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Synthetic method of strong-basic anion exchange resin used in compact bed

A technology of exchange resin and synthesis method, applied in the direction of anion exchange, ion exchange, chemical instruments and methods, etc., can solve the problem of large difference in particle size of cross-linked polystyrene white sphere skeleton, different resin particle size, and inapplicability to a wide range of promotion and other issues, to achieve the effects of fine granularity, short diffusion path during exchange, and low cost

Active Publication Date: 2016-12-21
ZHEJIANG XINGYU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in this invention, there is a problem that the process is complicated, and the particle size of the cross-linked polystyrene white ball skeleton itself varies greatly, resulting in different particle sizes of the final resin, which is not suitable for large-scale promotion.

Method used

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  • Synthetic method of strong-basic anion exchange resin used in compact bed
  • Synthetic method of strong-basic anion exchange resin used in compact bed
  • Synthetic method of strong-basic anion exchange resin used in compact bed

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1: a kind of synthetic method of solid bed strong basic anion exchange resin comprises the following steps:

[0056] Using a homogeneous wet chemical method to synthesize a cross-linked polystyrene white ball skeleton with a particle size of 100-150 μm on the surface of an inert crystal nucleus, the inert crystal nucleus includes an inert material with a highly uniform particle size such as silicon dioxide;

[0057]Adding chloromethyl ether as a chloromethylation reagent to perform a Friedel-Crafts reaction with the benzene ring in the original styrene in the crosslinked polystyrene white ball to obtain an intermediate product A;

[0058] The intermediate product A is subjected to an amination reaction with a tertiary amine containing a long carbon chain to generate a strongly basic anion exchange resin with a particle diameter of 180-280 μm.

[0059] Swell the cross-linked polystyrene white ball skeleton in the chloromethyl ether and add anhydrous ferric chl...

Embodiment 2

[0080] Embodiment 2: a kind of synthetic method of solid bed strong basic anion exchange resin comprises the following steps:

[0081] Using a homogeneous wet chemical method to synthesize a cross-linked polystyrene white ball skeleton with a particle size of 100-150 μm on the surface of an inert crystal nucleus, the inert crystal nucleus includes an inert material with a highly uniform particle size such as silicon dioxide;

[0082] Adding chloromethyl ether as a chloromethylation reagent to perform a Friedel-Crafts reaction with the benzene ring in the original styrene in the crosslinked polystyrene white ball to obtain an intermediate product A;

[0083] The intermediate product A is subjected to an amination reaction with a tertiary amine containing a long carbon chain to generate a strongly basic anion exchange resin with a particle diameter of 180-280 μm.

[0084] Swell the cross-linked polystyrene white ball skeleton in the chloromethyl ether and add anhydrous ferric ch...

Embodiment 3

[0105] Embodiment 3: a kind of synthetic method of solid bed strong basic anion exchange resin comprises the following steps:

[0106] Using a homogeneous wet chemical method to synthesize a cross-linked polystyrene white ball skeleton with a particle size of 100-150 μm on the surface of an inert crystal nucleus, the inert crystal nucleus includes an inert material with a highly uniform particle size such as silicon dioxide;

[0107] Adding chloromethyl ether as a chloromethylation reagent to perform a Friedel-Crafts reaction with the benzene ring in the original styrene in the crosslinked polystyrene white ball to obtain an intermediate product A;

[0108] The intermediate product A is subjected to an amination reaction with a tertiary amine containing a long carbon chain to generate a strongly basic anion exchange resin with a particle diameter of 180-280 μm.

[0109] Swell the cross-linked polystyrene white ball skeleton in the chloromethyl ether and add anhydrous ferric ch...

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Abstract

The invention belongs to the technical field of synthetic methods of ion exchange resin and especially relates to a synthetic method of strong-basic anion exchange resin used in a compact bed. The synthetic method includes the steps of: 1) synthesizing a crosslinked polystyrene white sphere framework being 100-150 nm in particle size on the surface of inert crystal nucleus in a homogenous-phase wet chemical manner; adding chloromethyl ether as a chloromethylation reagent to carry out a Friedel-Crafts reaction to benzene rings in the styrene in the crosslinked polystyrene white spheres to obtain an intermediate product A; 2) performing an amination reaction to the intermediate product A with a tertiary amine containing a long carbon chain to generate the strong-basic anion exchange resin being 180-280 [mu]m in particle size. The framework synthetic method is novel and unique. The exchange resin is fine and uniform in particle size, has large specific surface area, is short in diffusion path and has high exchange speed during exchange, and is low in cost and has good application effects. The exchange resin can satisfy application demands in the compact bed.

Description

technical field [0001] The invention belongs to the technical field of synthesis methods of ion exchange resins, in particular to a synthesis method of strong basic anion exchange resins for practical use. Background technique [0002] With the continuous development and maturity of ion exchange technology, the application field of strong basic anion exchange resin is gradually expanding, and it has been widely used in water treatment, material purification and solid phase catalytic synthesis and other fields. However, in the traditional process of using chloromethyl ether to prepare strong basic anion exchange resin, the raw material chloromethyl ether has strong carcinogenicity, which seriously affects the health of the staff and the safety of the surrounding environment. [0003] The Chinese invention patent with the patent publication number CN 103755846 A and the publication date of 2014.04.30 discloses a method for synthesizing a strongly basic anion exchange resin, us...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08F8/44C08F8/24B01J41/14
CPCB01J41/14C08F8/44C08F212/08C08F8/24C08F212/36
Inventor 隋晓琳周明徐斌王义平
Owner ZHEJIANG XINGYU ENVIRONMENTAL TECH CO LTD
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