Preparation method of onium hydroxide

An oxide, onium hydrogen technology, applied in chemical instruments and methods, preparation of amino compounds from amines, organic chemistry, etc., can solve the problems of complex electrolysis equipment, by-product generation, etc., to reduce production costs, shorten the time of downtime, The effect of continuous operation for a long time
CN104292114AActive Publication Date: 2015-01-21GUANGZHOU DAYOU FINE CHEM PLANT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU DAYOU FINE CHEM PLANT
Publication Date
2015-01-21

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Abstract

The invention provides a preparation method of an onium hydroxide represented by formula I. The method comprises the following steps: sending an aqueous solution of onium salt represented by formula II into a bipolar membrane electrodialysis apparatus, and carrying out bipolar membrane electrodialysis to obtain an aqueous solution of the onium hydroxide represented by formula I, wherein a neutralizing liquid is sent into the acid chamber of the bipolar membrane electrodialysis apparatus, and contains a substance, and the substance and HX undergo an acid-base reaction. The preparation method of the onium hydroxide has the advantages of long continuous running time of the bipolar membrane electrodialysis apparatus, production cost reduction and production efficiency increase. The onium hydroxide prepared through the method has purity and good quality.
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Description

technical field

[0001] The invention relates to a method for preparing onium hydroxide, in particular, the invention relates to a method for preparing onium hydroxide by using a bipolar membrane electrodialysis method. Background technique

[0002] Quaternary ammonium base is an important organic base with a wide range of uses. It can be used as a cleaning agent, etching agent and polishing agent for integrated circuit boards in the electronics industry, and can also be used as an aid and catalyst in oil refining and chemical engineering. Moreover, quaternary ammonium bases (such as tetrapropylammonium hydroxide and tetraethylammonium hydroxide) are irreplaceable alkali sources and templates in the synthesis of titanium-silicon molecular sieves, while titanium-silicon molecular sieves have good catalytic performance for directional oxidation. It is an indispensable catalyst in the production of hydroquinone, cyclohexanone oxime and propylene oxide.

[0003] At present, the ...

Claims

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