Graphdiyne-based composite material catalyst and preparation method and application thereof

A technology of composite materials and graphyne, which is applied in the field of graphyne-based composite catalysts and its preparation and application, can solve the problems of low mass transfer and low dispersion of gas metals, achieve high catalytic activity, promote enrichment, and eliminate induction period effect

Active Publication Date: 2020-02-04
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 graphyne-based composite catalyst and its preparation method and application. The pres

Method used

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  • Graphdiyne-based composite material catalyst and preparation method and application thereof
  • Graphdiyne-based composite material catalyst and preparation method and application thereof
  • Graphdiyne-based composite material catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0085] Example 1

[0086] Preparation of catalyst:

[0087] 1) Select 10g of graphyne powder, select 0.1g of melamine and dissolve in 5mL of toluene, spray the resulting impregnating solution on the surface of the aforementioned carrier, and place it in a quartz boat in a tube furnace at 800°C in a nitrogen atmosphere Roasted for 2h, the obtained solid sample is ready for use.

[0088] 2) Dissolve 0.08g of triphenylmethylphosphine bistrifluoromethanesulfonimide salt and 0.02g of triphenylethylphosphonium bromide in 10mL of toluene, stir well, add the solid sample obtained in step 1) , Soak for 2h, and dry at 180℃ for later use. The mass loading of the ionic liquid is 1%.

[0089] 3) Dissolve 4.23 g of copper chloride in 2.12 mL of toluene, stir well, add the sample obtained in step 2), immerse in an external 0.2kV static electric field for 2 hours, and dry at 180°C for use. The mass loading of copper is 20%.

[0090] 4) 14.43 g of the solid sample obtained above is re-dispersed in a...

Example Embodiment

[0093] Example 2

[0094] Preparation of catalyst:

[0095] 1) Select 10 g of graphyne film, select 2.0 g of boric acid to dissolve in 100 mL of nitrogen methyl pyrrolidone, spray the resulting impregnating liquid on the surface of the aforementioned carrier, and place it in a quartz boat in a tube furnace at 200 ℃ It is calcined in an argon atmosphere for 10 hours, and the obtained solid sample is ready for use.

[0096] 2) Take 0.6g 1-propyl-2,3-dimethylimidazole bistrifluoromethanesulfonimide salt and 1.4g 1-hexyl-2,3-dimethylimidazole bistrifluoromethanesulfonimide The salt ionic liquid was dissolved in 10 mL of nitrogen methyl pyrrolidone, and after stirring uniformly, the solid sample obtained in step 1) was added, immersed for 10 hours, and dried at 180° C. for use. The mass loading of the ionic liquid is 20%.

[0097] 3) Dissolve 0.2 g of rhodium chloride in 1.6 mL of nitrogen methyl pyrrolidone, stir well and add the sample obtained in step 2), immerse in an external 4kV st...

Example Embodiment

[0101] Example 3

[0102] Preparation of catalyst:

[0103] 1) Select 10g of graphyne on the copper substrate, select 1.5g of triphenylphosphine and dissolve in 50mL of nitroz, dimethylformamide, spray the resulting impregnation solution on the surface of the aforementioned carrier, and place it into the quartz in the tube furnace Inside the boat, calcined in a helium atmosphere at 500°C for 6 hours, and the obtained solid sample was used for later use.

[0104] 2) Dissolve 0.3g of 1-butyl-3-methylimidazole hexafluorophosphate and 0.7g of azamethylpyrrolidone hydrochloride in 50mL of azodicarbonamide, stir well, and add to step 1) The obtained solid sample was immersed for 5 hours and dried at 180°C for use. The mass loading of the ionic liquid is 10%.

[0105] 3) Dissolve 0.103g of ruthenium chloride in 0.5mL of azodicarbonamide, stir well and add to the sample obtained in step 2), immerse it in an external 2.0kV static electric field for 4h, and at 180℃ Dry for later use. The ma...

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Abstract

The invention provides a graphdiyne-based composite material catalyst and a preparation method and application thereof. The dispersing effect of metal in the graphdiyne-based composite material catalyst is better, the catalytic activity is higher, the stability is better, and the metal is stabilized on the outer surface layer of the catalyst through the form of coordination with ionic liquid, so that the influence of mass transfer is reduced, and the dispersity of the metal is improved meanwhile. According to the graphdiyne-based composite material catalyst and the preparation method and application thereof, an external static electric field is introduced into the preparation of the ionic-liquid-loaded metal-based catalyst for the first time, the enrichment of metal active centers on the surface layer of the ionic liquid is promoted, since the metal active centers of the catalyst are distributed on the surface layer of the ionic liquid, the influence of substrate diffusion is reduced,and under the evaluated reaction condition, the induction period of the catalyst disappears.

Description

[0001] (1) Technical field [0002] The invention relates to a graphyne-based composite material catalyst, a preparation method and application thereof. [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 the calcium carbide acetyl...

Claims

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Application Information

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IPC IPC(8): B01J31/02B01J31/22B01J31/24B01J37/34C07C17/08C07C21/06
CPCB01J31/0292B01J31/1815B01J31/183B01J31/24B01J37/342B01J2231/32B01J2531/16B01J2531/18B01J2531/821B01J2531/822C07C17/08C07C21/06
Inventor 赵佳李小年丰枫姚楠王柏林陆金跃王赛赛邵淑娟方正
Owner ZHEJIANG UNIV OF TECH
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