Preparation method of attapulgite-based molecular imprinting type CO2 adsorbing material

A technology of molecular imprinting and adsorption materials, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, etc., can solve the problem of less attapulgite clay, achieve large adsorption capacity, large adsorption selectivity, and low regeneration energy consumption Effect

Inactive Publication Date: 2016-03-09
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are relatively few research reports on the use of attapulgite clay for gas adsorption

Method used

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  • Preparation method of attapulgite-based molecular imprinting type CO2 adsorbing material
  • Preparation method of attapulgite-based molecular imprinting type CO2 adsorbing material
  • Preparation method of attapulgite-based molecular imprinting type CO2 adsorbing material

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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 meshes; add 3g of dried attapulgite clay and 100ml toluene into the container, and add 3ml of silane coupling agent γ-(methacryloyl Oxygen)propyltrimethoxysilane, react in ultrasonic at 40°C for 50 minutes; react in a constant temperature oil bath with magnetic stirring at 40°C for another 5 hours; the reaction product is filtered, washed, dried, and Pulverized to obtain modified attapulgite clay;

[0032] (2) Put 2mmol of acrylamide and 1mmol of acetic acid in the reactor, add 10mmol of acetonitrile, seal it, and disperse it ultrasonically for 10 minutes, so that the whole system is fully dissolved and mixed evenly, and the system is left at room temperature for 12 hours to make Template molecules and functional monomers fully interact to form a stable complex;

[0033] (3) Add 10mmol crosslinker ethylene glycol dimethacry...

Embodiment 2

[0035] Embodiment 2: prepare composite adsorbent according to the following steps

[0036] (1) Dry the attapulgite clay at 105°C and crush it through 200 meshes; add 3g of dried attapulgite clay and 120ml of absolute ethanol into the container, and add 4ml of silane coupling agent 3-aminopropyl during stirring Triethoxysilane, 45 ° C ultrasonic reaction for 30 minutes; 50 ° C magnetically stirred constant temperature oil bath for another 4 hours; the reaction product was successively filtered through toluene, absolute ethanol and deionized water, washed, dried, and pulverized to prepare Obtain modified attapulgite clay;

[0037] (2) Put 4mmol of acrylamide and 1mmol of oxalic acid in the reactor, add 15mmol of acetonitrile:toluene mixed solvent with a volume ratio of 1:1, seal, and ultrasonically disperse for 15 minutes, so that the entire system is fully dissolved and mixed evenly. Let the system stand at room temperature for 24 hours, so that the template molecules and func...

Embodiment 3

[0040] Embodiment 3: prepare composite adsorbent according to the following steps

[0041] (1) Dry the attapulgite clay at 105°C and crush it through 200 meshes; add 3g of dried attapulgite clay and 150ml of toluene into the container, and add 5ml of silane coupling agent 3-aminopropyltriethyl during stirring Oxysilane was reacted in ultrasonic at 45°C for 30 minutes; then reacted in a constant temperature oil bath with magnetic stirring at 60°C for 3 hours; Sexual attapulgite clay;

[0042] (2) Put 8mmol of acrylamide and 1mmol of oxalic acid in the reactor, add 20mmol of acetonitrile solvent, seal it, and ultrasonically disperse it for 20 minutes, so that the whole system is fully dissolved and mixed evenly, and the system is allowed to stand at room temperature for 18 hours, the template molecules and functional monomers can fully interact to form a stable complex;

[0043] (3) Add 30mmol crosslinker N,N'-methylenebisacrylamide, 0.5mol initiator azobisisobutyronitrile and...

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Abstract

The invention discloses a preparation method of an attapulgite-based molecular imprinting type CO2 adsorbing material. The method comprises: reacting by using a silane coupling agent and attapulgite clay to obtain modified attapulgite clay; soaking an initiator, a cross-linking agent, a monomer and a template in hole channels of the modified attapulgite clay, triggering polymerization, and generating cross-linked polymers in hole channels of the modified attapulgite clay through triggering polymerization; and eluting the template by using an elution solvent to obtain the attapulgite-based molecular imprinting type CO2 adsorbing material having amino functional groups. The preparation method disclosed by the invention is simple, easy to operate and liable in industrial production; a prepared adsorbent can be repeatedly used, is high in adsorptive selectivity on CO2, and is wide in application prospect.

Description

technical field [0001] The invention relates to a preparation method of an attapulgite clay adsorbent, in particular to a CO 2 A method for preparing an attapulgite-based molecularly imprinted adsorption material for adsorption. Background technique [0002] CO 2 It is one of the main greenhouse gases, which can pass through the short-wave radiation of the sun and absorb the long-wave radiation of the earth, thereby increasing the temperature of the surface or the bottom atmosphere, causing the "greenhouse effect". Since the Industrial Revolution, due to human beings' over-reliance on fossil energy, the CO in the atmosphere has 2 The concentration keeps increasing. In 2013, CO 2 Emissions reached a record 36 billion tons, far exceeding the CO consumed by photosynthesis in plants 2 quantity. Fossil fuels are the most important part of the world's energy structure at this stage, and it will take a long time to develop new and cheap alternative energy sources. In this ca...

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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