a cobalt coordination polymer through a solvothermal me...

Embodiment 2

[0046] A preparation method of a cobalt coordination polymer iodine vapor loading material, comprising the following steps:

[0047] 1) According to the molar ratio of cobalt nitrate, thiophene-2,5-dicarboxylic acid and DMF as 10:10:1, weigh 82.119mg cobalt nitrate, namely 0.3mmol cobalt nitrate, 51.6mg thiophene-2,5-dicarboxylic acid Carboxylic acid is 0.3mmol thiophene-2,5-dicarboxylic acid and 15mL DMF solution is 0.03mmolDMF;

[0048] 2) dissolving cobalt nitrate in the DMF solution, moving the solution into the reactor, and then adding thiophene-2,5-dicarboxylic acid into the reactor;

[0049] 3) Seal the reaction kettle, keep the temperature at 373K for 48h, then slowly cool to room temperature, filter and wash with DMF solution to obtain purple transparent flaky crystals, which are Co coordination polymers.

Embodiment 3

[0051] A preparation method of a cobalt coordination polymer iodine vapor loading material, comprising the following steps:

[0052] 1) According to the molar ratio of cobalt nitrate, thiophene-2,5-dicarboxylic acid and DMF of 10:10:1, weigh 109.492mg cobalt nitrate, namely 0.4mmol cobalt nitrate, 68.8mg thiophene-2,5-dicarboxylic acid Carboxylic acid is 0.4mmol thiophene-2,5-dicarboxylic acid and 20mL DMF solution is 0.04mmolDMF;

[0053] 2) dissolving cobalt nitrate in the DMF solution, moving the solution into the reactor, and then adding thiophene-2,5-dicarboxylic acid into the reactor;

[0054] 3) Seal the reaction kettle, keep the temperature at 373K for 48h, then slowly cool to room temperature, filter and wash with DMF solution to obtain purple transparent flaky crystals, which are Co coordination polymers.

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Abstract

The invention discloses an iodine vapor loading cobalt coordination polymer material, a preparation method and application thereof, and belongs to the technical field of coordination complex preparation. Space groups of the iodine vapor loading cobalt coordination polymer material are P2 1 / c. The iodine vapor loading cobalt coordination polymer material is prepared by reaction of thiophene-2,5-dicarboxylic acid ligand and Co<2+> soluble salt, and is represented in a chemical formula as [Co3(tdc)3(DMF)3] DMF, and each of asymmetric units comprises three Co<2+> ions, three thiophene-2,5-dicarboxylic acid ions and three coordinated DMF molecules. Proved by experiments, the iodine vapor loading cobalt coordination polymer material prepared by the preparation method has the advantages of quick iodine vapor capturing and releasing functions and large iodine vapor capturing capacity, and can be adopted as an iodine vapor loading material.

Description

technical field [0001] The invention belongs to the technical field of complex preparation, and in particular relates to a cobalt coordination polymer iodine vapor loading material and a preparation method and application thereof. Background technique [0002] Nuclear power is a clean and reliable source of energy that meets growing global energy needs. Therefore, proper management of nuclear waste has become a major safety issue in nuclear power production. As we all know, 129 I and 131 I is an important radioactive isotope in nuclear waste. 129 I is a hazardous species with a relatively long half-life (1.57×107 years) and is bioaccumulative, so it must be captured and reliably stored by effective means. although 131 I is a short-lived (half-life of 8.02 days) radionuclide, but due to its direct impact on human metabolic processes due to its high volatility, 131 The immediate capture of I is still necessary. Current I 2 Capture technologies mainly rely on natural or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01D53/02B01J20/30
CPCB01D53/02B01J20/226Y02C20/40
Inventor 殷政史碧波王策李茜窈马维敏张星曜
Owner SHAANXI UNIV OF SCI & TECH