Piperidine type anion exchange membrane for alkaline electrolytic tank and preparation method thereof

An anion-exchange membrane and electrolytic cell technology, applied in the field of piperidine-type anion-exchange membrane and its preparation, can solve the problems of poor dimensional stability, high water absorption swelling, low ion conductivity, etc., and achieve the effect of fewer reaction steps and improved performance

Active Publication Date: 2021-04-06
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, polymers such as polysulfone and polyphenylene ether are commonly used as the main chain for membrane materials, but some polymers will degrade in alkaline environments, resulting in low ion conductivity, high water swelling, poor dimensional stability, and IEC (ion exchange capacity) uncontrollable problem

Method used

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  • Piperidine type anion exchange membrane for alkaline electrolytic tank and preparation method thereof
  • Piperidine type anion exchange membrane for alkaline electrolytic tank and preparation method thereof
  • Piperidine type anion exchange membrane for alkaline electrolytic tank and preparation method thereof

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Embodiment

[0034] Synthesis of piperidine-type three-monomer polymer: 1.41g (6mmol) of p-terphenyl was added to a 25mL three-necked flask, then 8mL of dichloromethane solution was added, followed by 0.6928g (6mmol) of N-methyl-4-piper Pyridone and 56 μL (0.6 mmol) of methyl pyruvate, after mechanical stirring for a period of time, slowly add 1 mL (9.98 mmol) of trifluoroacetic acid and 5 mL (56.5 mmol) of trifluoromethanesulfonic acid under ice bath conditions, and then the temperature of the reaction system rises gradually to room temperature. When the reaction solution became highly viscous, the reaction solution was poured into methanol to precipitate a crude polymer, then washed with potassium carbonate solution until neutral, and vacuum-dried at 60°C for 24 hours to obtain a three-monomer polymer material.

[0035] Preparation of quaternized anion-exchange membrane: Weigh 1g (3.08mmol) of the three-monomer polymer material and add it to a 50mL one-port bottle, then add 20mL DMSO, di...

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Abstract

The invention discloses a piperidine type anion exchange membrane for an alkaline electrolytic tank and a preparation method thereof, and belongs to the technical field of alkaline anion exchange membranes. The preparation method comprises the following steps: firstly, synthesizing piperidine type trimonomer polymers with different substitution degrees, then directly taking piperidone of the polymer as a grafting site to carry out quaternization on the polymer to obtain a membrane material, and preparing the membrane. The prepared membrane has good alkali stability and mechanical strength, and can be applied to an alkaline electrolytic tank.

Description

technical field [0001] The invention belongs to the technical field of alkaline anion exchange membranes, and relates to a piperidine type anion exchange membrane used in alkaline electrolytic cells and a preparation method thereof. Background technique [0002] With the increasingly prominent problems of energy shortage and environmental pollution, the development and utilization of new energy is imminent. Compared with traditional fossil fuels, hydrogen energy is an ideal alternative energy source. It has advantages such as high energy density and zero carbon emission. Among the many hydrogen production methods, the anion exchange membrane electrolysis of water (AEMWE) technology has the advantages of low cost, environmental friendliness and high stability of hydrogen production, and has received extensive attention in recent years. [0003] The basic anion exchange membrane is one of the core components of the basic anion exchange membrane electrolytic cell, usually mad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08G61/12C08L65/00
CPCC08G61/122C08G2261/122C08G2261/312C08G2261/3221C08G2261/72C08J5/2256C08J2365/00
Inventor 焉晓明赵俊贺高红高莉刘杰潘昱
Owner DALIAN UNIV OF TECH
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