Magnesium fluoride catalyst and its preparation method and use

A catalyst, magnesium fluoride technology, applied in physical/chemical process catalysts, dehydrohalogenation preparation, chemical instruments and methods, etc., can solve problems such as the application mode and effect of magnesium fluoride catalyst are not given, and achieve safety High, stable, suitable pore size and pore volume effect

Active Publication Date: 2017-05-17
陕西中化蓝天化工新材料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent only discloses the preparation method of the magnesium fluoride catalyst and its specific surface area, and does not give the application and implementation methods of the magnesium fluoride catalyst in dehydrohalogenation reaction, fluorine-chlorine exchange reaction, disproportionation reaction or hydrofluorination reaction. Effect

Method used

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  • Magnesium fluoride catalyst and its preparation method and use
  • Magnesium fluoride catalyst and its preparation method and use
  • Magnesium fluoride catalyst and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Dissolve 82.68g of magnesium ethylate in 570ml of isopropanol, stir to make it evenly mixed, and form a magnesium-alcohol solution. At room temperature, dissolve 31.79g of anhydrous HF in HF-Et 2 O (ether) solution was added to the magnesium-alcohol solution, stirred vigorously, and stopped stirring after 20 hours of reaction. Use a vacuum rotary evaporator to remove the volatile components in the product, put it in a vacuum oven to dry, and then obtain the catalyst precursor, which is denoted as MgF 2 -1.

Embodiment 2

[0040] Dissolve 82.68g of magnesium isopropoxide in 600ml of toluene, stir to make it evenly mixed, and form a magnesium-benzene solution. At room temperature, dissolve 25.53g of anhydrous HF in HF-Et 2 O solution was added to the magnesium-benzene solution, stirred vigorously, and stopped stirring after 20 hours of reaction. Use a vacuum rotary evaporator to remove the volatile components in the product, and then dry it in a vacuum oven to obtain the catalyst precursor, which is denoted as MgF 2 -2.

Embodiment 3

[0042] Dissolve 82.68g of magnesium acetate in 600ml of methanol, stir to make it evenly mixed, and form a magnesium-alcohol solution. At room temperature, dissolve 25.55 g of anhydrous HF in HF-CH 3 Add OH (methanol) solution into the magnesium alcohol solution, stir vigorously, and stop stirring after 20 hours of reaction. Use a vacuum rotary evaporator to remove the volatile components in the product, and then dry it in a vacuum oven to obtain the catalyst precursor, which is denoted as MgF 2 -3.

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Abstract

The invention discloses a magnesium fluoride catalyst. The magnesium fluoride catalyst has carbon content of less than 10% and a specific surface area of more than 130 m<2> / g. The magnesium fluoride catalyst provided by the invention has high catalytic activity and strong stability in the dehydrohalogenation reaction, fluorine-chlorine exchange reaction, disproportionation reaction or hydrofluorination reaction.

Description

technical field [0001] The invention relates to a metal fluoride catalyst for catalytic reaction, in particular to a magnesium fluoride catalyst with a high specific surface area. Background technique [0002] Magnesium fluoride has a special structure and excellent performance, strong corrosion resistance, stable structure, and can be used in catalytic reactions under harsh conditions. When used in a catalytic reaction, the prior art believes that the specific surface area of ​​the magnesium fluoride catalyst has a greater impact on the reaction. The specific surface area of ​​magnesium fluoride prepared by conventional methods is generally lower than 44m 2 / g, in order to provide the specific surface area of ​​magnesium fluoride, the prior art has made the following efforts: [0003] Chinese patent CN104071814A discloses a kind of preparation method of high specific surface area magnesium fluoride, magnesium source aqueous solution (such as magnesium acetate Mg(CH 3 COO...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/12C07C17/25C07C21/18C07C17/20C07C19/08C07C17/37
Inventor 王菲菲杨洋刘坤峰杨会娥齐芳田保华曾昌华宁颖涛
Owner 陕西中化蓝天化工新材料有限公司
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