Preparation method of adsorbent for adsorbing and separating CO2

An adsorption separation and adsorbent technology, applied in the field of adsorbent preparation, can solve the problems of small adsorption capacity, poor cycle stability, and low adsorption selectivity, and achieve high adsorption capacity, high adsorption selectivity, high adsorption capacity and selectivity sexual effect

Active Publication Date: 2016-09-21
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is for MOFs material to CO under low partial pressure 2 Small adsorptio

Method used

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  • Preparation method of adsorbent for adsorbing and separating CO2
  • Preparation method of adsorbent for adsorbing and separating CO2
  • Preparation method of adsorbent for adsorbing and separating CO2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Measure 9.0ml DMF and 1.0ml acetic acid into a 25ml beaker, and then add 25.5mg terephthalic acid, 15.3mg 2-sulfonic acid terephthalic acid monosodium salt and 53mg anhydrous tetrachloride into the beaker. zirconium. After stirring the above mixture uniformly, it was transferred to a 20ml hydrothermal reactor, and then placed in an oven to crystallize at 120°C for 40 hours. Naturally cooled to room temperature, centrifuged and washed with DMF and diethyl ether 3 times, and then centrifuged to obtain solid powder. The solid powder prepared above is placed in a drying box and dried at 120°C for 24 hours to obtain UiO-66-SO 3 H sample. Using the above synthesis method, UiO-66-SO was synthesized in multiple batches 3 H samples are available.

[0021] Modified sulfonated metal organic framework material UiO-66-SO after ammonia water treatment 3 H. Weigh 1.5g UiO-66-SO 3 The H solid powder was added to a round bottom flask with a volume of 100ml, and then 90.0ml of ammonia wa...

Embodiment 2

[0023] UiO-66-SO 3 The preparation method and process of H are exactly the same as those described in Example 1.

[0024] Modified sulfonated metal organic framework material UiO-66-SO after ammonia water treatment 3 H. Weigh 1.5g UiO-66-SO 3 The H solid powder was added to a round bottom flask with a volume of 100ml, and then 60.0ml of ammonia water with a concentration of 2.0M (ie ammonia water and UiO-66-SO 3 The mass ratio of H is 40:1); the mixture is placed in a water bath at a temperature of 60°C for 8 hours, cooled in an ice-water mixture at 0°C for 10 minutes, washed three times with deionized water and ethanol by centrifugation, and the white powder obtained is transferred to Dry in a drying oven at 100°C for 10 hours to obtain an adsorbent, which is marked as adsorbent A2. Measured by ASAP2020 physical adsorption instrument, the BET specific surface area and pore volume of adsorbent A2 are respectively 439m 2 / g and 0.265cm 3 / g, and at 25℃ and 0.15bar, it has 2 And N ...

Embodiment 3

[0026] UiO-66-SO 3 The preparation method and process of H are exactly the same as those described in Example 1.

[0027] Modified sulfonated metal organic framework material UiO-66-SO after ammonia water treatment 3 H. Weigh 1.5g UiO-66-SO 3 H solid powder was added to a round bottom flask with a volume of 100ml, and then 45.0ml of ammonia water with a concentration of 3.0M (ie ammonia water and UiO-66-SO 3 The mass ratio of H is 30:1); the mixture is placed in a water bath at a temperature of 50°C for 6 hours, cooled in an ice-water mixture at 0°C for 10 minutes, washed with deionized water and methanol by centrifugation three times, and the white powder obtained is transferred to Dry it in a drying box at 90°C for 15 hours to obtain an adsorbent, which is marked as adsorbent A3. Measured by ASAP2020 physical adsorption instrument, the BET specific surface area and pore volume of adsorbent A3 are respectively 423m 2 / g and 0.262cm 3 / g, and at 25℃ and 0.15bar, the adsorbent A3 ...

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Abstract

The invention discloses a preparation method of an adsorbent for adsorbing and separating CO2. The method comprises steps as follows: first of all, an activated UiO-66-SO3H sample is prepared; then, the modified sulfated metal organic framework material UiO-66-SO3H is post-processed with ammonium hydroxide, a reaction is performed at a temperature of 40-60 DEG C for 6.0-12.0 h, the mixture is cooled in a 0-DEG C ice and water mixture for 10 min, centrifugally washed three times with deionized water and a low-boiling-point organic solvent respectively and filtered, and white powder is obtained; the white powder is transferred to an oven to be dried at a temperature of 80-100 DEG C for 10-20 h, and the adsorbent is obtained. The adsorbent prepared with the method has higher adsorbing capacity and higher adsorptive selectivity to CO2 in the low CO2 partial pressure.

Description

Technical field [0001] The invention relates to the field of adsorption and separation, in particular to a method for adsorption and separation of CO 2 The preparation method of the adsorbent. Background technique [0002] CO 2 The reduction of greenhouse gas emissions is an important issue that the international community urgently needs to solve today, and it is also a key issue facing the sustainable development of society in the future. Currently, about 85% of the world's energy supply comes from fossil fuels, including coal, oil, and natural gas. The burning of fossil fuels produces a lot of CO 2 , Emitting about 30 billion tons per year. CO in the atmosphere since the industrial revolution 2 The concentration rose from 280ppm to 385ppm. Thus, CO 2 The capture and storage of water is not only a scientific issue, but also a social issue related to environmental protection and sustainable development. [0003] CO 2 Capture technology is one of the key technologies for carbon e...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01D53/02
CPCB01D53/02B01D2257/504B01J20/226Y02C20/40
Inventor 陈德利陈贵兵许春慧涂高美朱伟东
Owner ZHEJIANG NORMAL UNIVERSITY
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