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Preparation method of nano ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier

A technology of triiron tetroxide and divinylbenzene, which is used in catalyst carriers, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of small catalyst particle size, poor catalytic stability, Problems such as poor hydrophobic stability, to achieve the effect of easy industrial production, mild reaction conditions and high degree of dispersion

Active Publication Date: 2020-12-22
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 type of current key research and application, but the preparation methods of the prior art mainly still exist: SDB (SDB is the abbreviation of styrene-divinylbenzene copolymer) hydrophobic catalyst carrier has poor hydrophobic stability and insufficient catalytic activity , The catalytic stability is poor, and the catalyst particle size is too small, the service life is short, the active components are easy to lose, and the compressive strength is low, which can not meet the engineering requirements. Physical doping modification is an effective way to improve. Therefore, it is very necessary to study the modification and doping of SDB hydrophobic catalyst support

Method used

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  • Preparation method of nano ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier
  • Preparation method of nano ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier
  • Preparation method of nano ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier

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Embodiment 1

[0049] A method for preparing a nanometer iron ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier, the steps are:

[0050] a, preparation of nano ferric oxide ion:

[0051] Add 100g of deionized water, 100g of absolute ethanol, and 40°C constant temperature water bath to preheat and stir in the reactor (three-necked flask), take 15g of ferric chloride and 10g of ferric chloride, add 50g of deionized water to dissolve each, and pour them in turn Put it into the reactor, quickly pour 8g of 25%wt ammonia water under the protection of nitrogen (that is, 25% of the mass percentage of ammonia water, the same below), adjust the rotation speed to 400rpm, react for 1.5h, add 2g of silane coupling agent, and heat to 60°C , reacted to 2h, centrifuged at 550rpm to precipitate, washed the precipitate with deionized water and absolute ethanol in sequence, and dried in vacuum at 70°C for 12h;

[0052] b. Preparation of nano ferric oxide doped styrene-divinylben...

Embodiment 2

[0055] A method for preparing a nanometer iron ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier, the steps are:

[0056] a, preparation of nano ferric oxide ion:

[0057] Add 100g of deionized water, 100g of absolute ethanol, and a constant temperature water bath at 50°C to preheat and stir in the reactor (three-necked flask), take 15g of ferric chloride and 10g of ferric chloride, add 50g of deionized water to dissolve each, and pour them in turn In the reactor, quickly pour 6g of 25%wt ammonia water under the protection of nitrogen, adjust the rotation speed to 450rpm, react for 1.5h, add 3g of silane coupling agent, heat to 60°C, react for 2h, centrifuge at 550rpm / min, and precipitate Wash with deionized water and absolute ethanol once, and vacuum dry at 70°C for 12 hours;

[0058] b. Preparation of nano ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst support:

[0059] Add 400g of deionized water, 5g of polyvinyl al...

Embodiment 3

[0061] A method for preparing a nanometer iron ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier, the steps are:

[0062] a, preparation of nano ferric oxide ion:

[0063] Add 150g of deionized water and 150g of absolute ethanol to the reactor (three-necked flask), preheat and stir with a 40°C constant temperature water bath, take 15g of ferric chloride and 10g of ferric chloride, add 50g of deionized water to dissolve each, and then Pour into the reactor, quickly pour 5g of 25%wt ammonia water under the protection of nitrogen, adjust the rotation speed at 500rpm / min, react for 1.5h, add 4g of silane coupling agent, heat to 60°C, react for 2h, centrifuge at 550rpm / min to precipitate , the precipitate was washed with deionized water and absolute ethanol in sequence, and dried in vacuum at 65°C for 24h;

[0064] b. Preparation of nano ferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier:

[0065] Add 400g of deionized ...

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Abstract

The invention discloses a preparation method of a nano ferroferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier. The preparation method is characterized by comprising thefollowing steps: treating Fe<3+>, Fe<2+> and a silane coupling agent through a co-precipitation method to prepare nano ferroferric oxide; adding de-ionized water, organic matters, inorganic salt and sodium dodecylbenzene sulfonate into a reaction container; after mixing the nano ferroferric oxide with styrene and divinylbenzene, adding a mixture; then adding benzoyl peroxide, toluene, n-heptane and dichloroethane and heating to 70 to 90 DEG C; stirring and carrying out suspension polymerization reaction; then filtering and washing and drying solids to prepare the nano ferroferric oxide doped styrene-divinylbenzene copolymer hydrophobic catalyst carrier. A Pt / nano-Fe3O4@SDB hydrophobic catalyst prepared by taking the product provided by the invention as the carrier is used for extracting tritium from heavy water and removing the tritium from wastewater; the catalytic efficiency of the catalyst can be increased and the catalyst is convenient to recycle; the catalyst has high compressionstrength and good utilization effect.

Description

technical field [0001] The invention belongs to the preparation of organic polymer compounds, and relates to a nanometer ferric oxide doped styrene-divinylbenzene copolymer (nano-Fe for short). 3 o 4 @SDB) Preparation method of hydrophobic catalyst support. The Pt / nano-Fe prepared by using the nano ferric oxide doped styrene-divinylbenzene copolymer prepared by the present invention as a carrier 3 o 4 @SDB hydrophobic catalyst has the advantages of high catalytic efficiency, long catalyst service life, reduced loss of active components, and good mass transfer performance. It is especially suitable for engineering applications in heavy water tritium extraction and wastewater tritium removal. 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. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F212/36C08F2/18C08F2/20C08F2/44C08K3/22C08J9/26B01J31/06B01J32/00B01J35/10
CPCB01J31/06B01J35/1019B01J35/1038B01J35/1042B01J35/1061C08F212/08C08F212/36C08J9/26C08J2201/042C08J2201/0424C08K3/22C08K2003/2275C08K2201/011C08F2/44C08F2/18C08F2/20Y02P20/584
Inventor 刘才林罗雯利陈文姣任先艳杨海君彭碧辉亓秀娟
Owner SOUTHWEAT UNIV OF SCI & TECH
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