Method for electrolytic synthesis of siloxane

A technology of electrolytic synthesis and siloxane, applied in the direction of electrolysis process, electrolysis components, electrolysis organic production, etc., can solve the problems of waste of resources, high price, high energy consumption, etc., to reduce production energy consumption, low price, and improve production efficiency Effect

Inactive Publication Date: 2014-07-30
罗凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As we all know, in the traditional organosilicon synthesis method introduced above, chlorosilane is also synthesized from simple metal silicon, and these metal silicon raw materials also need to consume a large amount of coal, electricity, and emit CO gas. Industry's high energy consumption and greenhouse gas emissions are not helping
[0020] In summary, the existing methods for preparing organosilicon compounds all have the problems of high energy consumption, high price, waste of resources, and large pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A method for electrolytically synthesizing siloxanes:

[0045] At room temperature and pressure, with SiO 2 minerals and alkylating agents as raw materials, in an electrolyte system composed of aprotic polar organic solvents and electrolytes, through an electrolytic cell or an electrolytic cell with a cathode and an anode for an electrolysis reaction, the synthesis of siloxane-containing material, and finally the siloxane in the material is separated to obtain the siloxane product.

Embodiment 2

[0047] A separated electrolytic cell is used for electrolysis, wherein the anode is made of high-purity nickel, the cathode is made of graphite plate, and the electrolytic cell is equipped with a current / voltage stabilizer. After the electrolytic cell is cleaned, an electrolyte composed of an aprotic polar organic solvent and an electrolyte is added under nitrogen protection. The electrolyte consists of 500 g of tetrabutylammonium trifluoromethanesulfonate and 5000 g of tetrahydrofuran. Under nitrogen protection, 32g methanol and 600g quartz sand were respectively added from the feeding port. Set the output voltage to be constant at 3V, start the constant current / voltage stabilizer, and perform the electrolytic reaction at room temperature and under the protection of nitrogen for 120min. After the reaction, the materials in the electrolytic cell are released through the filter screen, and the filter residue is unreacted quartz sand (residual quartz sand can be used again). )...

Embodiment 3

[0049] A separated electrolytic cell is used for electrolysis, in which the anode is made of high-purity nickel, the cathode is made of carbon plate, and the electrolytic cell is equipped with a current / voltage stabilizer. After the electrolytic cell is cleaned, an electrolyte composed of an aprotic polar organic solvent and an electrolyte is added under nitrogen protection. The electrolyte consisted of 460 g of tetraethylammonium trifluoromethanesulfonate and 5200 g of acetonitrile. Under the protection of nitrogen, 35g of methanol and 540g of quartz sand were respectively added from the feeding port. Set the output voltage to be constant at 2.9V, start the constant current / voltage stabilizer, and perform the electrolytic reaction at room temperature under the protection of nitrogen for 120min. After the reaction, the materials in the electrolytic cell are released through the filter screen, and the filter residue is unreacted quartz sand (residual quartz sand can be used ag...

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PUM

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Abstract

The invention relates to a method for electrolytic synthesis of siloxane, belonging to the technical field of organosilicon chemistry. The method disclosed by the invention comprises the following steps of carrying out an electrolysis reaction on minerals containing SiO2 and an alkylating agent as raw materials at room temperature and normal pressure in an electrolyte solution comprising an aprotic polar organic solvent and an electrolyte by an electrolytic cell or an electrolytic bath with a cathode and an anode and synthesizing to obtain the silicone-containing materials, and finally the separating siloxane in the silicone-containing materials to obtain siloxane products. According to the method for electrolytic synthesis of siloxane, production costs and energy consumptions are greatly reduced, the production efficiency is improved; no pollution to the environment is generated and the synthesis process is environment friendly; a plurality of silicone products are obtained by flexibly choosing alkylating agents. The method disclosed by the invention has the advantages of high converted rate and product quality.

Description

technical field [0001] The invention relates to a method for synthesizing siloxane, more specifically, the invention relates to a method for electrolytically synthesizing siloxane, which belongs to the technical field of organosilicon chemistry. Background technique [0002] Organosilicon, that is, organosilicon compound, refers to a compound that contains Si-O bonds and at least one organic group is directly connected to a silicon atom. It is customary to combine those organic groups with oxygen, sulfur, nitrogen, etc. Compounds in which silicon atoms are linked are also referred to as organosilicon compounds. Among them, the polysiloxane composed of silicon-oxygen bond (-Si-0-Si-) as the skeleton is the most numerous, the deepest researched and the most widely used category of organosilicon compounds, accounting for more than 90% of the total amount. . [0003] The basic structural unit of silicone products is composed of Si-O chain links, and the side chains are connect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/04C25B3/25
CPCC25B3/29
Inventor 罗凯
Owner 罗凯
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