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A catalyst for producing divinylbenzene, its preparation method and use

A divinylbenzene and catalyst technology, which is applied in the field of catalysts for producing divinylbenzene, can solve the problems of low catalyst activity, low conversion rate of raw materials, and high reaction energy consumption, and achieves high catalyst activity, high ethylbenzene conversion rate, and high selectivity. good effect

Active Publication Date: 2018-09-28
JIANGSU ZHENGDAN CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this two-step process is becoming more and more perfect, due to the limitation of thermodynamic factors, there are still common problems such as harsh reaction conditions, high energy consumption, many by-products, and serious corrosion of equipment.
In addition, when the catalysts in the prior art are used to produce divinylbenzene, the reaction energy consumption is high, the catalyst activity is low, the conversion rate of raw materials is low, and the product selectivity is not high

Method used

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  • A catalyst for producing divinylbenzene, its preparation method and use

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Experimental program
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Effect test

Embodiment 1

[0023] A catalyst for the production of divinylbenzene, its composition is the following components in parts by weight:

[0024] 12 parts of single-layer graphene;

[0025] 25 parts of aluminum trichloride;

[0026] 60 parts ferric chloride;

[0027] 3 parts copper chloride.

[0028] The catalyst is a graphene-supported aluminum-iron-copper catalyst, and its preparation method is carried out as follows:

[0029] Weigh 12 parts by weight of single-layer graphene, 25 parts of aluminum trichloride, 60 parts of ferric chloride and 3 parts of copper chloride, mash, mix well, add deionized water, make the mixture humidified to kneadable, and then Carry out wet material kneading, extrude into spherical particles, the diameter of spherical particles is 7~10mm. Then aged at room temperature for 12 hours, dried at 120°C for 6 hours, and calcined at 500°C for 3 hours to obtain catalyst 1.

[0030] The graphene-supported aluminum-iron-copper catalyst prepared by the present invention...

Embodiment 2

[0034] A catalyst for the production of divinylbenzene, its composition is the following components in parts by weight:

[0035] 11 parts of bilayer graphene;

[0036] 25 parts aluminum silicate;

[0037] 62 parts iron acetate

[0038] 2 parts copper acetate.

[0039] The catalyst is a graphene-supported aluminum-iron-copper catalyst, and its preparation method is carried out as follows:

[0040] Weigh 11 parts by weight of double-layer graphene, 25 parts of aluminum silicate, 62 parts of iron acetate and 2 parts of copper acetate, mash, mix well, add deionized water to make the mixture humidified enough to be kneaded, and then carry out wet material Knead and extrude into spherical particles (ball diameter 7~10mm). Aged at room temperature for 10 hours, dried at 130°C for 4 hours, and calcined at 520°C for 2.5 hours to obtain catalyst 2.

[0041] The graphene-loaded aluminum-iron-copper catalyst prepared by the present invention can be used to produce divinylbenzene, the...

Embodiment 3

[0043] The catalyst for producing divinylbenzene, its composition is the following components in parts by weight:

[0044] 5 parts multilayer graphene;

[0045] 14 parts aluminum sulfate;

[0046] 80 parts iron sulfate;

[0047] 1 part copper sulfate.

[0048] The catalyst is a graphene-supported aluminum-iron-copper catalyst, and its preparation method is carried out as follows:

[0049] Weigh 5 parts by weight of multi-layer graphene, 14 parts of aluminum sulfate, 80 parts of iron sulfate and 1 part of copper sulfate, mash them, mix them evenly, add deionized water, make the mixture humidified enough to be kneaded, and then carry out wet material kneading , extruded into spherical particles (ball diameter 7 ~ 10mm). Aged at room temperature for 14 hours, dried at 100°C for 8 hours, and calcined at 480°C for 3.5 hours to obtain catalyst 3.

[0050] The graphene-loaded aluminum-iron-copper catalyst prepared by the present invention can be used to produce divinylbenzene, t...

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Abstract

The invention discloses a catalyst for producing divinylbenzene and a preparation method and a purpose thereof, and belongs to the field of organic processing and production. The catalyst comprises the following components in parts by weight: 5 to 12 parts of graphene, 14 to 25 parts of aluminum compound, 60 to 80 parts of ferric compound and 1 to 3 parts of copper compound. The preparation method comprises the following steps of weighing, crushing, and uniformly mixing; adding deionized water, and kneading; then, aging; finally, drying and roasting, so as to obtain the catalyst. The catalyst has the advantages that the catalyst can be applied to produce divinylbenzene through ethylbenzene and ethanol mixing catalytic reaction; the reaction energy consumption is low, the activity is high, the conversion rate of ethylbenzene is high, the selectivity of divinylbenzene is good, and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to a catalyst used in the field of organic chemical industry, in particular to a catalyst for producing divinylbenzene, a preparation method of the catalyst and an application of the catalyst. Background technique [0002] Divinylbenzene (DVB) is a colorless liquid with three isomers, ortho, meta, and para. Divinylbenzene contains two vinyl groups and is highly reactive. When copolymerized, it can form an insoluble polymer with a three-dimensional structure. It is a very useful crosslinking agent and resin modifier. Widely used in ion exchange resins, ion exchange membranes, impact-resistant resins, heat-resistant resins, unsaturated polyester resins, synthetic rubber, wood processing, flame retardants, etc. Among them, increasing the content of m- and p-position monomers is the key to improving the performance of the resin. The higher the content of meta- and para-monomers, the better the performance of the obtained resin, espe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745C07C15/44C07C2/88
CPCB01J23/002B01J23/745B01J2523/00C07C2/88B01J2523/17B01J2523/31B01J2523/842C07C15/44
Inventor 曹正国李江华王福张小平
Owner JIANGSU ZHENGDAN CHEM IND CO LTD