Supported hydrochloric acid decolorizing agent as well as preparation method and decolorization process thereof

A supported reagent and decolorizing agent technology, applied in chemical instruments and methods, halogen/halogen acid, chlorine/hydrogen chloride purification, etc., can solve the problems of difficult resin handling, waste of resources, environmental pollution, etc., and achieve short production cycle and effect. Good, short depigmentation time

Inactive Publication Date: 2018-08-10
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, hydrochloric acid is decolorized and impurity-removed, and the method of producing refined hydrochloric acid is mainly to process industrial hydrochloric acid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] The components of the new loaded reagent used for hydrochloric acid decolorization are: 10% MCM-41 treated with trimethoxysilylpropylamine and trimethylchlorosilane (the specific treatment process is: 20 grams of trimethyl The oxysilylpropylamine was dissolved in 160 ml of anhydrous methylene chloride, and the solution was added to a suspension of 1600 ml of anhydrous chloroform containing 28 g of ordered mesoporous material MCM-41. The mixture was kept at 65°C Stir for 24 hours. Then the solid was filtered and washed with dichloromethane (2*200ml) and dried under vacuum at 160°C for 5 hours. Then the dried solid was added to 1000ml of anhydrous chloroform, while adding 50g of three Methylchlorosilane was stirred at room temperature for 24 hours, and then filtered to obtain a solid powder, which was washed with acetone (3*200ml) and ether (3*200ml), and dried under vacuum at 120°C for 5 hours. The above-mentioned ordered mesoporous material MCM-41 treat...

Example Embodiment

[0020] Example 2

[0021] The components of the new load-type reagent for hydrochloric acid decolorization are: 20% MCM-41 treated with trimethoxysilylpropylamine and trimethylchlorosilane (the specific treatment process is: 20 grams of trimethyl The oxysilylpropylamine was dissolved in 160 ml of anhydrous methylene chloride, and the solution was added to a suspension of 1600 ml of anhydrous chloroform containing 28 g of ordered mesoporous material MCM-41. The mixture was kept at 65°C Stir for 24 hours. Then the solid was filtered and washed with dichloromethane (2*200ml) and dried under vacuum at 160°C for 5 hours. Then the dried solid was added to 1000ml of anhydrous chloroform, while adding 50g of three Methylchlorosilane was stirred at room temperature for 24 hours, and then filtered to obtain a solid powder, which was washed with acetone (3*200ml) and ether (3*200ml), and dried under vacuum at 120°C for 5 hours. The above ordered mesoporous material MCM-41 treated with trim...

Example Embodiment

[0022] Example 3

[0023] The components of the new load-type reagent for hydrochloric acid decolorization are: 20% MCM-41 treated with trimethoxysilylpropylamine and trimethylchlorosilane (the specific treatment process is: 20 grams of trimethyl The oxysilylpropylamine was dissolved in 160 ml of anhydrous methylene chloride, and the solution was added to a suspension of 1600 ml of anhydrous chloroform containing 28 g of ordered mesoporous material MCM-41. The mixture was kept at 65°C Stir for 24 hours. Then the solid was filtered and washed with dichloromethane (2*200ml) and dried under vacuum at 160°C for 5 hours. Then the dried solid was added to 1000ml of anhydrous chloroform, while adding 50g of three Methylchlorosilane was stirred at room temperature for 24 hours, and then filtered to obtain a solid powder, which was washed with acetone (3*200ml) and ether (3*200ml), and dried under vacuum at 120°C for 5 hours. The above-mentioned ordered mesoporous material MCM-41 treated...

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PUM

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Abstract

The invention relates to a novel supported hydrochloric acid decolorizing agent as well as a preparation method and a decolorization process thereof. The decolorizing agent can be used for quite effectively removing the color of industrial hydrochloric acid; the decolorized industrial hydrochloric acid is colorless transparent liquid. A reagent is prepared from an ordered mesoporous material MCM-41 (the MCM-41 treated through trimethoxysilyl propylamine and trimethylchlorosilane), 2-p-bromomethyl bipyridine, sulfurous acid, ferrous chloride, magnesium sulfate, stannous chloride, diatomite, water and ethanol. The reagent capable of being used for decolorizing hydrochloric acid, which is provided by the invention, is simple in preparation process, short in production period and low in cost,is used for decolorizing the industrial hydrochloric acid, is short in decolorization time and good in decolorization effect, and does not decrease the content of the industrial hydrochloric acid, andthe decolorizing agent can be repeatedly recovered and utilized for multiple times.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a novel load-type hydrochloric acid decolorizer, a preparation method and a decolorization process thereof. Background technique [0002] In recent years, a large amount of by-product hydrochloric acid is produced every year in the fine chemical industry, for example, a large amount of hydrochloric acid is produced in the process of preparing compound fertilizer. Because hydrochloric acid has strong corrosiveness, it will seriously corrode iron pipelines and other equipment, resulting in the production and preparation of industrial hydrochloric acid containing a large amount of ferric ions, which makes the hydrochloric acid yellow. At the same time, in the process of compound fertilizer by-product hydrochloric acid, due to the impurity of the raw materials for the preparation of compound fertilizer, the produced hydrochloric acid will contain a large amount of bromine mole...

Claims

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Application Information

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IPC IPC(8): C01B7/07
CPCC01B7/0706
Inventor 王龙刘明国刘杨黄年玉李德江
Owner CHINA THREE GORGES UNIV
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