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Microporous self-assembly material with stable aqueous phase and based on nitrogen phosphate heterocycle and preparation method for same

A nitrogen-heterocycle, self-assembly technology, applied in the direction of separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of poor application prospects and poor stability

Inactive Publication Date: 2013-01-23
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, these microporous self-assembled materials reported so far have poor stability when applied to industrial waste gas, and their application prospects are slim.
Microporous self-assembled materials with the ability to selectively adsorb carbon dioxide and stabilize the aqueous phase have broader application prospects. However, microporous self-assembled materials that meet these criteria are rarely reported.

Method used

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  • Microporous self-assembly material with stable aqueous phase and based on nitrogen phosphate heterocycle and preparation method for same
  • Microporous self-assembly material with stable aqueous phase and based on nitrogen phosphate heterocycle and preparation method for same
  • Microporous self-assembly material with stable aqueous phase and based on nitrogen phosphate heterocycle and preparation method for same

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Experimental program
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Embodiment 1

[0022] Add 0.131 g of nickel nitrate, 0.454 g of 4-(3,5-dimethyl-1H-1,2,4-triazole-)phenylphosphoric acid to 8 mL of deionized water and 2 mL of N,N'-di In a mixed solvent of methylformamide, after stirring at room temperature for 30 minutes, a green emulsion was obtained, which was transferred to a stainless steel reaction kettle lined with polytetrafluoroethylene, and reacted at 140 ° C for about 72 hours, and then heated for about 5 Cool at a rate of °C / h, filter to obtain green crystals, wash the crystals three times with deionized water, and dry in an oven at 60 °C for 30 minutes to obtain the microporous self-assembled material.

Embodiment 2

[0024] Add 0.114 g of nickel acetate and 0.204 g of 4-(1,2,4-triazole-)phenylphosphoric acid into 10 mL of deionized water, and stir at room temperature for 60 minutes. Move it to a stainless steel reactor lined with polytetrafluoroethylene, react at 180°C for about 48 hours, then cool at a rate of about 5°C / h, filter to obtain green crystals, wash the crystals three times with deionized water, The microporous self-assembled material was obtained by placing it in an oven at 60° C. for 30 minutes and drying it for 30 minutes.

Embodiment 3

[0026] Add 0.263 g nickel sulfate, 0.280 g 4-(3,5-diethyl-1,2,4-triazole-)phenylphosphoric acid to 7 mL of deionized water and 3 mL of N,N'-dimethyl in a mixed solvent of formamide and stirred at room temperature for 30 minutes. Move it to a stainless steel reactor lined with polytetrafluoroethylene, react at 140°C for about 72 hours, then cool at a rate of about 5°C / h, filter to obtain green crystals, wash the crystals three times with deionized water, The microporous self-assembled material was obtained by placing it in an oven at 60° C. for 30 minutes and drying it for 30 minutes.

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Abstract

The invention belongs to the technical field of advanced porous materials, and particularly discloses a microporous self-assembly material with a stable aqueous phase and based on nitrogen phosphate heterocycle and a preparation method for the same. According to the invention, an organic ligand of nitrogen phosphate heterocycles is used as the support wall of the microporous material, metal ions with a multi-ligand-field geometrical configuration are used as central metal, and the novel microporous self-assembly material is prepared by means of a solvothermal self-assembly growth method. The material can keep a crystalline structure in boiling water, and the structure cannot be broken even in a strongly acidic condition that pH is equal to 1. The size dimension of the pore channels of the material ranges from 0.3 to 1 nm, the adsorption capacity for a greenhouse gas, namely, carbon dioxide, is up to 158 mg / g, and the adsorption capacity for nitrogen is only 3 mg / g. Therefore, the microporous material has a capacity of selectively adsorbing and separating the greenhouse gas. The preparation method disclosed by the invention is simple and practicable, the used raw materials are simple and easy to get, and the prepared microporous material is high in stability and has a wide prospect in the aspect of adsorbing and removing the greenhouse gas in industrial waste gas.

Description

technical field [0001] The invention belongs to the technical field of advanced porous materials, in particular to a microporous self-assembly material based on a phosphonic acid nitrogen heterocycle with stable water phase and a preparation method thereof. Background technique [0002] At present, global carbon dioxide emissions are still increasing, which further accelerates the speed of global warming and has a catastrophic impact on the ecosystem. Industrial waste gas is the main source of carbon dioxide emissions. The traditional method of collecting carbon dioxide requires the use of toxic amine materials, and the activation process consumes a lot of energy. Therefore, the development of new adsorbent materials with low energy consumption, high efficiency and good stability has become one of the hotspots in material research. [0003] In recent years, the synthesis and application of microporous self-assembled materials has become a hotspot in the research of advanced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30B01J20/22B01D53/02
CPCY02C10/08Y02C20/40
Inventor 刘小锋翟夫朋周亚明陈珍霞凌云翁林红
Owner FUDAN UNIV
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