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A boron-deficient boron nitride nanosheet and its preparation method and application

A boron nitride, nanosheet technology, applied in chemical instruments and methods, nitrogen compounds, refined hydrocarbon oil, etc., can solve the problem of performance not reaching industrial application potential, etc., and achieve low cost, high selectivity, and high adsorption activity. Effect

Active Publication Date: 2019-10-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the BN material exhibits a certain capacity for adsorption and desulfurization, its performance is still not up to the requirements of industrial application potential.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolve 0.01mol boric acid, 0.06mol dicyandiamide, and 0.001mol barbituric acid in 40ml of ultrapure water, stir at 80°C, and after the solvent water is completely evaporated, place the obtained white solid in a nitrogen atmosphere for 700 Calcined at ℃ for 5 hours, the obtained product is represented by BN-0.001.

Embodiment 2

[0022] Dissolve 0.01mol boric acid, 0.08mol dicyandiamide, and 0.005mol barbituric acid in 40ml of ultrapure water, stir at 80°C, and after the solvent water is completely evaporated, place the obtained white solid under a nitrogen atmosphere for 800 Calcined at ℃ for 5 hours, the obtained product is represented by BN-0.005.

Embodiment 3

[0024] Dissolve 0.01mol of boric acid, 0.1mol of dicyandiamide, and 0.01mol of barbituric acid in 40ml of ultrapure water, and stir at 90°C. After the solvent water is completely evaporated, place the obtained white solid in a nitrogen atmosphere for 900 Calcined at ℃ for 5 hours, the obtained product is represented by BN-0.01.

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PUM

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Abstract

The invention relates to non-metal adsorbents for adsorption desulfurization and in particular to a boron-defect boron nitride nano-sheet as well as a preparation method and application thereof to reduction of aromatic sulfide in fuel oil through adsorption. The preparation method comprises the following steps: dissolving boric acid and a nitrogen source into ultrapure water; then adding a co-reaction source and stirring the solution at 80 DEG C to 90 DEG C to realize evaporation; and (2) after completely evaporating the solution, putting an obtained solid into a tubular furnace and calcining the solid at 700 DEG C to 1000 DEG C for 5h under a nitrogen or ammonia atmosphere, so as to obtain the boron-defect boron nitride nano-sheet. One part of boron atoms are lacked so that the chemical rigidity of boron nitride is reduced; and a very good mutual effect can be formed between the boron-defect boron nitride nano-sheet and dibenzothiophene of soft base, so that the dibenzothiophene in the fuel oil can be removed.

Description

technical field [0001] The invention relates to a non-metallic adsorbent for adsorption and desulfurization, in particular to a boron-deficient boron nitride nanosheet, a preparation method thereof, and an application for adsorbing and reducing aromatic sulfides in fuel oil. Background technique [0002] With the development of world economy, the development of clean fuel is more and more urgent. Fossil fuels are still one of the main sources of energy in the world so far. However, the combustion of sulfur compounds ubiquitous in fuel releases SO x gas. These gases not only cause acid rain, but also cause harm to the human body. Therefore, it is becoming more and more important to realize efficient and clean fuels. Adsorption desulfurization (ADS) has received increasing attention due to mild operating conditions and high selectivity. [0003] Recently, layered hexagonal boron nitride (BN) has received extensive research interest. In our previous reports, BN materials ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/064B01J20/02B01J20/28B01J20/30C10G25/00
Inventor 熊君罗静杨磊朱文帅李华明
Owner JIANGSU UNIV