TiO2@NH2-MIL-125(Ti) nanofiber with ultra-deep desulfurization property

A nanofiber and performance technology, applied in the field of preparation of ultra-deep desulfurization composite nanomaterials, can solve the problems of low catalytic activity and small specific surface area of ​​catalysts, and achieve the effects of simple operation, improved catalytic effect, and controllable material morphology

Inactive Publication Date: 2019-07-23
SHENYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] It has a significant catalytic effect in the extraction catalytic oxidation desulfurization system, solving the problem of TiO 2 The problem of small specific surface area and low catalytic activity of the catalyst

Method used

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  • TiO2@NH2-MIL-125(Ti) nanofiber with ultra-deep desulfurization property
  • TiO2@NH2-MIL-125(Ti) nanofiber with ultra-deep desulfurization property
  • TiO2@NH2-MIL-125(Ti) nanofiber with ultra-deep desulfurization property

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Experimental program
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Embodiment 1

[0023] 0.05g, 0.1g, 0.2g of TiO obtained by electrospinning technology 2 Nanofibers were placed in a mixture of 4.5mL DMF and 0.5mL methanol, ultrasonicated for 30min, stirred for 2h, then added 0.68g 2-amino-terephthalic acid, stirred for 1h, then added 0.9mL butyl titanate, stirred for 1h, Packaged in a high-pressure reactor, roasted at 150°C for 48 hours to obtain TiO 2 and NH 2 -MIL-125(Ti) with different proportions of TiO 2 @NH 2 - MIL-125(Ti) nanofibers.

[0024] The resulting TiO 2 @NH 2 -MIL-125(Ti) nanofibers exhibit anatase and rutile phases of titanium dioxide and NH 2 -MIL-125(Ti) crystal phase, see XRD spectrum ( figure 1 ) and IR spectrum ( figure 2 ). TiO 2 @NH2-MIL-125(Ti) nanofibers appear fibrous, see image 3 .

Embodiment 2

[0026] Prepare 5 mL of n-octane solution with a sulfur content of 500 ppm dibenzothiophene, add it to a round bottom flask, keep the temperature in a water bath at 60°C for 15 minutes, then add 1 mL of 1-butyl-3-methylimidazolium hexafluorophosphate As an extractant, 31 μL of H 2 o 2 As an oxidizing agent, 0.02g 0.1g TiO 2 @NH 2 -MIL-125(Ti) nanofiber catalyst, take out the supernatant oil sample after a certain time interval of reaction, and analyze it with a high-performance liquid chromatography analyzer. The result shows that after 40 minutes of reaction, 0.02g0.1g TiO 2 @NH 2 - The catalytic desulfurization efficiency of MIL-125 (Ti) nanofibers as a catalyst is 100%, see Figure 4 shown.

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Abstract

The invention relates to a TiO2@NH2-MIL-125(Ti) nanofiber with an ultra-deep desulfurization property and a preparation method thereof and belongs to the technical field of preparation of functional nanometer materials. The preparation method comprises the following steps: taking a titanium dioxide nanofiber prepared through an electrospinning technique as a baseplate material; adopting a solvothermal method for compounding the TiO2@NH2-MIL-125(Ti) nanofiber. The catalyst is capable of removing stubborn sulfur compound in oils; the diameter of the TiO2@NH2-MIL-125(Ti) nanofiber is about 218nm;the TiO2@NH2-MIL-125(Ti) nanofiber catalyst used at 60 DEG C is capable of completely removing 500ppm DBT from simulated oil within 40min. The preparation method provided by the invention is simple,is low in energy consumption of equipment, is suitable for volume production, is capable of solving the problem of difficulty in separating polyacids and is expected to use in industry for desulfurization of sulfur-containing fuels.

Description

technical field [0001] The invention belongs to the technical field of preparation of ultra-deep desulfurization composite nanomaterials, and relates to TiO with ultra-deep desulfurization performance 2 @NH 2 - MIL-125(Ti) nanofibers. Background technique [0002] With the advancement of science and technology, people's demand for motor vehicles is increasing day by day. Therefore, the amount and quality of vehicle fuel has become the focus of attention. The National VIA standard implemented in 2019 requires that the content of sulfur compounds in fuel oil should still not exceed 10ppm, which has inspired scientists to explore effective catalysts to reduce the content of sulfur compounds in fuel. [0003] Among many desulfurization methods, extractive catalytic oxidation desulfurization technology is a simple and cheap one-step desulfurization technology, and seeking high-efficiency catalysts in this technology is a hot issue in current research. TiO 2 It has the advanta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J35/02B01J35/06B01J35/10C10G27/10C10G27/12
CPCB01J31/38B01J35/023B01J35/06B01J35/1004C10G27/10C10G27/12C10G2300/202
Inventor 马雯雯赵震张宏宋剑斌孔莲张红丹魏娜马原雅
Owner SHENYANG NORMAL UNIV
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