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A kind of amino terminal hyperbranched polymer solid amine adsorption material and its preparation method and application

A technology of amino-terminated hyperbranched and hyperbranched polymers, which is 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 thermal and chemical stability , the effect of high adsorption capacity

Active Publication Date: 2017-06-20
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 environmentally friendly high alkyl group with strong adsorption capacity for acid gas, large adsorption capacity, and good regeneration performance. Ammonium-terminated hyperbranched polymer solid-state amine adsorbents with ammonia density

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Preparation

[0040] (1) Under the condition of 0 °C, ethylenediamine and acrylamide are mixed uniformly in methanol solution at a molar ratio of 1:1, and the Michael addition reaction is performed for 4 hours to obtain a hyperbranched polymer precursor.

[0041] (2) The obtained precursor was transferred to the eggplant-shaped bottle of the rotary evaporator, and the temperature-programmed reaction was carried out under the conditions of vacuuming by a circulating water vacuum pump, reflux condensation, and high-speed rotation: 60°C for 1h, 100°C for 2h, 120°C. ℃ for 2h and 140℃ for 2h to obtain amino-terminated hyperbranched polymer.

[0042] (3) Dissolve the amino-terminated hyperbranched polymer in water to prepare 100 mL of a 5 wt % aqueous solution; under stirring conditions, slowly add 0.1 wt % of the cross-linking agent glyoxal, cross-linking reaction for 5 min, and bake at 60 °C. dry to obtain an amino-terminated hyperbranched polymer solid amine material. ...

Embodiment 2

[0046] 1. Preparation

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

[0048] (2) The obtained precursor was transferred to the eggplant-shaped bottle of the rotary evaporator, and the temperature-programmed reaction was carried out under the conditions of vacuuming by a circulating water vacuum pump, reflux condensation, and high-speed rotation: 60°C for 1h, 100°C for 2h, 120°C. ℃ for 2h and 140℃ for 2h to obtain amino-terminated hyperbranched polymer.

[0049] (3) Dissolve the amino-terminated hyperbranched polymer in ethanol to prepare 100 mL of a 40 wt % solution; under stirring conditions, slowly add 5 wt % of the cross-linking agent glutaraldehyde dropwise, and conduct the cross-linking reaction for 20 min, and bake at 60 °C. dry to obtain an amino-terminated hyperbranched polymer sol...

Embodiment 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 carried out for 16h to obtain a hyperbranched polymer precursor.

[0055] (2) The obtained precursor was transferred to the eggplant-shaped bottle of the rotary evaporator, and the temperature-programmed reaction was carried out under the conditions of vacuuming by a circulating water vacuum pump, reflux condensation, and high-speed rotation: 60°C for 1h, 100°C for 2h, 120°C. ℃ for 2h and 140℃ for 2h to obtain amino-terminated hyperbranched polymer.

[0056] (3) Dissolve the amino-terminated hyperbranched polymer in methanol to prepare 100 mL of a 20 wt % solution; under stirring conditions, slowly add 3 wt % of the cross-linking agent phthalic anhydride, and conduct the cross-linking reaction for 10 min for 60 minutes. drying at °C to obtain a solid amine material ...

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PUM

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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 particularly relates to a solid amine adsorption material of an amino-terminated hyperbranched polymer and a preparation method and application thereof. Background technique [0002] CO in the atmosphere 2 The increase in the concentration leads to the intensification of the greenhouse effect, which has become one of the largest energy and environmental problems in the world. 2 The separation and enrichment is to reduce CO 2 emissions, the most direct means of reducing the greenhouse effect. CO 2 Removal of air is a key technology for environmental control and life support systems in closed systems such as submarines, wartime isolation civil air defense, national defense underground fortifications, and space workstations. The core of its technology is adsorption materials. CO 2 Structural design and performance regulation of adsorbent materials, especially improving the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCY02C20/40
Inventor 陈水挟何辉
Owner SUN YAT SEN UNIV
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