to sio 2 -mtes-aptes composite airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent

A composite aerogel and sulfide technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as low adsorption capacity, achieve high adsorption selectivity, improve hydrophobicity, etc. The effect of increasing the property and specific surface area

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

AI Technical Summary

Problems solved by technology

However, there is a disadvantage of low adsorption capacity. On this basis, adding MTES and introducing -CH 3 , so that the pore size collapses and the specific surface area increases during the normal pressure drying process, thereby improving the adsorption capacity

Method used

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  • to sio <sub>2</sub> -mtes-aptes composite airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent
  • to sio <sub>2</sub> -mtes-aptes composite airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent
  • to sio <sub>2</sub> -mtes-aptes composite airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～2

[0025] Embodiment 1-2: SiO of different ammonia sources 2- Adsorption performance of MTES-APTES composite airgel for thiophene sulfides in simulated gasoline.

[0026] In the SiO prepared by the sol-gel method with a molar ratio of silicon source and ammonia source of 3.2:1 2 -In the MTES-APTES composite airgel, the silicon source used is tetraethyl orthosilicate, and the prepared SiO 2 - MTES-APTES composite airgel is 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 composite airgel with appropriate amount of quartz sand. Before the adsorption experiment started, the packed adsorbent was fully wetted with n-heptane. Feed simulated gasoline, collect the adsorbed simulated gasoline at the outlet of the lower end of the reactor, and carry out chromatographic analysis. When the sulfur...

Embodiment 3～7

[0031] Examples 3-7: SiO with different molar ratios of orthosilicate and 3-aminopropyltriethoxysilane 2 - Adsorption performance of MTES-APTES composite airgel for thiophene sulfides in simulated gasoline. SiO with molar ratios of ethyl orthosilicate and 3-aminopropyltriethoxysilane were 6.3, 4.2, 3.2, 2.5, 2.1, respectively. 2 - MTES-APTES composite airgel was used for breakthrough adsorption experiments on thiophene sulfides in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-2, and the adsorption results are shown in Table 2.

[0032] Table 2 SiO with different moles of tetraethylorthosilicate and 3-aminopropyltriethoxysilane 2 - Adsorption performance of MTES-APTES composite airgel for thiophene sulfides in simulated gasoline

[0033]

[0034] As can be seen from Table 2, along with the reduction of ethyl orthosilicate and 3-aminopropyltriethoxysilane mol ratio, different ethyl orthosilicate and 3-aminopropyltr...

Embodiment 8～12

[0035] Embodiment 8~12: Different space velocity is to SiO 2 - Adsorption performance of MTES-APTES composite airgel for thiophene sulfides in simulated gasoline

[0036] SiO with a molar ratio of tetraethyl orthosilicate to 3-aminopropyltriethoxysilane of 3.2 was selected. 2 - MTES-APTES 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 was the same as in Examples 1-2, and the adsorption results are shown in Table 3.

[0037] Table 3 SiO at different space velocities 2 - Adsorption performance of MTES-APTES composite airgel for thiophene sulfides in simulated gasoline

[0038]

[0039] It can be seen from Table 3 that with the decrease of space velocity, the SiO 2 -The penetration adsorption capacity of MTES-APTES composite airgel to thiophene, benzothiophene and dibenzothiophene wil...

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Abstract

The present invention discloses the use of SiO 2 ‑MTES‑APTES composite airgel is a method for removing thiophene sulfides in fuel oil by an adsorbent, and belongs to the technical field of fuel oil processing. The method uses ethyl orthosilicate as a silicon source, and introduces methyl triethoxysilane for modification, and uses 3-aminopropyl triethoxysilane or 3-aminopropyl trimethoxysiloxane as ammonia Source, SiO was prepared by sol-gel-atmospheric pressure drying method 2 ‑MTES‑APTES composite airgel is filled in a fixed-bed adsorption device, injected with simulated gasoline containing thiophene sulfides at a certain temperature and space velocity, collected the simulated gasoline after adsorption, and carried out chromatographic analysis. The results Show SiO 2 ‑MTES‑APTES composite airgel has good adsorption properties for thiophene sulfides. SiO in the present invention 2 ‑MTES‑APTES 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 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, biol...

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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