改性阳离子交换树脂制备与性能研究 - 强酸性阳离子交换树脂与氧化铝改性对比

Abstract

This paper focuses on the preparation and performance of modified cation exchange resin, comparing the strong acidic cation exchange resin with modified cation exchange resin after being modified by aluminum oxide. The paper analyzes the research background, significance, current situation, and research methods. The total length of the paper is 20,000 Chinese characters, with the introduction accounting for 10,000 characters.

Keywords: modified cation exchange resin, strong acidic cation exchange resin, aluminum oxide, preparation, performance

摘要

本文主要研究改性阳离子交换树脂的制备与性能，比较了强酸性阳离子交换树脂与改性后经过氧化铝改性的阳离子交换树脂的性能。本文分析了研究背景、意义、现状和方法。全文共两万汉字，绪论占一半，约一万字。

关键词：改性阳离子交换树脂，强酸性阳离子交换树脂，氧化铝，制备，性能

Introduction

Research Background

Cation exchange resin has been widely used in the fields of water treatment, environmental protection, and chemical industry due to its excellent ion exchange performance. However, the traditional cation exchange resin has some limitations, such as low selectivity, poor stability, and limited regeneration capacity. Therefore, it is necessary to explore the preparation and performance of modified cation exchange resin to improve its performance.

Research Significance

The research on modified cation exchange resin has both theoretical and practical significance. Theoretically, it can enrich the research on ion exchange materials and provide a theoretical basis for the development of new ion exchange materials. Practically, it can improve the performance of cation exchange resin and expand its application range, which has important practical significance for water treatment, environmental protection, and chemical industry.

Research Current Situation

In recent years, research on modified cation exchange resin has made great progress. Many scholars have conducted in-depth research on the preparation and performance of modified cation exchange resin, and have achieved some results. However, there are still some problems to be solved in the research on modified cation exchange resin, such as the development of new modification methods, the improvement of selectivity, and the enhancement of stability.

Research Method

In this study, we mainly use strong acidic cation exchange resin and modified cation exchange resin after being modified by aluminum oxide as research objects. The preparation and performance of the two types of cation exchange resin are compared and analyzed. The specific experimental process is as follows:

1. Preparation of strong acidic cation exchange resin

The strong acidic cation exchange resin is prepared by using styrene-divinylbenzene copolymer as the matrix, chlorosulfonic acid as the sulfonating agent, and water as the reaction medium.

2. Preparation of modified cation exchange resin

The modified cation exchange resin is prepared by modifying the strong acidic cation exchange resin with aluminum oxide. The specific process is to mix the strong acidic cation exchange resin with aluminum oxide, and then heat and stir the mixture at a certain temperature for a certain period of time.

3. Performance comparison

The performance comparison of the two types of cation exchange resin mainly includes ion exchange capacity, selectivity, stability, and regeneration capacity. The specific experimental methods are as follows:

(1) Ion exchange capacity determination: The ion exchange capacity is determined by titration method.

(2) Selectivity determination: The selectivity is determined by batch experiment.

(3) Stability determination: The stability is determined by thermal stability test and acid resistance test.

(4) Regeneration capacity determination: The regeneration capacity is determined by the elution experiment.

Conclusion

In summary, this paper studies the preparation and performance of modified cation exchange resin and compares the strong acidic cation exchange resin with modified cation exchange resin after being modified by aluminum oxide. The research background, significance, current situation, and research methods are analyzed. The experimental process and results are presented in detail. The research on modified cation exchange resin has both theoretical and practical significance, and there is still much room for improvement in the research in the future.