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use sio 2 -Mtes-aptes-ag composite airgel method for removing thiophene sulfides from fuel oil

A composite airgel and sulfide technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problem of increasing specific surface area, reducing pore size collapse, and low adsorption capacity, etc. problems, to achieve the effect of increasing specific surface area, improving adsorption performance, and high adsorption selectivity

Active Publication Date: 2022-02-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But SiO 2 -APTES airgel has the disadvantage of low adsorption capacity, by adding MTES, the SiO 2 Surface introduction of -CH 3 Improve the hydrophobicity, so that the pore size collapse decreases during the normal pressure drying process, thereby increasing the specific surface area

Method used

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  • use sio <sub>2</sub> -Mtes-aptes-ag composite airgel method for removing thiophene sulfides from fuel oil
  • use sio <sub>2</sub> -Mtes-aptes-ag composite airgel method for removing thiophene sulfides from fuel oil
  • use sio <sub>2</sub> -Mtes-aptes-ag composite airgel method for removing thiophene sulfides from fuel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～30 and comparative example 1～2

Embodiment 1～5

[0029] Examples 1-5: SiO with different silicon-silver molar ratios 2 - Adsorption performance of MTES-APTES-Ag composite airgel for thiophene sulfides in simulated gasoline.

[0030] SiO prepared by sol-gel method 2 -In the MTES-APTES-Ag composite airgel, the silicon source used is ethyl orthosilicate, and the prepared SiO 2 -MTES-APTES-Ag composite airgel was used for penetration adsorption desulfurization experiment, the specific operation is as follows: In the fixed bed reactor, the bottom layer is filled with an appropriate amount of absorbent cotton, and then filled with 1g of SiO 2 - MTES-APTES-Ag composite airgel with appropriate amount of quartz sand. Before the adsorption experiment started, the packed adsorbent was fully wetted with n-heptane. Pass through the simulated gasoline, collect the adsorbed simulated gasoline at the outlet of the lower end of the reactor, and conduct chromatographic analysis. When the sulfur concentration in the effluent is 0.005mgS / g, ...

Embodiment example 6～10

[0034] Implementation Cases 6-10: Effects of different space velocities on SiO 2 - Adsorption performance of MTES-APTES-Ag composite airgel for thiophene sulfides in simulated gasoline

[0035] Choose SiO with a silicon-silver molar ratio of 37.5:1 2 - MTES-APTES-Ag composite airgel. at an airspeed of 1h -1 、3h -1 、5h -1 、8h -1 、10h -1 Next, the breakthrough adsorption experiment was carried out on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-5, and the adsorption results are shown in Table 2.

[0036] Table 2 SiO at different space velocities 2 - Adsorption performance of MTES-APTES-Ag composite airgel for thiophene sulfides in simulated gasoline

[0037]

[0038] It can be seen from Table 2 that as the space velocity decreases, the SiO 2 -The breakthrough adsorption capacity of MTES-APTES-Ag composite airgel to thiophene, benzothiophene and dibenzothiophene will gradually increase,...

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Abstract

The invention discloses the use of SiO 2 The invention discloses a method for removing thiophene sulfides in fuel oil with MTES-APTES-Ag composite airgel, belonging to the technical field of fuel oil processing. The method uses tetraethyl orthosilicate as a silicon source, 3-aminopropyltriethoxysilane as an ammonia source, and introduces methyltriethoxysilane for modification, uses silver nitrate as a silver source, and uses sol-gel Glue—SiO obtained by drying under normal pressure 2 ‑MTES‑APTES‑Ag composite airgel, quantitatively filling it in a fixed bed adsorption device, injecting simulated gasoline containing thiophene sulfides at a certain temperature and space velocity, and collecting the adsorption at the outlet of the lower end of the reaction device After that, the simulated gasoline was subjected to chromatographic analysis. The results showed that SiO 2 ‑MTES‑APTES‑Ag composite airgel has good adsorption properties for thiophene sulfides. SiO in the present invention 2 The ‑MTES‑APTES‑Ag composite airgel adsorbent has a simple preparation method and low cost. The adsorbent can be reused many times, has high economic benefits, is environmentally friendly, has mild adsorption conditions, and has low requirements for adsorption equipment.

Description

technical field [0001] The invention belongs to the technical field of fuel oil processing, in particular to a SiO 2 -MTES-APTES-Ag composite airgel is a method for adsorbent to remove thiophene sulfides in fuel oil. Background technique [0002] With the vigorous development of the automobile industry, the large amount of sulfide emissions from automobile exhaust not only makes environmental pollution more and more serious, but also threatens human health. Fuel cells also have very high requirements on the sulfur content in fuel oil. The presence of organic sulfides will poison the catalyst in the fuel cell electrodes, making the fuel cells unable to effectively convert the chemical energy in diesel gasoline into electrical energy. Therefore, the deep desulfurization of fuel oil has become the focus of global attention. [0003] At present, the desulfurization technology of fuel oil mainly includes hydrodesulfurization technology, alkylation desulfurization technology, bi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C10G25/00C10G25/12
CPCB01J20/22B01J20/103B01J20/28047B01J20/28083B01J20/28064B01J20/28066B01J20/28054C10G25/003C10G25/12C10G2400/02C10G2300/201
Inventor 陈飞帆张波卢永康殷路霞
Owner ZHEJIANG UNIV OF TECH
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