Ionic liquid CO2 trapping agent and preparation method thereof

An ionic liquid and collector technology, applied in the field of separation, can solve the problems of high product cost and complex synthesis process, and achieve the effects of low product cost, simple synthesis process and improved stability.

Inactive Publication Date: 2011-04-13
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These patents involve functionalized ionic liquids for the removal and adsorption of acid gases, but these ionic liquids have disadvantages such as complicated synthesis process and high product cost

Method used

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  • Ionic liquid CO2 trapping agent and preparation method thereof
  • Ionic liquid CO2 trapping agent and preparation method thereof
  • Ionic liquid CO2 trapping agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Mix 1 mol of N-methylimidazole and 1 mol of n-butane bromide, stir and react at 80°C for 12-15 hours, then cool to room temperature to obtain 1 mol of intermediate product N-methyl-N-n-butane imidazole bromide; Soak 1mol of the intermediate N-methyl-N-butaneimidazole bromide in 300mL strong base anion exchange resin (OH type), carry out ion exchange reaction for 10h under stirring at 30pmr, filter, repeat the above soaking process once , after filtering again, [Bmim]OH-type product was obtained; 1mol glycine was made into a saturated solution of amino acid, [Bmim]OH was gradually added to the above amino acid solution, and the reaction was stirred at room temperature for 12-15h to obtain [Bmim]A ionic liquid , for the present invention CO 2 collector.

Embodiment 2

[0026] Mix 1 mol of N-ethylimidazole and 1 mol of bromoethane, stir and react at 80°C for 12-15 hours, then cool to room temperature to obtain 1 mol of intermediate product 1 mol of N-ethyl-N-ethaneimidazole bromide; Soak 1mol of the intermediate N-ethyl-N-ethaneimidazole bromide in 300mL of strong base anion exchange resin (OH type), carry out ion exchange reaction for 10h under stirring at a slow speed of 40pmr, filter, and repeat the above soaking process Once, after filtering again, [Bmim]OH-type product was obtained; 1 mol of alanine was made into a nearly saturated solution of amino acid, [Bmim]OH was gradually added to the above amino acid solution, and the reaction was stirred at room temperature for 12-15h to obtain [Bmim ] A ionic liquid, is CO of the present invention 2 collector.

Embodiment 3

[0028] Mix 1 mol of N-methylimidazole and 1 mol of n-propane bromide, stir and react for 12-15 hours at 80°C, then cool to room temperature to obtain 1 mol of intermediate N-methyl-N-propane imidazole bromide; The intermediate product N-methyl-N-propaneimidazole bromide is soaked in 300mL of strong base anion exchange resin (OH type), and the ion exchange reaction is carried out under stirring at a slow speed of 50pmr for 10h, filtered, and the above soaking process is repeated once. After filtering again, the [Bmim]OH-type product was obtained; 1mol lysine was made into a nearly saturated solution of amino acid, [Bmim]OH was gradually added to the above amino acid solution, and the reaction was stirred at room temperature for 12-15h to obtain [Bmim]A Ionic liquid, for the present invention CO 2 collector.

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PUM

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Abstract

The invention provides an ionic liquid CO2 trapping agent and a preparation method thereof. Due to functional design, the anion is an amino acid radical, and the ionic liquid is synthesized by a halogenated intermediate and is excellent functional ionic liquid; and the product directly serves as the CO2 trapping agent without dehydration and purification. The trapping agent is low in synthesis cost and low in price and has better trapping performance and regeneration performance than amino salt absorbents. The invention can be applied to tower reactors (such as bubble towers, packed towers, plate towers and the like) and the film absorption process; the trapping agent is recycled in a device; and the provided ionic liquid has wide application market in the field of separating and trapping of acid gases.

Description

1. Technical field [0001] The invention relates to the technical field of separation, in particular to a CO 2 Collector and its preparation method. 2. Background technology [0002] Global warming has attracted global attention, and carbon dioxide (CO 2 ) is generally considered to be one of the important causes of global warming due to its greenhouse effect. reduce CO 2 emissions, reducing atmospheric CO 2 Concentration, to achieve a low-carbon economy, is a common problem and challenge faced by mankind. Various high-efficiency and low-energy feasible separation and capture CO 2 Technology is highly valued by countries. Various high performance CO capture 2 The development of absorbents is one of the topics of research in this field. In recent years, functionalized absorbents have become an important tool for capturing CO due to their unique properties. 2 A hot topic in absorbent research. [0003] Functionalized absorbent is a kind of absorbent with excellent capt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/50B01D53/78C01B31/20C01B32/50
Inventor 陆建刚嵇艳张慧索福喜樊璠刘聪
Owner NANJING UNIV OF INFORMATION SCI & TECH
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