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Preparation method of styrene-divinylbenzene copolymer hydrophobic catalyst support

A technology of divinylbenzene and catalyst carrier, applied in the field of preparation of organic polymer compounds, can solve the problems of poor hydrophobic stability, inability to meet engineering requirements, poor catalytic stability, etc., and achieve the effect of expanding production

Inactive Publication Date: 2015-01-07
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pt / SDB has become the kind of current key research and application, but the preparation method of prior art mainly still has the following problems: SDB hydrophobic catalyst carrier hydrophobic stability is poor, the catalytic activity of SDB hydrophobic catalyst is insufficient and catalytic stability is relatively poor, and catalyst Due to the shortcomings of small particle size and diameter, it cannot meet the engineering requirements, so it is very necessary to carry out research on the preparation of large particle size (φ2~5mm) SDB hydrophobic catalyst carrier

Method used

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  • Preparation method of styrene-divinylbenzene copolymer hydrophobic catalyst support
  • Preparation method of styrene-divinylbenzene copolymer hydrophobic catalyst support
  • Preparation method of styrene-divinylbenzene copolymer hydrophobic catalyst support

Examples

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Effect test

Embodiment 1

[0035] The preparation method of styrene-divinylbenzene copolymer hydrophobic catalyst carrier, the steps are:

[0036] Add 200g of deionized water, 0.5g of polyvinyl alcohol-1799, 0.5g of calcium phosphate, and 0.06g of sodium dodecylbenzenesulfonate into a three-necked flask to form a uniform water phase, stir, and heat to 30°C. After all dissolved, then mixed 10gSt (ie styrene), 13gDVB (ie divinylbenzene), 0.2gBPO (ie benzoyl peroxide), 15.8g toluene, 12.4g n-heptane and 11.6g di Add ethyl chloride into the three-necked flask, adjust the required speed to 100rpm / min, heat to 85°C, and carry out suspension polymerization reaction under stirring. After 8 hours of reaction time, filter, and the solid is styrene-divinylbenzene copolymer The crude product; the solid is washed with deionized water and absolute ethanol sequentially, and then the solid is extracted in a Soxhlet extractor with acetone 5 times the quality of the solid, filtered, and then the solid is sequentially Wa...

Embodiment 2

[0039] The preparation method of styrene-divinylbenzene copolymer hydrophobic catalyst carrier, the steps are:

[0040] Add 200g of deionized water, 0.35g of polyvinyl alcohol-2099, 0.5g of calcium phosphate, and 0.06g of sodium dodecylbenzenesulfonate into a three-necked flask to form a uniform water phase, stir, and heat to 30°C. After all dissolved, add 10gSt, 13gDVB, 0.2gBPO, 15.8g toluene, 12.4g n-heptane and 11.6g dichloroethane into the three-necked flask, adjust the required speed to 100rpm / min, and heat to Suspension polymerization was carried out under stirring at 85°C. After a reaction time of 7 hours, it was filtered, and the solid was the crude product of styrene-divinylbenzene copolymer; the solid was washed with deionized water and absolute ethanol in sequence, and then Extract the solid in a Soxhlet extractor for 48 hours with acetone three times the mass of the solid, then filter the solid, then wash the solid with methanol and deionized water in sequence, the...

Embodiment 3

[0043] The preparation method of styrene-divinylbenzene copolymer hydrophobic catalyst carrier, the steps are:

[0044] Add 200g of deionized water, 0.2g of polyvinyl alcohol-2499, 0.5g of calcium phosphate, and 0.06g of sodium dodecylbenzenesulfonate into a three-necked flask to form a uniform water phase, stir, and heat to 30°C. After all dissolved, add 10gSt, 13gDVB, 0.2gBPO, 15.8g toluene, 12.4g n-heptane and 11.6g dichloroethane into the three-necked flask, adjust the required speed to 100rpm / min, and heat to Suspension polymerization was carried out under stirring at 85°C. After a reaction time of 9 hours, it was filtered, and the solid was the crude product of styrene-divinylbenzene copolymer; the solid was washed with deionized water and absolute ethanol in sequence, and then Extract the solid in a Soxhlet extractor for 12 hours with acetone that is 8 times the mass of the solid, then filter the solid, then wash the solid with methanol and deionized water in sequence, ...

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Abstract

The invention discloses a preparation method of a styrene-divinylbenzene copolymer hydrophobic catalyst support, which is characterized by comprising the following steps: adding deionized water, organic matter polyvinyl alcohol-1799, inorganic salt and sodium dodecyl benzene sulfonate into a reaction vessel, heating to 25-40 DEG C while stirring, adding a mixture of styrene, divinylbenzene, benzoperoxide, toluene, n-heptane and dichloroethane, heating to 70-90 DEG C, carrying out suspension polymerization reaction for 7-9 hours while stirring, and filtering; and washing the reaction solid with deionized water and anhydrous ethanol, extracting with acetone in a Soxhlet extractor for 12-48 hours, washing the solid with methanol and deionized water, drying, and screening to obtain the styrene-divinylbenzene copolymer hydrophobic catalyst support. The Pt / SDB hydrophobic catalyst prepared by using the product as the support has favorable use effect when being used for heavy water tritium extraction and wastewater detritiation.

Description

technical field [0001] The invention belongs to the preparation of organic macromolecular compounds, and relates to a preparation method of a styrene-divinylbenzene copolymer (SDB for short) hydrophobic catalyst carrier. The Pt / SDB hydrophobic catalyst prepared with the large particle diameter (φ2~5mm) styrene-divinylbenzene copolymer prepared by the present invention as a carrier can reduce the mass transfer resistance of the bed, prevent liquid flooding, and improve fluid exchange. Efficiency and other advantages, especially suitable for engineering applications such as tritium extraction from heavy water and tritium removal from wastewater. Background technique [0002] With the continuous maturity of nuclear technology and the rapid development of the nuclear industry, tritium, as a key nuclear material, is increasingly used. Therefore, the radiation protection and safety of tritium are becoming more and more important. Fusion reactors, fusion-fission hybrid reactors, a...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08F2/20C08J9/14
Inventor 刘才林缑可贞李秀春杨海君任先艳王玉平
Owner SOUTHWEAT UNIV OF SCI & TECH
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