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High-temperature-resistant fluorine-containing resin catalyst and preparation method thereof

A catalyst, high temperature resistant technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc. shedding and other problems, to achieve the effect of reducing water treatment costs, low effluent conductivity, and not easy to fall off

Inactive Publication Date: 2013-04-10
KAIRUI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when the high-temperature resistant cation exchange resin catalysts produced at home and abroad react at high temperatures above 150°C, the resin catalysts contain sulfonic acid groups, which are easy to fall off under high-temperature reaction conditions, and the fallen sulfonic acid groups become sulfonic acid ions in water, making The conductivity of circulating water is high, which affects the recycling of circulating water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 1). Swelling

[0057] Select 200 g of polymerized white balls of commercially available D008 resin catalyst produced by Kairui Chemical Co., Ltd., and fully swell with dichloroethane solvent;

[0058] 2).Acylation reaction

[0059]Using dichloroethane as a solvent, adding aluminum chloride and reacting with the swollen polymerized white balls in step 1), adding o-fluorobenzoyl chloride to the polymerized white balls for acylation, the temperature is 60°C, and the reaction time is 10 hours;

[0060] Polymeric white ball: aluminum chloride: o-fluorobenzoyl chloride (molar ratio) = 1: 1: 0.4;

[0061] 3).Halogenation reaction

[0062] Add chlorine gas to the acylated product in step 2) to carry out halogenation reaction at a temperature of -5°C, and control the molar ratio between the benzene ring and the chlorine element in the reactant to be 1:0.2.

[0063] 4) Sulfonation reaction

[0064] The halogenation reaction product obtained in step 3) is added with excess sul...

Embodiment 2

[0066] Acylation ratio: polymerized white balls: aluminum chloride: the molar ratio of o-fluorobenzoyl chloride=1:1:1.5;

[0067] Others are the same as in Example 1, and the resulting product number is KRB-2.

Embodiment 3

[0069] Acylation ratio: polymerized white balls: aluminum chloride: the molar ratio of o-fluorobenzoyl chloride=1:1:1;

[0070] Others are the same as in Example 1, and the resulting product number is KRB-3.

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PUM

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Abstract

The invention provides a high-temperature-resistant fluorine-containing resin catalyst which is prepared by the steps of: with polymerized white balls of the resin catalyst as raw materials, fully swelling the white balls with a solvent, acylating with an acylating agent, adding a halogen element for halogenating, and finally introducing sulfo groups through sulfonation of a sulfonating agent. The high-temperature-resistant fluorine-containing resin catalyst is suitable for a reaction process with a reaction temperature of higher than 150 DEG C, and can be used for a long time at a temperature of below 200 DEG C. The invention also provides a preparation method of the high-temperature-resistant fluorine-containing resin catalyst.

Description

technical field [0001] The invention relates to a resin catalyst, in particular to a high temperature resistant resin catalyst and a preparation method thereof. Background technique [0002] The sulfonic acid group on the sulfonated cation exchange resin is easy to fall off under the reaction conditions, especially when the temperature is high, resulting in the protonation of the aromatic ring of the cation exchange resin. Since the catalytic activity of the styrene-divinylbenzenesulfonic acid resin catalyst is directly proportional to the concentration of the active group sulfonic acid group, the shedding of the sulfonic acid group will lead to a decrease in the activity of the resin catalyst. Electron-absorbing groups can reduce the desulfonation rate. Therefore, an electron-withdrawing group is generally introduced on the benzene ring to prevent and reduce the shedding of the sulfonic acid group and increase the thermal stability of the sulfonic acid group in the catalyt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/10C07C31/12C07C29/04
Inventor 王金明刘文飞张勇毛进池
Owner KAIRUI ENVIRONMENTAL PROTECTION TECH