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A kind of Al-Mg-B powder/graphyne mixed carrier supported metal catalyst and its preparation and application

A mixed carrier and metal-loaded technology, which is applied in the direction of catalyst activation/preparation, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., can solve the problem of low gas metal dispersion and low mass transfer. problems, to achieve good stability, high catalytic activity, good dispersion effect

Active Publication Date: 2020-10-09
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a metal catalyst supported by aluminum-magnesium-boron powder / graphyne mixed carrier and its preparation and application. The present invention fundamentally solves the shortcomings of low gas metal dispersion and low mass transfer in the supported ionic liquid catalyst system

Method used

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  • A kind of Al-Mg-B powder/graphyne mixed carrier supported metal catalyst and its preparation and application
  • A kind of Al-Mg-B powder/graphyne mixed carrier supported metal catalyst and its preparation and application
  • A kind of Al-Mg-B powder/graphyne mixed carrier supported metal catalyst and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Catalyst preparation:

[0082] 1) Select 9.1 g of graphdiyne film carrier and 0.91 g of aluminum-magnesium-boron powder and mix them mechanically for 3 hours, then bake them in a nitrogen atmosphere at 200°C for 2 hours, and obtain a solid sample for later use.

[0083] 2) Dissolve 0.08g of triphenylmethylphosphine bistrifluoromethanesulfonimide salt and 0.02g of triphenylethylphosphine bromide in 5mL of toluene, stir well, then add the solid sample obtained in step 1) , impregnated for 2 hours, and dried at 180°C for later use. Wherein the mass loading of ionic liquid is 1%.

[0084] 3) Dissolve 0.009g of chloroauric acid in 0.05mL of toluene, stir evenly, add the sample obtained in step 2), dip in an external 0.2kV static electric field for 2h, and dry at 180°C for use. Wherein the mass loading amount of gold element is 0.05%.

[0085] 4) 10.109 g of the solid sample obtained above was re-dispersed in a mixed solution of 50 mL of toluene and 1.0 g of dimethyldichlo...

Embodiment 2

[0089] Catalyst preparation:

[0090] 1) 2 g of graphyne powder and 8 g of aluminum-magnesium-boron powder were selected and mixed mechanically for 2 h, and then calcined for 3 h in an argon atmosphere at 300° C., and the obtained solid sample was used for later use.

[0091] 2) Dissolve 0.25g triphenylmethylphosphine bistrifluoromethanesulfonimide salt and 0.25g N-pentyl-ethylpiperidinium chloride salt ionic liquid in 5mL nitrogen nitrogen dimethylformamide, stir well , adding the solid sample obtained in step 1), soaking for 3 hours, and drying at 180°C for later use. Wherein the mass loading of ionic liquid is 5%.

[0092] 3) Dissolve 0.103g of ruthenium chloride in 0.5mL of nitrogen-nitrogen dimethylformamide, stir evenly, add the sample obtained in step 2), and immerse in an external 3kV static electric field for 2h. After 5 hours, dry it at 180°C for later use. Wherein the mass loading amount of ruthenium element is 0.5%.

[0093] 4) 12.5 g of the solid sample obtain...

Embodiment 3

[0097] Catalyst preparation:

[0098] 1) 8 g of graphyne powder and 2 g of aluminum-magnesium-boron powder were selected and mixed mechanically for 4 hours, and then roasted for 8 hours in a nitrogen atmosphere at 400° C., and the obtained solid sample was used for later use.

[0099] 2) Take 0.4g of 1-propyl-2,3-dimethylimidazole bis-trifluoromethanesulfonimide salt and 0.4g of 1-hexyl-2,3-dimethylimidazole bis-trifluoromethanesulfonimide salt ion The liquid was dissolved in 8 mL of toluene, and after stirring evenly, the solid sample obtained in step 1) was added, soaked for 4 hours, and dried at 180°C for later use. Wherein the mass loading of ionic liquid is 8%.

[0100] 3) Dissolve 4.53g of copper phthalocyanine in 9.1mL of toluene, stir evenly, add the sample obtained in step 2), dip in an external 3kV static electric field for 3h, and dry at 180°C for later use. Wherein the mass loading of copper element is 5%.

[0101] 4) 14.81 g of the solid sample obtained above w...

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Abstract

The invention provides an aluminum magnesium boron powder / graphite alkyne mixed carrier catalyst loaded with metal and a preparation method and application thereof. According to the aluminum magnesiumboron powder / graphite alkyne mixed carrier catalyst loaded with the metal, the metal in the mixed carrier composed of a graphite alkyne carrier and the aluminum magnesium boron powder is better in dispersion effect, higher in catalytic activity and better in stability, the metal is stabilized on the outer surface layer of the catalyst through a form of coordination with the ionic liquid, the influence of mass transfer is reduced, meanwhile the dispersion of the metal is improved, an external static electric field is introduced into the preparation of the metal based catalyst loaded with the ionic liquid for the first time, the enrichment of a metal active center on the surface layer of the ionic liquid is promoted, because the catalyst metal active center is distributed on the surface layer of the ionic liquid, the influence of substrate diffusion is reduced, and under the evaluated reaction conditions, the induction period of the catalyst is eliminated; and the disadvantages of low gas metal dispersion and low mass transfer in the catalyst system loaded with the ionic liquid is fundamentally solved.

Description

[0001] (1) Technical field [0002] The invention relates to an aluminum-magnesium-boron powder / graphyne mixed carrier-loaded metal catalyst and its preparation and application. [0003] (2) Background technology [0004] Vinyl chloride is the monomer of polyvinyl chloride (PVC), one of the five largest synthetic resins in the world, and is mainly produced by the calcium carbide acetylene method and the petroleum ethylene method. China's coal-rich, oil-poor, and gas-poor energy reserves determine that the calcium carbide acetylene method will continue to be the main process for the production of vinyl chloride in my country for a long time to come, that is, mercuric chloride catalyzes the reaction of acetylene and hydrogen chloride to produce vinyl chloride. However, the highly toxic mercuric chloride catalyst seriously pollutes the environment and endangers human health. Therefore, the development of non-mercury catalysts is very necessary for the sustainable development of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/02B01J37/34B01J31/24B01J31/22C07C17/08C07C21/06
CPCB01J31/0292B01J31/1815B01J31/183B01J31/2404B01J37/342B01J2231/32B01J2531/16B01J2531/18B01J2531/821B01J2531/822C07C17/08C07C21/06
Inventor 赵佳王柏林岳玉学李小年王赛赛
Owner ZHEJIANG UNIV OF TECH
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