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Mesoporous silicon material as well as preparation method and application thereof

A technology of mesoporous silicon and mesoporous structure, applied in the field of mesoporous materials, to achieve the effects of high catalytic activity, high dispersion, easy recovery and recycling

Active Publication Date: 2013-12-25
泰州市海创新能源研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In 2004, Cooper et al. reported the synthesis of mesoporous materials such as aluminum phosphate with haloimidazolium salt or quaternary ammonium salt ionic liquid as template agent. In recent years, simple halo-based ionic liquid [C n mim]X(X=Cl, Br) as a template to synthesize mesoporous materials has become a research hotspot, mainly including the synthesis of MCM series, SBA-15, SiO 2 、TiO 2 and Al 2 o 3 However, the research focus is mainly on the synthesis and characterization of mesoporous materials. There are relatively few reports on the application of ionic liquids as templates to synthesize mesoporous materials. The anions and cations of metal-based ionic liquids can be modulated to Metal-based ionic liquids are used as templates to synthesize functional mesoporous materials, which can evenly disperse metal active sources on mesoporous materials. This mesoporous material has good catalytic activity in catalytic oxidation reactions

Method used

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  • Mesoporous silicon material as well as preparation method and application thereof
  • Mesoporous silicon material as well as preparation method and application thereof
  • Mesoporous silicon material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method for synthesizing functionalized ordered mesoporous silicon material using polyacid type ionic liquid as raw material, comprising the following steps:

[0033] 1) Weigh the polyacid ionic liquid [C 16 mim] 3 PW 12 O 40 0.1420 g was dissolved in 4 mL of acetonitrile, stirred for 30 min to dissolve; the above solution was added to 26.2 mL of deionized water, and then 2 mL of tetraethyl orthosilicate (TEOS) and 0.52 mL of ammonia water were added to it, and copolycondensation was carried out for 3 h.

[0034] 2) Filter and wash the product obtained in the above process; dry at 120°C for 3 hours, and grind into powder; heat the powder to 550°C at a rate of 5°C / min in a programmed temperature tube furnace, and keep it for 6 hours to obtain a functionalized product. Ordered mesoporous silicon material.

example 1

[0036] Small-angle XRD pattern of the functionalized ordered mesoporous silicon material obtained in Example 1 ( figure 1 ) and TEM images ( figure 2 ) and from the BET data, it can be seen that the prepared functionalized ordered mesoporous silicon material has an ordered mesoporous structure, a relatively uniform pore size distribution, and a large specific surface area.

Embodiment 2

[0038] A preparation method for synthesizing functionalized ordered mesoporous silicon material using polyacid type ionic liquid as raw material, comprising the following steps:

[0039] 1) Weigh the polyacid ionic liquid [C 16 mim] 3 PW 12 O 400.2840 g was dissolved in 24 mL of acetonitrile, stirred for 30 min to dissolve; the above solution was added to 40.2 mL of deionized water, and 5 mL of ethyl orthosilicate (TEOS) and 1 mL of ammonia water were added to it, and copolycondensed for 1 h.

[0040] 2) The product obtained in the above process was filtered and washed; dried at 80°C for 1 hour, and ground into powder; the powder was heated to 800°C at a rate of 10°C / min in a programmed temperature tube furnace, and kept for 3 hours to obtain a functionalized product. Ordered mesoporous silicon material.

[0041] The product of the above example 2 was determined by the BET method, and the structural parameters of the functionalized ordered mesoporous silicon material were:...

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Abstract

The invention relates to a mesoporous material and particularly relates to a functionalized ordered mesoporous silicon material which is synthesized by taking polyacid-type ionic liquid as a raw material as well as an application of the mesoporous silicon material in oxidation desulfuration of fuel oil. According to the mesoporous silicon material, the polyacid-type ionic liquid is not only used as a template agent of the mesoporous material, but also used as a catalytic activity center, and transition metal is introduced into the mesoporous material structure in situ. A simple and nontoxic synthesis method of the metal-doped green mesoporous material is searched, has a favorable academical research value and also has a wide application prospect in the industrial production. The mesoporous silicon material as well as the preparation method and the application thereof have the advantages that the method is simple in process, and the mesoporous silicon material which is narrow in pore size distribution, regular and ordered in pore duct and good in thermal stability and has the pore size of 2-50nm is self-assembled under the guidance action of inorganic matters and organic matters by adopting a sol-gel method. The purpose of deep desulfuration can be achieved when the mesoporous silicon material is used as a catalyst for an oxidation removing reaction process of organic sulfides.

Description

technical field [0001] The invention relates to a mesoporous material, in particular to a functionalized ordered mesoporous silicon material synthesized from a polyacid ionic liquid as a raw material and its application in the oxidative desulfurization of fuel oil. Background technique [0002] The sulfur-containing compounds in gasoline will produce a large amount of sulfur dioxide during the combustion process. Sulfur dioxide is the main reason for the formation of acid rain, which will cause large-scale environmental pollution and seriously threaten the ecological balance of the earth. The requirements for the sulfur content in gasoline are becoming more and more strict around the world. For the sulfur content in gasoline, the sulfur content of diesel and gasoline in the United States is required to be less than 15ppm and 30ppm. Europe currently requires the sulfur content in gasoline to be less than 30ppm. For the sulfur content in diesel At present, the standard of sulf...

Claims

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Application Information

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IPC IPC(8): B01J23/30C10G27/00
Inventor 朱文帅
Owner 泰州市海创新能源研究院有限公司
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