Amine-terminated hyperbranched polymer solid amine adsorption material as well as preparation method and application thereof

A technology of amino-terminated hyperbranched and hyperbranched polymers, applied in chemical instruments and methods, separation methods, and other chemical processes, can solve the problems of insufficient adsorption capacity of solid amine materials, and achieve wide molecular mass distribution and high adsorption capacity , The effect of simple synthesis method

Active Publication Date: 2015-09-23
SUN YAT SEN UNIV
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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 to overcome the defects and technical deficiencies of the insufficient adsorption capacity of existing solid amine materials, and to provide a reproducible and enviro

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0038] Example 1

[0039] 1. Preparation

[0040] (1) Under the condition of 0℃, ethylenediamine and acrylamide were mixed uniformly in methanol solution at a molar ratio of 1:1, and the Michael addition reaction was carried out for 4h to obtain the hyperbranched polymer precursor.

[0041] (2) Transfer the obtained precursor to the eggplant-shaped bottle of the rotary evaporator, and carry out the temperature-programmed reaction under the conditions of circulating water vacuum pump vacuum, reflux condensation, and high-speed rotation: 60℃ for 1h, 100℃ for 2h, 120 Reaction at ℃ for 2h and at 140℃ for 2h to prepare amino-terminated hyperbranched polymer.

[0042] (3) Dissolve the amino-terminated hyperbranched polymer in water and prepare 100 mL of a 5wt% aqueous solution; under stirring conditions, slowly add 0.1wt% of the crosslinking agent glyoxal, crosslinking reaction for 5min, drying at 60℃ After drying, the amino-terminated hyperbranched polymer solid amine material is prepared...

Example Embodiment

[0045] Example 2

[0046] 1. Preparation

[0047] (1) Diethylenetriamine and methyl acrylate are mixed uniformly in methanol solution at a molar ratio of 1:1 at 25°C, and the Michael addition reaction is carried out for 24 hours to obtain a hyperbranched polymer precursor.

[0048] (2) Transfer the obtained precursor to the eggplant-shaped bottle of the rotary evaporator, and carry out the temperature-programmed reaction under the conditions of circulating water vacuum pump vacuum, reflux condensation, and high-speed rotation: 60℃ for 1h, 100℃ for 2h, 120 Reaction at ℃ for 2h and at 140℃ for 2h to prepare amino-terminated hyperbranched polymer.

[0049] (3) Dissolve the amino-terminated hyperbranched polymer in ethanol to prepare 100 mL of a 40wt% solution; under stirring conditions, slowly add 5wt% of crosslinking agent glutaraldehyde, crosslinking reaction for 20min, drying at 60℃ After drying, the amino-terminated hyperbranched polymer solid amine material is prepared.

[0050] (4...

Example Embodiment

[0052] Example 3

[0053] 1. Preparation

[0054] (1) Under the condition of 15°C, triethylenetetramine and methyl methacrylate were mixed uniformly in methanol solution at a molar ratio of 1:1, and the Michael addition reaction was performed for 16 hours to obtain a hyperbranched polymer precursor.

[0055] (2) Transfer the obtained precursor to the eggplant-shaped bottle of the rotary evaporator, and carry out the temperature-programmed reaction under the conditions of circulating water vacuum pump vacuum, reflux condensation, and high-speed rotation: 60℃ for 1h, 100℃ for 2h, 120 Reaction at ℃ for 2h and at 140℃ for 2h to prepare amino-terminated hyperbranched polymer.

[0056] (3) Dissolve the amino-terminated hyperbranched polymer in methanol to prepare 100 mL of a 20wt% solution; under stirring conditions, slowly add 3wt% of the crosslinking agent phthalic anhydride, and the crosslinking reaction is 10min, 60 Drying at ℃, the amino-terminated hyperbranched polymer solid amine m...

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Abstract

The invention discloses an amine-terminated hyperbranched polymer solid amine adsorption material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out a Michael addition reaction between an amination reagent and an unsaturated monomer, so as to generate a hyperbranched polymer precursor; realizing polycondensation reactive synthesis in programmed temperature, so as to obtain an amine-terminated hyperbranched polymer; carrying out cross-linking and solidifying; reducing amide groups and imine groups so as to obtain the solid amine adsorption material. The solid amine adsorption material prepared according to the method has high alkyl amine density, has not only very high adsorption capacities for acid gases such as CO2, SO2 and H2S, but also excellent adsorptive regeneration performance, is high in heat stability and chemical stability, and high in adsorption capacity even after multiple regeneration, and can be used in the fields of acid gas adsorption trapping and environmental management, and the field of CO2 removing in a closed system.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, and more specifically relates to an amino-terminated hyperbranched polymer solid amine adsorption material and its preparation method and application. Background technique [0002] Atmospheric CO 2 The increase of the concentration leads to the intensification of the greenhouse effect, which has become one of the world's largest energy and environmental problems. 2 The separation and enrichment is to reduce CO 2 emissions, the most direct means to slow down the greenhouse effect. CO 2 The removal of air is a key technology for environmental control and life support systems in closed systems such as submarines, isolated civil air defenses in wartime, national defense underground fortifications, and space workstations. The core of its technology is adsorption materials. CO 2 The structural design and performance regulation of adsorbent materials, especially to increase the adsorpt...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCY02C20/40
Inventor 陈水挟何辉
Owner SUN YAT SEN UNIV
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