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Rare earth catalyst composition and preparation method of rare earth catalyst

A rare earth catalyst and composition technology, applied in the rare earth field, can solve the problems of limited application, high viscosity of rare earth carboxylates and rare earth acid phosphorus/phosphonates, unfavorable preparation, storage and transportation, etc., and achieves easy storage and low production cost. , the effect of reducing costs

Inactive Publication Date: 2010-09-22
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rare earth carboxylates and rare earth acidic phosphorus / phosphonates have high viscosity, which is not conducive to preparation, storage, and transportation, which limits their application in industrial production

Method used

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  • Rare earth catalyst composition and preparation method of rare earth catalyst
  • Rare earth catalyst composition and preparation method of rare earth catalyst
  • Rare earth catalyst composition and preparation method of rare earth catalyst

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Experimental program
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preparation example Construction

[0039] The present invention also provides a preparation method of a rare earth catalyst, comprising:

[0040] reacting the phenolic compound and alkyllithium in an organic solvent to obtain a reaction solution, the phenolic compound being nonylphenol, octylphenol, decylphenol or isooctylphenol;

[0041] Add rare earth chloride to the reaction solution, and obtain rare earth phenoxide after reaction;

[0042] Mix rare earth phenoxide, alkylaluminum and chloride, heat up to 0°C-60°C to react to obtain a rare earth catalyst, the molar ratio of the rare earth phenate, alkylaluminum and chloride is 1:5-20:1- 3.

[0043] Rare earth phenoxides, alkylaluminum and chlorides are mixed and reacted to form active centers to have high catalytic activity. The catalytic activity of rare earth catalysts obtained is different with different mixing sequences. In the present invention, the rare earth phenate and alkylaluminum can be firstly mixed and reacted at 0°C to 60°C for 5min to 60min, ...

Embodiment 1

[0054] 1.32g (6.0×10 -3 mol) of nonylphenol was dissolved in 20mL of tetrahydrofuran, and 2.5mL of 2.5M butyllithium was added dropwise, and reacted for 2h; then 20mL containing 0.5g (2.0×10 -3 mol) suspension of neodymium trichloride in tetrahydrofuran, reacted for 4 hours; then vacuum-extracted tetrahydrofuran at 80°C to obtain a viscous solid neodymium nonylphenate; dissolved the viscous solid neodymium nonylphenate with hexane to obtain 2.0×10 -4 mol / mL nonylphenol neodymium hexane solution, the solution has better fluidity and less viscosity.

Embodiment 2

[0056] Under the protection of nitrogen, add 0.025mL of nonylphenol neodymium hexane solution prepared in Example 1, 5×10 -5 mol isoprene and 1×10 -4 mol of triethylaluminum, after reacting at 50°C for 5 minutes, add 1×10 -5 mol of diisobutylaluminum chloride, reacted for 30min at 25°C to obtain 5×10 -6 Rare earth catalyst for mol neodymium;

[0057] Under nitrogen protection, add 20mL containing 3mL (3.0×10 -2 mol) hexane solution of isoprene, then add the above-mentioned rare earth catalyst, at this moment, the mol ratio of isoprene and nonyl neodymium phenolate is 6000, carry out polymerization reaction at 50 ℃, after polymerization reaction 4 hours, use containing The ethanol solution of 0.01g / mL antiaging agent 264 terminated the reaction, and the polymer was coagulated with ethanol, and the yield was 41%.

[0058] The microstructure of the polymer was measured, wherein, the cis-1,4 structure content was 95.05%, and the 3,4 structure content was 4.95%, indicating that...

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Abstract

The invention provides a rare earth catalyst composition, which comprises rare earth phenolate, alkyl aluminum and chloride, wherein the rare earth phenolate is nonyl phenol rare earth, octylphenol rare earth, decyl-phenol rare earth or isooctyl-phenol rare earth; and the mol ratio of the rare earth phenolate to the alkyl aluminum to the chloride is 1:(5-20):(1-3). The invention also provides a preparation method of the rare earth catalyst, which comprises the following steps: reacting phenol compounds and the alkyl aluminum in organic solvent to obtain reaction solution, wherein the phenol compounds are nonyl phenols, octylphenols, decyl-phenols or isooctyl-phenols; adding rare earth chloride into the reaction solution for reacting to obtain the rare earth phenolate; and mixing the rare earth phenolate, the alkyl aluminum and the chloride and raising the temperature to 0-60 DEG C to obtain the rare earth catalyst, wherein the mol ratio of the rare earth phenolate to the alkyl aluminum to the chloride is 1:(5-20):(1-3). In the rare earth catalyst, the viscosity of the rare earth phenolate is lower so as to be convenient to transport and beneficial to scale application.

Description

technical field [0001] The invention relates to the field of rare earth technology, in particular to a rare earth catalyst composition and a preparation method of the rare earth catalyst. Background technique [0002] Rare earth catalysts are generally composed of rare earth components, cocatalysts and carriers. They have unique catalytic properties and are widely used in petroleum, chemical, environmental protection and other fields. [0003] Studies have shown that rare earth catalysts have high catalytic activity in diene polymerization, and can prepare polydienes with high cis content and high molecular weight, as summarized in "Anthology of Rare Earth Catalyzed Synthetic Rubber" (Science Press, 1980) A method for preparing polybutadiene and polyisoprene with high molecular weight and high cis-1,4 structure content by chlorinating rare earth, rare earth carboxylate, and rare earth phosphate, and investigated the preparation conditions of the above catalysts and the polym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/54C08F4/52C08F36/06C08F36/08
Inventor 张学全范长亮王佛松蔡洪光代全权毕吉福张春雨那丽华姜连升
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI