a kind of sio 2 -Aptes hybrid airgel is a method for removing thiophene sulfides in fuel oil as an adsorbent
A technology for fuel oil and adsorbent, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problem of low dispersion of active components, small specific surface area of adsorbent, adsorption General desulfurization performance and other problems, to achieve good adsorption effect, low requirements, high adsorption selectivity effect
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Embodiment 1~3
[0025] Embodiments 1-3: SiO of different silicon sources 2 - Adsorption performance of APTES hybrid airgel on thiophene sulfides in simulated gasoline.
[0026] SiO prepared by sol-gel method 2 -In the APTES hybrid airgel, the silicon sources used include methyl orthosilicate, ethyl orthosilicate, and silica sol, and the prepared SiO 2 -APTES hybrid 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 -APTES hybrid 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 concentration in the effluent is 0.005mgS / g, it is defined as the bre...
Embodiment 4~5
[0030] Embodiment 4-5: SiO of different ammonia sources 2 - Adsorption performance of APTES hybrid airgel on thiophene sulfides in simulated gasoline.
[0031] The selected ammonia sources include 3-aminopropyltriethoxysilane and 3-aminopropyltrimethoxysiloxane. 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 1-3, and the adsorption results are shown in Table 2.
[0032] Table 2 SiO of different ammonia sources 2 -Adsorption performance of APTES hybrid airgel on thiophene sulfides in simulated gasoline
[0033]
[0034] As can be seen from Table 2, the ammonia source should be selected from 3-aminopropyltriethoxysilane, and the synthesized SiO 2 -APTES hybrid airgel has the largest breakthrough adsorption capacity for thiophene, benzothiophene and dibenzothiophene in the breakthrough adsorption experiment.
[0035] In the following exam...
Embodiment 6~11
[0036] Examples 6-11: SiO with different molar ratios of silicon and ammonia 2 - Adsorption performance of APTES hybrid airgel on thiophene sulfides in simulated gasoline.
[0037] SiO with silicon and ammonia molar ratios of 4, 8, 12, 16, 32, and 64 were selected 2 -APTES hybrid aerogel, the breakthrough adsorption experiment of thiophene sulfide in simulated gasoline. The operation of the breakthrough adsorption experiment is the same as in Examples 1-3, and the adsorption results are shown in Table 3.
[0038] Table 3 SiO with different molar ratios of silicon to ammonia 2 -Adsorption performance of APTES hybrid airgel on thiophene sulfides in simulated gasoline
[0039]
[0040] It can be seen from Table 3 that SiO with different molar ratios of silicon to ammonia 2 - The breakthrough adsorption capacity of APTES hybrid aerogels for thiophene and benzothiophene increases first and then decreases with the increase of the molar ratio of silicon to ammonia. When the m...
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