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Preparation method and application of tin tetrachloride

A compound and polymer technology, applied in the preparation of organic compounds, tin chloride, chemical instruments and methods, etc., can solve the problems of chlorine gas channel blockage, short residence time, and large environmental impact

Active Publication Date: 2018-10-26
启东市强强贸易有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the reaction between tin and chlorine is an exothermic reaction, the reaction temperature quickly exceeds the melting point of tin (231.5°C) in a short period of time, so the melting of tin often leads to blockage of the chlorine gas channel during the reaction process, resulting in shutdown
In addition, in the reaction process, the contact area of ​​chlorine gas on the surface of tin is small and the residence time is short, resulting in low utilization rate of chlorine gas and affecting the yield of tin tetrachloride.
At the same time, due to the high chlorine content in the tail gas, it has a great impact on the environment

Method used

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  • Preparation method and application of tin tetrachloride
  • Preparation method and application of tin tetrachloride

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preparation example Construction

[0029] The first aspect of the present invention provides a kind of preparation method of tin tetrachloride, comprises the following steps:

[0030] Add tin, tin tetrachloride solution, and mesoporous silica to the reaction kettle, and then introduce chlorine gas, and control the temperature in the kettle to be lower than 100°C, control the pressure at 0.5MPa, and control the flow rate of chlorine gas at 31m 3 / h, reaction 16h; Get tin tetrachloride;

[0031] Wherein, the mesoporous silica is SBA-15 mesoporous silica; the weight ratio of the tin to the tin tetrachloride solution and the mesoporous silica is 1: (0.5-1.5): (0.2-0.7).

[0032] In one embodiment, the weight ratio of the tin to the tin tetrachloride solution and the mesoporous silica is 1:0.8:0.4.

[0033] In the present invention, because the reaction of tin and chlorine is an exothermic reaction and the solubility of chlorine in tin tetrachloride is large, using tin tetrachloride as the reaction medium not only...

Embodiment 1

[0052] The preparation method of the tin tetrachloride is to add tin, tin tetrachloride solution, and mesoporous silica into the reaction kettle, and then feed chlorine gas, and control the temperature in the kettle to be lower than 100°C, and the pressure to be controlled at 0.5MPa , the flow of chlorine gas is controlled at 31m 3 / h, reaction 16h; Get tin tetrachloride;

[0053] Wherein, the mesoporous silica is SBA-15 mesoporous silica; the weight ratio of the tin to the tin tetrachloride solution and the mesoporous silica is 1:0.8:0.4;

[0054] The SnCl 4 / The preparation method of macromolecule compound, comprises the following steps:

[0055] (1) benzoxazine monomer: melamine, octa(aminophenyltrioxysilane), phenol, and methanol / water solution with a mass fraction of 50% are added to the reactor in molar ratio, stirred, and heated to 55° C., Add formaldehyde solution dropwise, after the dropwise addition, raise the temperature to 85°C, keep the temperature for 7 hours,...

Embodiment 2

[0061] The preparation method of the tin tetrachloride is to add tin, tin tetrachloride solution, and nano silicon dioxide into the reaction kettle, and then feed chlorine gas, and control the temperature in the kettle to be lower than 100°C, and the pressure to be controlled at 0.5MPa, Chlorine gas flow is controlled at 31m 3 / h, reaction 16h; Get tin tetrachloride;

[0062] Wherein, the nano-silica is purchased from Hangzhou Wanjing New Material Co., Ltd.; the weight ratio of the tin to the tin tetrachloride solution and the nano-silica is 1:0.8:0.4;

[0063] The SnCl 4 / The preparation method of macromolecule compound, comprises the following steps:

[0064] (1) benzoxazine monomer: melamine, octa(aminophenyltrioxysilane), phenol, and methanol / water solution with a mass fraction of 50% are added to the reactor in molar ratio, stirred, and heated to 55° C., Add formaldehyde solution dropwise, after the dropwise addition, raise the temperature to 85°C, keep the temperature...

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Abstract

The invention provides a preparation method of tin tetrachloride. The preparation method comprises the following steps: adding tin, tin tetrachloride solution and mesoporous silicon dioxide into a reaction kettle, introducing chlorine, controlling the temperature in the kettle to be less than 100 DEG C, controlling the pressure at 0.5MPa, controlling the flow rate of the chlorine at 31m<3> / h, andreacting for 16 hours; and obtaining tin tetrachloride, wherein mesoporous silicon dioxide is SBA-15 mesporous silicon dioxide; and a weight ratio of tin to tin tetrachloride solution to mesoporous silicon dioxide is 1: (0.5 to 1.5): (0.2 to 0.7).

Description

technical field [0001] The present invention relates to a kind of preparation method of inorganic compound, specifically, the present invention relates to a kind of preparation method and application of tin tetrachloride. Background technique [0002] Tin tetrachloride is the main raw material of organotin compounds, and the international consumption of organotin compounds used in PVC products and heat stabilizers is increasing year by year. Anhydrous tin tetrachloride can be used as a raw material and chlorinating agent for organotin synthesis, coal softener in the textile industry, manufacturing blueprints, photosensitive paper, additives for lubricating oil, and tin plating. At present, most of the contracts for tin tetrachloride are intermittent operations in which tin particles or anhydrous stannous chloride react with chlorine gas. [0003] Because the reaction of tin and chlorine is an exothermic reaction, the reaction temperature exceeds the melting point of tin (23...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C01G19/08C07C51/02C07C59/08C07C67/08C07C69/68
CPCB01J31/06B01J31/26C01G19/08C07C51/02C07C51/41C07C67/08C07C69/68C07C59/08
Inventor 杨学强张建根
Owner 启东市强强贸易有限公司
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