Polybenzoxazine-based derived carbon material for adsorbing carbonyl sulfide and preparation method and application thereof

A technology based on polybenzoxazin and carbonyl sulfide, which is applied in chemical instruments and methods, purification of solid gases with absorption, carbon compounds, etc., can solve difficult industrial production processes, cumbersome preparation methods, and cumbersome operation processes and other problems, to achieve the effect of safety and environmental protection in the preparation process, simple preparation process and simple operation

Pending Publication Date: 2021-10-01
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Invention patent CN108640113 A discloses "a preparation method of nitrogen and oxygen co-doped porous carbon material based on bio-based benzoxazine", which uses vanillin, 4,4-diaminodiphenyl ether and paraformaldehyde As raw materials, nitrogen and oxygen co-doped porous carbon materials are prepared by soft templates and activation processes. They are used as electrodes for supercapacitors and have good cycle charge and discharge performance. However, due to the cumbersome preparation method and high cost, the actual It is more difficult to apply in industrial production
[0005] Invention patent CN109748279 A discloses "a microporous carbon material based on benzoxazine porous polymer and its preparation method and application", the method firstly adds amine, phenol and paraformaldehyde into the organic solvent, stirs and heats to reflux Synthesize benzoxazine porous polymer by reaction, then mix and impregnate the obtained polymer with an activator, and finally activate, pickle, wash with water, and dry to obtain a microporous carbon material that can efficiently absorb carbon dioxide, but the method requires two steps The process is too cumbersome to be used in large-scale industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A polybenzoxazin-based derived carbon material adsorbing carbonyl sulfide, the preparation steps of which are as follows:

[0029] 1) First, add 3.0 g of resorcinol to 10.0 mL of deionized water, stir at room temperature until completely dissolved, and record it as solution A; add 1.4 g of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer F127 (average The relative molecular weight is about 13000) into 10.0 mL ethanol, stirred at room temperature until completely dissolved, recorded as solution B, and set aside;

[0030] 2) Add solution B into solution A, stir until completely dissolved, then add 5.4 mL of 37% formaldehyde solution, and then add 36.5 uL of 1,2-ethylenediamine, stir the reaction temperature at 35°C, and the time is 2 h, until the solution turned into a milky white liquid, transferred to a hydrothermal reaction kettle for one-step polymerization, the hydrothermal reaction temperature was 100 °C, and the time was 3 h. The obtained polymer...

Embodiment 2

[0032] A polybenzoxazin-based derived carbon material adsorbing carbonyl sulfide, the preparation steps of which are as follows:

[0033]1) First, add 3.0 g of resorcinol to 10.0 mL of deionized water, stir at room temperature until completely dissolved, and record it as solution A; add 1.4 g of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer F127 (average The relative molecular weight is about 13000) into 10.0 mL ethanol, stirred at room temperature until completely dissolved, recorded as solution B, and set aside;

[0034] 2) Add solution B into solution A, stir until completely dissolved, then add 5.4 mL of 37% formaldehyde solution, then add 56.2 uL of diethylamine, stir at 35°C for 2 h, until the solution It turned into a yellow liquid, transferred to a hydrothermal reaction kettle for one-step polymerization, the hydrothermal reaction temperature was 100°C, and the time was 3 h. The obtained polymer was dried in an oven at a temperature of 80°C, and t...

Embodiment 3

[0036] A polybenzoxazin-based derived carbon material adsorbing carbonyl sulfide, the preparation steps of which are as follows:

[0037] 1) First, add 3.0 g of resorcinol to 10.0 mL of deionized water, stir at room temperature until completely dissolved, and record it as solution A; add 1.4 g of polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer F127 (average The relative molecular weight is about 13000) into 10.0 mL ethanol, stirred at room temperature until completely dissolved, recorded as solution B, and set aside;

[0038] 2) Add solution B into solution A, stir until completely dissolved, then add 5.4 mL of 37% formaldehyde solution, then add 75.9 uL triethylamine, stir at 35°C for 2 h, until the solution It turned into a milky white liquid, and transferred to a hydrothermal reaction kettle for one-step polymerization. The hydrothermal reaction temperature was 100°C, and the time was 3 h. The obtained polymer was dried in an oven at a temperature of 80°...

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Abstract

The invention discloses a polybenzoxazine-based derived carbon material for adsorbing carbonyl sulfide and a preparation method and application thereof. The preparation method of the polybenzoxazine-based derived carbon material comprises the steps that an amine compound serves as a curing agent, a polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer P127 serves as a soft template agent, in the presence of the curing agent and the soft template agent, a phenol compound and an aldehyde compound are subjected to a one-step polymerization reaction, an obtained polymer is subjected to high-temperature carbonization pyrolysis, and the preparation is completed. The polybenzoxazine-based derived carbon material has the advantages of large specific surface area, developed micropores, high mechanical strength and the like, and has a relatively good adsorption effect on carbonyl sulfide in coke oven gas. The method has the advantages of simple preparation method, low raw material cost, no by-product and the like, and has potential industrial application value.

Description

technical field [0001] The invention relates to the technical field of adsorption and separation of carbonyl sulfide in coke oven gas, in particular to a polybenzoxazin-based derived carbon material for adsorbing carbonyl sulfide and its preparation method and application. Background technique [0002] Benzoxazine refers to a class of polymer oxazine ring aromatic polymers with good thermal stability and high carbon residue rate. Due to the mild conditions of the polymerization process, there is no need to add highly corrosive strong acids or strong bases for catalysis, and the reaction has no by-products , no release of small molecules and other advantages, it is regarded as an ideal precursor. Benzoxazine monomers undergo ring-opening polymerization under catalysis or heating conditions to produce nitrogen-containing polymers with a structure similar to phenolic resins, called polybenzoxazines. Polybenzoxazine resins are new types of phenolic resins. In addition to the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C01B32/318C08G14/073C10B53/07C10K1/00C10K1/32
CPCB01J20/20C10K1/004C01B32/318C10B53/07C10K1/32C08G14/06Y02P20/143
Inventor 王建国谢亮孔祥宇李岩峰
Owner ZHEJIANG UNIV OF TECH
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