Preparation method of attapulgite based CO2 adsorption material with polyacrylamide grafted surface

A technology of polyacrylamide and surface grafting, which is applied in the field of preparation of CO2 adsorption materials, can solve the problems of poor adsorption selectivity, and achieve the effects of low regeneration energy consumption, good adsorption capacity, and simple process

Inactive Publication Date: 2016-03-02
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of its own structure, the attapulgite clay has poor adsorption selectivity.

Method used

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  • Preparation method of attapulgite based CO2 adsorption material with polyacrylamide grafted surface
  • Preparation method of attapulgite based CO2 adsorption material with polyacrylamide grafted surface
  • Preparation method of attapulgite based CO2 adsorption material with polyacrylamide grafted surface

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: Prepare composite adsorbent according to the following steps

[0031] (1) Dry the attapulgite clay at 105°C and crush it through 200 mesh; add 3g of dried attapulgite clay and 100ml of organic solvent toluene into the container, add 3ml of silane coupling agent γ-aminopropyltri Ethoxysilane, placed in ultrasonic at 40°C for 50 minutes; reacted in a constant temperature oil bath with magnetic stirring at 40°C for another 5 hours; the reaction product was filtered and washed with toluene, absolute ethanol and deionized water in sequence, and dried at 105°C , crushing and grinding to obtain modified attapulgite clay;

[0032] (2) Mix 40ml of dichloromethane and 0.4ml of triethylamine into a round bottom flask, then add 0.75g of initiator ACVA and 1g of modified attapulgite clay into the round bottom flask, stir the above mixture at room temperature for 6h and mix well , wash and filter the solid matter alternately with high-purity water and absolute ethanol,...

Embodiment 2

[0034] Embodiment 2: prepare composite adsorbent according to the following steps

[0035] (1) Dry the attapulgite clay at 105°C and crush it through 200 meshes; add 3g of dried attapulgite clay and 150ml of organic solvent absolute ethanol into the container, and add 4ml of silane coupling agent γ-glycidol during the stirring process Etheroxypropyl trimethoxysilane, placed in ultrasonic at 45°C for 40 minutes; reacted in a constant temperature oil bath with magnetic stirring at 50°C for 4 hours; the reaction product was filtered and washed with toluene, absolute ethanol and deionized water in sequence, Drying at 105°C, crushing and grinding to obtain modified attapulgite clay;

[0036] (2) Mix 50ml of dichloromethane and 0.5ml of triethylamine into a round-bottomed flask, then add 1g of initiator ACVA and 1.5g of modified attapulgite clay into the round-bottomed flask, and stir the above mixture at room temperature for 6h. Evenly, alternately wash and filter out solid matter...

Embodiment 3

[0038] Embodiment 3: prepare composite adsorbent according to the following steps

[0039] (1) Dry the attapulgite clay at 105°C and crush it through 200 meshes; add 3g of dried attapulgite clay and 150ml of organic solvent absolute ethanol into the container, and add 5ml of silane coupling agent γ-aminopropanol during stirring Triethoxysilane was placed in ultrasonic wave at 45°C for 30 minutes; reacted in a constant temperature oil bath with magnetic stirring at 60°C for 3 hours; the reaction product was filtered and washed with toluene, absolute ethanol and deionized water in sequence, Drying at 105°C, crushing and grinding to obtain modified attapulgite clay;

[0040] (2) Mix 60ml of dichloromethane and 0.6ml of triethylamine into a round bottom flask, then add 1.5g of initiator ACVA and 2g of modified attapulgite clay into the round bottom flask, and stir the above mixture at room temperature for 6h to mix Evenly, alternately wash and filter out solid matter with high-pu...

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PUM

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Abstract

The invention discloses a preparation method of an attapulgite based CO2 adsorption material with a polyacrylamide grafted surface. The method includes: reacting a silane coupling agent with attapulgite clay to conduct surface functionalization, thus obtaining modified attapulgite clay; then introducing the azo group ACVA to the modified attapulgite clay to obtain an ATP / ACVA composite material; and finally, subjecting the prepared ATP / ACVA composite material and a monomer to graft copolymerization, thus obtaining a composite adsorbent with an amino functional group. The preparation method provided by the invention has the advantages of simplicity, easy operation, mild reaction conditions, easy industrial production, reusability, wide application prospect, and large adsorption capacity and strong selectivity to CO2.

Description

technical field [0001] The present invention relates to the preparation method of attapulgite clay adsorbent, in particular to a kind of attapulgite-based surface grafted polyacrylamide CO 2 Preparation method of adsorbent material. Background technique [0002] The greenhouse effect is one of the most concerned environmental issues in the world. Among all greenhouse gases, carbon dioxide (CO 2 ) has the greatest impact on global warming. The greenhouse effect leads to environmental problems such as melting glaciers, rising sea levels, high temperatures, and storms, which can lead to natural disasters such as drought, species extinction, and disruption of natural ecological balance. With the rapid development of industry and national economy, CO 2 Emissions have far exceeded the CO consumed by plant photosynthesis 2 This leads to a more serious greenhouse effect and has serious negative impacts on society and the economy. However CO 2 It is also a carbon resource that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCY02C20/40
Inventor 张兴振赵宜江周守勇褚效中李梅生黄进卜翠萍
Owner HUAIYIN TEACHERS COLLEGE
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