Nitrogenous NaY type molecular sieve composite adsorption material, preparation method and application

A composite adsorption material and molecular sieve technology, which is applied in the field of CO2 treatment in air pollution control, to achieve the effects of high adsorption efficiency, low processing cost, and simple and easy adsorption operation

Inactive Publication Date: 2013-11-27
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the content of amino groups introduced by these methods is limited, which limits the significant improvement of CO2 adsorption efficiency.
More importantly, when these methods are used for amine modification, heating conditions are generally required, and the energy consumption is relatively high.

Method used

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  • Nitrogenous NaY type molecular sieve composite adsorption material, preparation method and application
  • Nitrogenous NaY type molecular sieve composite adsorption material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Put 200ml of hydrochloric acid with a concentration of 1mol / L in a 500ml beaker, then add 60mg of NaY molecular sieves, and ultrasonically disperse uniformly at room temperature (ultrasonic time is 2d) to obtain a suspension of NaY molecular sieves.

[0029] (2) Add 1.6 g of ammonium persulfate to another 200 ml of hydrochloric acid with a concentration of 1 mol / L, stir until dissolved, and obtain ammonium persulfate acid solution, which is set aside.

[0030] (3) Take 1.6g of aniline and add it to the suspension of NaY molecular sieve, ultrasonically disperse evenly at 2°C (ultrasonic time is 6h), add all the ammonium persulfate solution prepared in step (2) dropwise, in 2 Under the condition of ℃, aniline is polymerized on NaY type molecular sieve, the reaction time is 24h, and solid particles are obtained.

[0031] (4) The solid particles were washed with distilled water, ethanol and acetone in turn until neutral, and dried at 75°C to obtain Material 1, which was...

Embodiment 2

[0033] (1) Put 200ml of hydrochloric acid with a concentration of 1mol / L in a 500ml beaker, then add 60mg of NaY molecular sieve, and disperse uniformly by ultrasonic at room temperature (ultrasonic time is 18h), to obtain a suspension solution of NaY molecular sieve.

[0034] (2) Add 2 g of ammonium persulfate to another 200 ml of hydrochloric acid with a concentration of 1 mol / L, stir until dissolved, and obtain an ammonium persulfate acid solution for later use.

[0035] (3) Take 2g of aniline and add it to the suspension solution of NaY molecular sieve, and disperse it uniformly under the condition of 3°C (ultrasonic time is 4h), add all the ammonium persulfate solution prepared in step (2) drop by drop, at 0°C Under the conditions, aniline is polymerized on NaY molecular sieves, and the reaction time is 24 hours to obtain solid particles.

[0036] (4) Wash the solid particles with distilled water, ethanol and acetone in turn until neutral, and dry at 65°C to obtain materi...

Embodiment 3

[0038] (1) Put 200ml of hydrochloric acid with a concentration of 1mol / L in a 500ml beaker, then add 60mg of NaY molecular sieve, and disperse uniformly by ultrasonic at room temperature (ultrasonic time is 2d) to obtain a suspension of NaY molecular sieve.

[0039] (2) Add 2.4 g of ammonium persulfate to another 200 ml of hydrochloric acid with a concentration of 1 mol / L, stir until dissolved, and obtain ammonium persulfate acid solution, which is set aside.

[0040] (3) Take 2.4g of aniline and add it to the suspension of NaY molecular sieve, ultrasonically disperse evenly at 4°C (ultrasonic time is 6h), add all the ammonium persulfate solution prepared in step (2) drop by drop, in Aniline was polymerized on NaY molecular sieve at 5°C for 30 hours to obtain solid particles.

[0041] (4) The solid particles were washed with distilled water, ethanol and acetone in turn until neutral, and dried at 80°C to obtain material 3, which was stored in a desiccator for future use.

[0...

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Abstract

The invention provides a nitrogenous NaY type molecular sieve composite adsorption material, a preparation method and application. The preparation method of the material comprises the steps of carrying out a polymerization reaction on aniline on a NaY type molecular sieve under the action of a crosslinking agent to obtain solid granules, and washing and drying the solid granules to obtain the nitrogenous NaY type molecular sieve composite adsorption material. The invention further provides the nitrogenous NaY type molecular sieve composite adsorption material prepared by the method and an application thereof. The preparation method of the nitrogenous NaY type molecular sieve composite adsorption material is free of high temperature calcination, low in energy consumption and simple in steps, and the aniline is polymerized on the NaY type molecular sieve, so that the amino density is high. The CO2 adsorption ability of the nitrogenous NaY type molecular sieve composite adsorption material provided by the invention is strong, when a gas contains low-concentration CO2 under normal temperature and normal pressure, the CO2 adsorption rate of the nitrogenous NaY type molecular sieve composite adsorption material provided by the invention is quite high, the adsorption operation is simple and easy, and the treatment cost is low.

Description

technical field [0001] The invention belongs to CO in air pollution control 2 The field of processing specifically relates to a nitrogen-containing NaY type molecular sieve composite adsorption material and its application. Background technique: [0002] The accumulation of greenhouse gases in the atmosphere can enhance the greenhouse effect, leading to climate change and global warming. According to the fourth climate change assessment report of the Intergovernmental Panel on Climate Change (IPCC), global warming will lead to more common climate disasters, and the global temperature may rise by 1.1-6.4K by the end of the 21st century, and the sea level may rise by 18~ 59cm. If the warming rate is greater than 3.5K, 40% to 70% of species will face extinction. To mitigate climate change, we must reduce greenhouse gas emissions. Among all greenhouse gases, CO 2 It has a long lifespan (50-200 years) and high content in the atmosphere. Its emissions account for about 80% o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCY02C10/08Y02C20/40
Inventor 刘凤玲卢霞郭照冰吴梦龙刘杰任玉锐
Owner NANJING UNIV OF INFORMATION SCI & TECH
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