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Magnetic cation exchange resin catalyzer and preparation method and application thereof

A cation exchange and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., can solve the problems of resin magnetism disappearance, achieve high stability, maintain The effect of structural stability

Active Publication Date: 2010-06-16
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 materials as catalysts for chemical production. The main reason is that the sulfonation or acidification of the resin will affect the magnetic particles, which will eventually lead to the disappearance of the magnetism of the resin.

Method used

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  • Magnetic cation exchange resin catalyzer and preparation method and application thereof
  • Magnetic cation exchange resin catalyzer and preparation method and application thereof
  • Magnetic cation exchange resin catalyzer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] According to the method of titration hydrolysis (according to the method described in the doctoral thesis of Nanjing University of Science and Technology-"Preparation and Application Research of Nano Magnetic Particles and Magnetic Composite Particles"), 4gFe 3 o 4 , still in the reaction solution, keep the pH value at 11, while in a water bath at 50°C, add dropwise 0.7g of 10-undecylenic acid, and stir mechanically for 1.5h; add dropwise 0.4mol / L hydrochloric acid solution to adjust the pH value to 4.5, and the temperature was raised to 70°C, kept for 1.5h, and the reaction was terminated. After the reaction system is cooled, the product is magnetically separated, washed repeatedly with ethanol and distilled water, and dried at 40°C to the surface of 10-undecylenic acid-modified nano-Fe 3 o 4 .

Embodiment 2

[0048] 4g of Fe with an average particle size of 20nm 3 o 4 , put it into a 2L three-necked flask, add 900mL of distilled water, disperse by ultrasonic wave for 2h, put it in a water bath and raise the temperature to 50°C under mechanical stirring, add dropwise 0.4mol / L NaOH solution to adjust the pH value to 10, and then dropwise add 0.9g Oleic acid, kept for 1h; 0.4mol / L hydrochloric acid solution was added dropwise, the pH value was adjusted to 4, and the temperature was raised to 70°C, kept for 2h, and the reaction was terminated. After the reaction system is cooled, the product is magnetically separated, washed repeatedly with ethanol and distilled water, and dried at 40°C to the surface of oleic acid-modified nano-Fe 3 o 4 .

Embodiment 3

[0050] γ-Fe prepared by thermal decomposition 2 o 3 Nanoparticles (according to the method in Synthesis of HighlyCrystalline and Monodisperse Maghemite Nanocrystallites without aSize-Selection Process, J.Am.Chem.Soc.2001,123,12798), ground into powder, put into 2L three-necked flask, add 1000mL distilled water , ultrasonically disperse for 3 hours, put it in a water bath and heat it up to 50°C under mechanical stirring, add dropwise 0.4mol / L NaOH solution to adjust the pH value to 10, then add dropwise 0.8g dodecanoic acid to the solution, keep for 2h; dropwise add 0.4mol / L hydrochloric acid solution, adjust the pH value to 4.5, and raise the temperature to 70°C, keep it for 1.5h, and the reaction is terminated. After the reaction system is cooled, the product is magnetically separated, washed repeatedly with ethanol and distilled water, and dried at 40°C to the surface of dodecanoic acid-modified nano-γ-Fe 2 o 3 .

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Abstract

The invention relates to a magnetic cation exchange resin catalyzer and a preparation method and application thereof. In the method, nanometer magnetic metal oxide and long-chain fatty acid are mixed in the water the pH of which is 9-12, the pH is regulated to 4-5, and modified nanometer magnetic particulate is obtained after the nanometer magnetic metal oxide and the long-chain fatty acid react; monomer, evocating agents, crosslinking agents and pore-foaming agents are mixed with the modified nanometer magnetic particulate which accounts for 5-65% of the total weight of the monomer and the crosslinking agents, magnetic resin is obtained after polymerization, and the catalyzer is obtained through sulphur reaction of the magnetic resin. The catalyzer can be used for catalyzing olefin hydration reaction, ether hydrolysis reaction, esterification reaction, etherealization reaction, condensation reaction or aromatic hydrocarbon alkylation reaction in a magnetic reactor.

Description

technical field [0001] The invention relates to a magnetic cation exchange resin catalyst and its preparation method and application. More specifically, the present invention relates to a superparamagnetic macroporous strongly acidic cation exchange resin catalyst and its preparation method and application. Background technique [0002] As a new type of bed, magnetically stabilized bed has the advantages of both fixed bed and fluidized bed. Compared with fluidized bed, external magnetic field can effectively control interphase back-mixing and particle loss; The bed can use small particles of catalyst without causing excessive pressure drop, and the uniform porosity can prevent the bed from channeling and local hot spots. The premise of applying the magnetically stabilized bed process is that the catalyst must have magnetic response characteristics. [0003] Strongly acidic cation exchange resins can be used as solid acid catalysts to replace homogeneous acid catalysts such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/10B01J31/26
Inventor 谢文华程萌宗保宁刘强
Owner CHINA PETROLEUM & CHEM CORP
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