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Method for preparing quaternary ammonium hydroxide by using quaternary ammonium salt

A technology of quaternary ammonium base and quaternary ammonium salt, which is applied in the field of preparation of quaternary ammonium base, can solve difficult problems such as handling, and achieve the effect of reducing production costs

Inactive Publication Date: 2004-12-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, to convert this ion exchange resin from the acid group Y - Type conversion to base radical OH - Type requires a large amount of strong base, and produces a large amount of Y - and OH - waste water, which is difficult to treat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the acid group Cl - type anion exchange resin into RO - type anion exchange resin

[0034] In addition to 15% (Wt) of N (CH 3 ) 4 Except that 205 g of OH aqueous solution replaced the NaOH aqueous solution in Comparative Example 1, the others were the same as Comparative Example 1. The results are shown in Table 1.

Embodiment 2

[0035] Embodiment 2: the acid group Cl - type anion exchange resin into RO - type anion exchange resin

[0036] 50g type I strong basic anion exchange resin (chlorine type), Cl can be exchanged in the resin - The number of moles is 85mmol, soak and stir with 141g of 22.4wt% trimethylbenzyl isopropanolammonium isopropanol solution. RO in solution - The number of moles is 170mmol, and after 1 hour and 2 hours, samples are taken respectively, and the Cl in the solution is measured. - Concentration and RO - concentration. The results are shown in Table 1.

Embodiment 3

[0038] Except that trimethylbenzyl isopropanolate ammonium isopropanol solution is replaced with tetrapropyl isopropanolate ammonium isopropanol solution, other is the same as embodiment 2. The results are shown in Table 1.

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Abstract

The method for preparing quaternary ammonium base by using quaternary ammonium salt includes the following steps: firstly, using alkyl alcohol base quaternary ammonium compound solution to treat ate Y(-) type strong base anion-exchange resin to convert it into base radical RO(-) ion type, then using obtained resin to treat the quaternary ammonium salt dissolved in the solvent to obtain the correspondent alkyl alcohol base quaternary ammonium compound, finally, adding proper quantity of water in the above-mentioned quaternary ammonium compound solution so as to obtain the correspondent quaterary ammonium base solution.

Description

technical field [0001] The invention relates to a method for preparing a quaternary ammonium base, in particular to a method for preparing a quaternary ammonium base from a quaternary ammonium salt through an ion exchange method. Background technique [0002] The quaternary ammonium base is a kind of strong organic base, which can be used with the general formula R 1 R 2 R 3 R 4 N + Oh - Said that its alkalinity is higher than that of sodium hydroxide or potassium hydroxide, and it plays an important role in organic synthesis and inorganic synthesis. For example, in the synthesis of molecular sieves, quaternary ammonium bases are widely used as templates. [0003] Quaternary ammonium bases are generally obtained by converting the acid ions in the corresponding quaternary ammonium salts into hydroxide ions by appropriate methods, that is, <chemistry num="001"> <chem file="01143458_cml001.xml" / > < / chemistry> , where R 1 , R 2 , R 3 , R 4 are the...

Claims

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Application Information

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IPC IPC(8): C07C209/68C07C211/63
Inventor 张明森柯丽郝玉春杨菁冯炎
Owner CHINA PETROLEUM & CHEM CORP
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