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A kind of ultramicroporous metal-organic framework material zn(ox) 0.5 (mtz) and its preparation method and application of adsorption separation

A metal-organic framework and ultra-microporous technology, which is applied in the field of chemical adsorption materials and chemical separation, can solve the problems of poor selectivity and achieve high selectivity, stable structure and novel structure

Active Publication Date: 2021-09-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to develop a kind of ultra-microporous metal-organic framework material Zn(ox) for the problem that existing MOFs materials have poor selectivity to carbon dioxide and other gases. 0.5 (mtz) and its preparation method, and its application in the adsorption separation of carbon dioxide and methane, acetylene, nitrogen, ethylene, ethane and other gases

Method used

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  • A kind of ultramicroporous metal-organic framework material zn(ox) <sub>0.5</sub> (mtz) and its preparation method and application of adsorption separation
  • A kind of ultramicroporous metal-organic framework material zn(ox) <sub>0.5</sub> (mtz) and its preparation method and application of adsorption separation
  • A kind of ultramicroporous metal-organic framework material zn(ox) <sub>0.5</sub> (mtz) and its preparation method and application of adsorption separation

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Experimental program
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Effect test

Embodiment 1

[0032] Weigh 0.05mmol of basic zinc carbonate, 0.015mmol of oxalic acid, 0.5mmol of 3-methyl-1,2,4-triazole, 5ml of water as the solvent, stir well, add to the autoclave, seal and put into the oven In 200°C, after thermal reaction for 24h, the reacted mixture was filtered, washed with water and methanol, and then dried to obtain the product, marked as Zn(ox) 0.5 (mtz)-1.

Embodiment 2

[0034] Weigh 0.1mmol of zinc carbonate, 0.1mmol of oxalic acid, 0.5mmol of 3-methyl-1,2,4-triazole, 3ml of water and 3ml of n-butanol as the solvent, stir well, add to the autoclave, seal it Put it in an oven, heat reaction at 180°C for 72h, filter the reacted mixture, wash with water and methanol, and then dry to obtain the product, marked as Zn(ox) 0.5 (mtz)-2.

Embodiment 3

[0036] Weigh 0.2mmol of basic zinc carbonate, 0.2mmol of oxalic acid, 0.1mmol of 3-methyl-1,2,4-triazole, the solvent is 5ml of water and 3ml of methanol, stir well, add to the autoclave, seal Then put it in an oven, heat reaction at 130°C for 48h, filter the reacted mixture, wash with water and methanol, and then dry to obtain the product, marked as Zn(ox) 0.5 (mtz)-3.

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Abstract

The invention discloses an ultramicroporous metal organic framework material Zn(ox) 0.5 (mtz) and its preparation method and application of adsorption separation. The structural chemical formula of the material is Zn(ox) 0.5 (mtz), where ox is oxalic acid and mtz is 3‑methyl‑1 H ‑1,2,4‑triazole. The preparation method comprises the following steps: (1) weighing oxalic acid and 3-methyl-1 H ‑1,2,4‑triazole and zinc metal salt, add water or water and alcohol and mix well; (2) put the above mixture into a high-pressure reactor for reaction, filter and wash to obtain Zn(ox) 0.5 (mtz). The pores of the material are all ultra-microporous and have good water stability, which can realize the preferential adsorption of carbon dioxide and have a high adsorption capacity, and completely exclude the adsorption of methane, acetylene, nitrogen, ethylene, ethane and other gases, so it can be used Efficient removal of carbon dioxide impurities in various chemical industries.

Description

technical field [0001] The invention belongs to the field of chemical adsorption materials and chemical separation, and in particular relates to an ultramicroporous metal-organic framework material Zn(ox) 0.5 (mtz) and its preparation method and application of adsorption separation. [0002] technical background [0003] Carbon dioxide is ubiquitous in many chemical and energy production processes or exists as an impurity in raw materials. Its existence will seriously affect the purity and utilization of products or raw materials. Therefore, there is an important practical demand for separating carbon dioxide from industrial gases. For example, the main component of natural gas is methane, but it contains about 10% carbon dioxide (CO 2 ), carbon dioxide is usually pre-removed in order to meet transportation standards, and the requirement for pipeline natural gas is CO 2 <=3%, LNG is CO 2 <50 ppm; as another example, acetylene is the simplest alkyne, but also a very i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02C01B32/50
CPCB01D53/02B01D2256/22B01D2257/7022B01J20/226C01B32/50Y02P20/151Y02C20/40
Inventor 李忠彭俊洁肖静周欣夏启斌奚红霞吴颖咸士凯
Owner SOUTH CHINA UNIV OF TECH