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Method for preparing boron alkene

A boronene and boron source technology, applied in the direction of boron, boron/boride, etc., can solve the problems of large-scale preparation of boronene, harsh preparation conditions, high equipment prices, etc., to achieve high promotion value, low cost, and impurity little effect

Active Publication Date: 2017-08-18
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although Chinese and foreign scientists have successfully prepared single-layer boronene, due to the high price of equipment used, harsh preparation conditions, complex chemical processes, and high production costs, there is still a long way to go for large-scale preparation of boronene and its practical application. difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 2g of pentaborane, 6g of tungsten carbide powder, and 32g of cemented carbide balls with an analytical balance, put the raw materials and grinding balls into the ball mill jar in the glove box, and use a high-energy ball mill for 40 hours. The speed of the ball mill is 400r / min. The ball milling was stopped for 1 hour for 0.5 hours. After the ball milling was completed, the product was taken out; the product was immediately cooled with liquid nitrogen for 1 hour and then the product was distilled and separated for 2 hours to remove the remaining liquid borane; then the product was treated with a tubular vacuum furnace 2 After hours, remove the impurity carbon; then use ethanol (AR) as the extractant to perform solid-liquid extraction on the resulting product; finally, dry the product in a vacuum drying oven at 60°C for 10 hours, and naturally cool to room temperature to obtain a purity of 95% 的borene.

Embodiment 2

[0023] Weigh 2g of pentaborane, 8g of platinum powder, and 80g of cemented carbide balls with an analytical balance, put the raw materials and grinding balls into the ball mill jar in the glove box, and use a high-energy ball mill for 50 hours. The speed of the ball mill is 500r / min. After 1 hour stop for 0.5 hours, the product is taken out after the ball milling is finished; the product is immediately cooled with liquid nitrogen for 1.5 hours and then the product is distilled and separated for 3 hours to remove the remaining liquid borane; then the product is treated in a tubular vacuum furnace for 2 hours, Remove the impurity carbon; then use ethanol (AR) as the extractant to perform solid-liquid extraction on the resulting product; finally, dry the product in a vacuum drying oven at 70°C for 10 hours, and naturally cool to room temperature to obtain boron with a purity of 97% Ene.

Embodiment 3

[0025] Weigh 2g of pentaborane, 0.892g of carbon powder, 9.108g of tungsten powder, and 120g of cemented carbide balls with an analytical balance, put the raw materials and grinding balls into the ball mill jar in the glove box, and use a high-energy ball mill for 60 hours. The speed of the ball mill is 600r / min, every 1 hour of ball milling, stop for 0.5 hours, after ball milling, take out the product in the glove box; immediately cool the product with liquid nitrogen for 2 hours and then distill and separate the product for 4 hours to remove the remaining liquid borane; Treat the product in a tubular vacuum furnace for 2 hours to remove impurity carbon; then use acetone (AR) as the extractant to perform solid-liquid extraction on the resulting product; finally, dry the product in a vacuum drying oven at 80°C for 10 hours, naturally After cooling to room temperature, boronene with a purity of 98.5% was obtained.

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Abstract

The invention discloses a method for preparing boron alkene. The method includes steps of carrying out ball-milling on boron sources and catalysts according to a mass ratio of 1:3-5 under the condition of the ball-to-powder ratio of 4-10:1 for 40-60 hours and immediately cooling obtained products by the aid of liquid nitrogen for 1-2 hours; carrying out distillation separation on the products for 2-4 hours, removing remaining liquid-state borane, treating the products by the aid of a tube vacuum furnace for 2 hours and removing impurity carbon; carrying out solid-liquid extraction treatment on obtained products, drying the products by the aid of a vacuum drying tank and naturally cooling the products until the temperatures of the products reach the room temperature so as to obtain the boron alkene with the purity of 95%-98.5%. The method has the advantages that equipment is simple and is low in cost, the boron alkene obtained by the aid of the method is high in purity and product quality and contains few impurities, and accordingly the method has popularization value.

Description

Technical field [0001] The invention belongs to the technical field of new materials, and particularly relates to a preparation method of boronene. [0002] Background of the invention: [0003] Graphene, as a new type of nanomaterial with the thinnest, strongest, and strongest electrical and thermal conductivity, is a kind of single-layer carbon atom structure arranged in a honeycomb shape. It has excellent physical and chemical properties and has been widely used. Supercomputers, photon sensors, gene sequencing, solar cells and other fields, therefore, graphene is called "black gold" and is the "king of new materials." [0004] Following graphene, scientists hope to find more two-dimensional materials with excellent properties. The element boron has become the primary target because it is the "near neighbor" of carbon. However, the boronene, known as the "brother" of graphene, does not exist naturally and can only be synthesized artificially. Scientists have predicted the theore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B35/02
CPCC01B35/023C01P2006/80
Inventor 赵翠玲彭秋明刘先玉彭程
Owner YANSHAN UNIV
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