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Composite magnetic cationic ion-exchange resin, and preparation and use thereof

A technology of cation exchange and composite magnetism, which is applied in the field of composite magnetic cation exchange resin and its preparation and application, and can solve the problems of magnetic disappearance and so on

Active Publication Date: 2009-05-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no report on the use of magnetic resin as a catalyst for chemical production. This is mainly due to the harsh reaction conditions that often affect the magnetic particles during the further processing of the resin, such as sulfonation or acidification. resulting in loss of magnetism

Method used

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  • Composite magnetic cationic ion-exchange resin, and preparation and use thereof
  • Composite magnetic cationic ion-exchange resin, and preparation and use thereof
  • Composite magnetic cationic ion-exchange resin, and preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Mix and dissolve 26.5ml of styrene and 0.24g of benzoyl peroxide, put it in a 75°C water bath, stir for 15-25min, and pour the solution into a three-necked flask when the solution has a certain viscosity. Add 8g of iron powder and 0.1g of tetrabutoxytitanium into the three-necked flask, and stir mechanically until completely uniform. Add 80ml of 1wt% gelatin aqueous solution, raise the temperature to 80°C with stirring, and keep for 2h; raise the temperature to 85°C, keep for 2h; then raise the temperature to 90°C, keep for 6h, and the reaction is terminated. The reaction system was cooled and discharged, washed repeatedly with distilled water, and dried naturally to obtain magnetic cores.

Embodiment 2

[0045] Mix and dissolve 17.5ml of styrene, 9.7ml of divinylbenzene, and 0.21g of benzoyl peroxide, put in a water bath at 80°C, stir for 15-25min, and pour the solution into a three-necked flask when the solution has a certain viscosity. Add 8g of iron powder and 0.1g of tetrabutoxytitanium into the three-necked flask, and stir mechanically until completely uniform. Add 80ml of 2.5wt% polyvinyl alcohol aqueous solution, raise the temperature to 82°C with stirring, and keep for 2h; raise the temperature to 86°C, keep for 2h; then raise the temperature to 90°C, keep for 5h, and the reaction is terminated. The reaction system was cooled and discharged, washed repeatedly with distilled water, and dried naturally to obtain magnetic cores.

Embodiment 3

[0047] Mix and dissolve 17.5ml of styrene, 9.7ml of divinylbenzene, and 0.25g of azobisisobutyronitrile, put in a 74°C water bath, stir for 15-25min, and pour the solution into a three-necked flask when the solution has a certain viscosity. Add 8g of iron powder and 0.1g of tetrabutoxytitanium into the three-necked flask, and stir mechanically until completely uniform. Add 70ml of 1wt% gelatin aqueous solution, raise the temperature to 80°C with stirring, and keep it for 2h; raise the temperature to 86°C, keep it for 1.5h; then raise the temperature to 91°C, keep it for 6h, and the reaction is terminated. The reaction system was cooled and discharged, washed repeatedly with distilled water, and dried naturally to obtain magnetic cores.

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Abstract

The invention relates to a composite magnetic cation exchange resin, as well as a preparation method and application thereof. The resin consists of macroporous cation exchange resin at an outer layer and one or a plurality of magnetic cores embedded inside, wherein the weight ratio of the macroporous cation exchange resin to the magnetic cores is 0.4-10:1; each magnetic core consists of gel-type resin and one or a plurality of magnetic particles embedded inside the gel-type resin; and the weight ratio of the gel-type resin to the magnetic particles is 1.2-100:1. The preparation method comprises the steps of coating the magnetic particles with the gel-type resin so as to prepare the magnetic cores, coating the outer layers of the magnetic cores with the macroporous resin, performing sulfonation or hydrolysis and obtaining the composite magnetic cation exchange resin. The composite magnetic cation exchange resin provided by the invention can be used in metal enrichment, wastewater treatment, biochemical, medical, pharmaceutical and other fields, and particularly the composite magnetic strong-acidic resin provided by the invention can be used for catalytic polymerization, etherification, hydration and other chemical reaction in magnetically stabilized beds, magnetically fluidized beds, magnetic suspension beds and other reactors.

Description

technical field [0001] The invention relates to an ion exchange resin and its preparation method and application. More specifically, the present invention relates to a composite magnetic cation exchange resin and its preparation method and application. Background technique [0002] Since the invention of phenolic ion exchange resins in the 1930s, after more than 70 years of development, the types of ion exchange resins have continued to increase, their performance has been continuously improved, and their application fields have also been greatly expanded. During the development of ion exchange resins, magnetic resins have gradually attracted people's attention in order to solve the problems of powdery resins in the process of sedimentation, separation and regeneration. [0003] Since the first synthesis of magnetic powder resins in the 1970s, my country and many other countries have carried out corresponding research on magnetic resins. The research scope involves various ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/20C08L25/06C08L33/08C08K3/22B01J39/20
Inventor 谢文华程萌宗保宁刘强
Owner CHINA PETROLEUM & CHEM CORP
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