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Vanadium-based catalyst, its preparation method and application

A technology of catalysts and main catalysts, which is applied in the field of vanadium-based catalysts and its preparation, and can solve problems such as harm to the human body, environmental pollution, and restrictions on the application of catalysts

Active Publication Date: 2017-06-06
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalyst VOCl commonly used in industry 3 by V 2 o 5 Produced by high-temperature chlorination, large-scale use of chlorine not only damages the health of operators, but also causes serious environmental pollution
On the other hand, VOCl 3 It is very sensitive to water, and a small amount of water can react with it to generate a large amount of hydrogen chloride gas and reddish-brown dust of vanadium pentoxide, which is extremely harmful to the human body and limits the application of this type of catalyst

Method used

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  • Vanadium-based catalyst, its preparation method and application
  • Vanadium-based catalyst, its preparation method and application
  • Vanadium-based catalyst, its preparation method and application

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preparation example Construction

[0048] The invention discloses a method for preparing the vanadium-based catalyst described in the above technical solution, comprising the following steps:

[0049] (A) mixing the compound of vanadium or the complex of vanadium and the electron donor in an organic solvent to obtain the main catalyst;

[0050] The compound of vanadium is V(acac) 3 、VO(OR) 3 、VO(acac) 3 、VO(OR) 2 Cl, VO(OR)Cl 2 , VCl 4 or VOCl 3 ;

[0051] The ligands of the vanadium complexes are fatty alcohols, amines, phosphates, β-diketones, octahydroxyquinoline or oximes;

[0052] (B) main catalyst and cocatalyst are mixed, obtain vanadium series catalyst;

[0053] The electron donor is a monocyclic aromatic hydrocarbon compound, an acrylate compound, a methacrylate compound, a compound of the formula (I), a compound of the formula (II) or a compound of the formula (III);

[0054]

[0055] Among them, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 independently selected from hydrogen, C1-C18 alkyl, ...

Embodiment 1

[0063] Taking benzene as an example, modifying VOCl 3 The method of the catalyst is as follows: In an ampoule bottle replaced with nitrogen, configure 10ml of hexane solution containing 1mmol of benzene, and extract 1mmol of VOCl 3 The solution was poured into the above-mentioned ampoule, and shaken evenly, ready for polymerization.

Embodiment 2

[0065] Weigh 0.4g of ether 2 (1,1-bis(methoxymethyl)-1,3-cyclopentadiene) in the glove box and put it into an ampoule bottle replaced with nitrogen, inject 1ml of toluene through a syringe, and then Then inject 10ml of hexane solution, seal the ampoule with a latex tube, and finally extract 1mmol of VOCl 3 The solution was poured into the above-mentioned ampule bottle, and the ampule bottle was placed in an ultrasonic oscillator in a 70°C water bath, kept for 30 minutes, and oscillated evenly for polymerization.

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Abstract

The invention provides a vanadium-based catalyst, including a main catalyst and a co-catalyst, the main catalyst is formed by complexing a vanadium compound and an electron donor, or is formed by complexing a vanadium complex and an electron donor; the vanadium The compound is V(acac)3, VO(OR)3, VO(acac)3, VO(OR)2Cl, VO(OR)Cl2, VCl4 or VOCl3; the ligands of the complexes of vanadium are fatty alcohols, Amines, phosphoric acid esters, β-diketones, octahydroxyquinoline or oximes; the electron donor is a monocyclic aromatic hydrocarbon compound, acrylate compound, methacrylate compound, formula (I) structure The compound of formula (II) structure or the compound of formula (III) structure. The stability of the vanadium-based catalyst to water, air and oxygen is enhanced. When used in the copolymerization of ethylene and propylene, the reaction activity is high, the obtained propylene content is slightly higher, and the structure is controllable.

Description

technical field [0001] The invention relates to the field of catalysts for synthesizing ethylene-propylene rubber, in particular to vanadium-based catalysts, their preparation methods and applications. Background technique [0002] Ethylene-propylene rubber is a copolymer rubber with ethylene and propylene as the basic monomers. Specifically, it can be divided into two yuan ethylene propylene rubber and three yuan ethylene propylene rubber. Compared with other rubber varieties, ethylene propylene rubber has the following advantages: 1. The main chain does not contain double bonds, is completely saturated, ozone resistance, aging resistance, chemical resistance and high temperature resistance; 2. Light specific gravity; 3. Excellent insulation performance ; Fourth, it is a rubber variety that can be highly oil-filled. Ethylene propylene rubber is one of the most promising types of rubber at present. Since its commercial production, its application fields have been continuou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/68C08F210/16
Inventor 那丽华张学全白晨曦张春雨于琦周毕吉福代全权张贺新
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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