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Magnetic core-shell structure carbon material, preparation method thereof and application of magnetic core-shell structure carbon material in desulfurization

A core-shell structure, carbon material technology, applied in chemical instruments and methods, refined hydrocarbon oil, other chemical processes, etc., can solve problems such as limiting performance, inefficient adsorption of thiophene sulfides, hindering large-scale applications, etc. High desulfurization efficiency, best desulfurization efficiency, enhanced adsorption capacity and selectivity

Pending Publication Date: 2021-07-20
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite its good performance in removing thiol compounds, the inefficient adsorption of thiophene-based sulfides, high energy and hydrogen consumption, and accompanying octane loss under harsh experimental conditions hinder its scale-up. application, and limits the performance of the method

Method used

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  • Magnetic core-shell structure carbon material, preparation method thereof and application of magnetic core-shell structure carbon material in desulfurization
  • Magnetic core-shell structure carbon material, preparation method thereof and application of magnetic core-shell structure carbon material in desulfurization
  • Magnetic core-shell structure carbon material, preparation method thereof and application of magnetic core-shell structure carbon material in desulfurization

Examples

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Effect test

Embodiment 1

[0045] This implementation provides a method for preparing a magnetic core-shell structure carbon material, comprising the following steps:

[0046] Step 1: 0.5g of FeCl 3 ·6H 2 O and 1.0 g of urea were dissolved in 35 mL of ethylene glycol; then transferred to a 50 mL stainless steel autoclave (reaction pressure 0.06 MPa) and heated at 200 °C for 6 h; after cooling to room temperature, the resulting solid was collected with a magnet The product was washed sequentially with distilled water and ethanol to obtain the final Fe 3 o 4 The product was dried under vacuum for further use.

[0047] Step 2: Add 120mg of Fe 3 o 4The product was dispersed in 30mL, 0.6mol / L glucose solution, and put into a 50mL Teflon-lined stainless steel autoclave (reaction pressure 0.06MPa), and the reactor was placed in an oven preheated to 180°C for 6h; The solid product was collected, washed with distilled water and ethanol, and dried overnight at 120 °C.

[0048] Step 3: In the furnace tube, ...

Embodiment 2

[0054] This implementation provides a method for preparing a magnetic core-shell structure carbon material, comprising the following steps:

[0055] Step 1: 0.5g of FeCl 3 ·6H 2 O and 1.0 g of urea were dissolved in 35 mL of ethylene glycol; then transferred to a 50 mL stainless steel autoclave (reaction pressure 0.06 MPa) and heated at 200 °C for 9 h, after cooling to room temperature, the resulting solid was collected with a magnet The product was washed sequentially with distilled water and ethanol to obtain the final Fe 3 o 4 The product was dried under vacuum for further use.

[0056] Step 2: Add 120mg of Fe 3 o 4 The product was dispersed in 30mL, 0.6mol / L glucose solution, and filled into a 50mL Teflon-lined stainless steel autoclave (reaction pressure 0.06MPa), and the reactor was placed in an oven preheated to 180°C for 9h; The solid product was collected, washed with distilled water and ethanol, and dried overnight at 120 °C.

[0057] Step 3: In the furnace tu...

Embodiment 3

[0062] This implementation provides a method for preparing a magnetic core-shell structure carbon material, comprising the following steps:

[0063] Step 1: 0.5g of FeCl 3 ·6H 2 O and 1.0 g of urea were dissolved in 35 mL of ethylene glycol; then transferred to a 50 mL stainless steel autoclave (reaction pressure 0.06 MPa) and heated at 200 °C for 12 h; after cooling to room temperature, the resulting solid was collected with a magnet The product was washed sequentially with distilled water and ethanol to obtain the final Fe 3 o 4 The product was dried under vacuum for further use.

[0064] Step 2: Add 120mg of Fe 3 o 4 The product was dispersed in 30mL, 0.6mol / L glucose solution, and put into a 50mL Teflon-lined stainless steel autoclave (reaction pressure 0.06MPa). The solid product was collected, washed with distilled water and ethanol, and dried overnight at 120 °C.

[0065] Step 3: In the furnace tube, heat the solid product obtained in Step 2 to 450°C under a nitr...

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Abstract

The invention provides a magnetic core-shell structure carbon material as well as a preparation method and application thereof in desulfurization. The method comprises the following steps: preparing nitrogen-doped magnetic nanoparticles by adopting solvothermal, dispersing the nitrogen-doped magnetic nanoparticles in a carbon source solution for high-pressure heating reaction, roasting in a nitrogen atmosphere to obtain a magnetic core-shell structure carbon material, and further performing alkali active agent pore-forming on the material. The magnetic core-shell structure carbon material has a complete core-shell structure, a large specific surface area, an amorphous form and good stability, multiple metal active sites are exposed after activation at a high temperature, and the adsorption capacity and selectivity of an adsorbent to aromatic sulfides are significantly enhanced; and when being used as a desulfurization adsorbent for desulfurization, the adsorbent has the advantages of high adsorption rate, high desulfurization efficiency, good regeneration performance and easiness in recovery, especially has better desulfurization efficiency for thiophene sulfides in petroleum fuels, and has wide application prospects.

Description

technical field [0001] The invention belongs to the cross field of fuel processing and environmental protection in the petroleum industry, and specifically relates to a magnetic core-shell structure carbon material, a preparation method thereof and an application in desulfurization. Background technique [0002] Sulfur compounds naturally present in fuels are released into the air as toxic sulfur compounds during combustion, causing environmental pollution and human health problems. To reduce the sulfur content in fuels, various desulfurization methods have been developed. [0003] So far, the most widely used method in industry to treat sulfur content in fuels is hydrodesulfurization (HDS), in which sulfur pollutants are converted into hydrogen sulfide and corresponding hydrocarbons. Despite its good performance in removing thiol compounds, the inefficient adsorption of thiophene-based sulfides, high energy and hydrogen consumption, and accompanying octane loss under harsh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C10G25/00
CPCB01J20/20B01J20/28009B01J20/28021C10G25/003C10G2300/202
Inventor 王春霞潘宗卫
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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