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Preparation method of low viscosity antimony pentoxide hydrosol

A technology of antimony pentoxide and antimony trioxide, which is applied in chemical instruments and methods, antimony oxide/antimony hydroxide/antimony oxyacid, inorganic chemistry, etc., can solve the problem of high viscosity, achieve less dosage and better operation Convenience and ease of packaging

Active Publication Date: 2018-11-13
锡矿山闪星锑业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN1074945A discloses a kind of chlorination hydrolysis method to prepare colloidal antimony pentoxide, is to use SbCl 5 The solution is mixed with 3 to 10 times of water for hydrolysis, but there is a problem of disposal of a large amount of chlorine-containing wastewater in the hydrolyzed solution
However, the resulting product is limited to antimony pentoxide hydrosols with a concentration of 40% and below, and the viscosity of the antimony pentoxide hydrosol that is further concentrated to a concentration of 50% will be higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) After heating 2500L of water to 50°C, add 400kg (1372mol) antimony trioxide for mixing to obtain antimony trioxide hydrosol, continue heating and stirring until the temperature of antimony trioxide hydrosol is 70°C, stop Heating, then adding 310L (hydrogen peroxide 2833mol) of hydrogen peroxide at a speed of 3L / min, and reacting at 80°C for 3h to obtain a water-soluble antimony pentoxide sol (specific gravity 1.113);

[0037] (2) Concentrate the water-soluble antimony pentoxide sol obtained in step (1) at 100°C until the specific gravity of the sol is 1.715, and add triethanolamine step by step during the concentration process. After the concentration is completed, within 25 minutes, immediately Cool to 60°C, and then use monoethanolamine to adjust the pH value to 6.5 to obtain 815 kg of low-viscosity antimony pentoxide hydrosol; the specific operation of adding triethanolamine step by step is: when the specific gravity of the sol reaches 1.240, add 10 kg of triethan...

Embodiment 2

[0040] (1) After heating 4500L water to 52°C, add 750kg (2573mol) antimony trioxide for mixing to obtain antimony trioxide hydrosol, continue heating and stirring until the temperature of antimony trioxide hydrosol is 75°C, stop Heating, then adding 616L (hydrogen peroxide 5628mol) of hydrogen peroxide at a rate of 2L / min, and reacting at 85°C for 3.5h to obtain a water-soluble antimony pentoxide sol (specific gravity 1.115);

[0041] (2) Concentrate the water-soluble antimony pentoxide sol obtained in step (1) at 100°C until the specific gravity of the sol is 1.740, and add triethanolamine step by step during the concentration process. After the concentration is completed, within 20 minutes, immediately Cool to 60°C, and then use monoethanolamine to adjust the pH value to 6.4 to obtain 1455 kg of low-viscosity antimony pentoxide hydrosol; the specific operation of adding triethanolamine step by step is: when the specific gravity of the sol reaches 1.290, add 19.5 kg of trietha...

Embodiment 3

[0044] (1) After heating 4400L of water to 53°C, add 800kg (2744mol) antimony trioxide for mixing to obtain antimony trioxide hydrosol, continue heating and stirring until the temperature of antimony trioxide hydrosol is 69°C, stop Heating, then adding 720L (hydrogen peroxide 6580mol) of hydrogen peroxide at a speed of 3L / min, and reacting at 70°C for 4h to obtain a water-soluble antimony pentoxide sol (specific gravity 1.091);

[0045] (2) Concentrate the water-soluble antimony pentoxide sol obtained in step (1) at 100°C until the specific gravity of the sol is 1.750, and add triethanolamine step by step during the concentration process. After the concentration is completed, within 25 minutes, immediately Cool to 55°C, and then adjust the pH value to 6.6 with diethanolamine to obtain 1530kg of low-viscosity antimony pentoxide hydrosol; the specific operation of adding triethanolamine step by step is: when the specific gravity of the sol reaches 1.275, add 17kg of triethanolami...

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Abstract

The invention provides a preparation method of a low-viscosity antimony pentoxide hydrosol. The method comprises the following steps: (1) after water is heated, adding antimony trioxide for mixing, continuing heating and stirring, and adding hydrogen peroxide for reaction; and (2) concentrating, adding a stabilizer stepwise in the concentration process, immediately cooling after the concentrationis completed, and then adjusting the pH value to obtain the low-viscosity cerium pentoxide hydrosol. The method has the advantages that less stabilizer is used, and the prepared low-viscosity antimonypentoxide hydrosol is clearly milk white, yellowish and lustrous and has good fluidity, wherein the content of antimony pentoxide is 48-54%, the pH value is 6.1-6.8, the viscosity (25 DEG C) is lessthan 15mPa.s, the specific gravity (at room temperature) is 1.751-1.849, good stability is realized, and the direct yield of bismuth pentoxide from hydrosol to organosol is greater than or equal to 98.5%. The preparation method provided by the invention is simple, convenient to operate, low in cost, and environment-friendly.

Description

technical field [0001] The invention relates to a preparation method of antimony pentoxide hydrosol, in particular to a preparation method of low-viscosity antimony pentoxide hydrosol. Background technique [0002] As a national strategic material, antimony is used in the same amount as industrial monosodium glutamate, but antimony products are non-renewable after use, which is a typical scarce resource. Converting antimony into antimony pentoxide hydrosol will increase the utilization rate of antimony. Antimony pentoxide hydrosol is mainly used in fabrics, coatings, non-woven fabrics, adhesives, fibers and other materials as a flame retardant synergist and as a passivator in the petrochemical industry. It has high dispersion, good fluidity, and small particle size. . [0003] The general preparation method of antimony pentoxide hydrosol is to add an oxidizing agent (such as H 2 o 2 ) to oxidize antimony trioxide to antimony pentoxide, and the antimony pentoxide generated...

Claims

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Application Information

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IPC IPC(8): C01G30/00
CPCC01G30/005C01P2006/22
Inventor 欧阳慧单桃云廖光荣邓卫华欧阳彬廖佳乐曾雁
Owner 锡矿山闪星锑业有限责任公司
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