Hydrogenation of the Aromatics and Olefins in FCC Gasoline During Deep Desulphurisation

Hancsók, Jenő; Marsi, G.; Kasza, Tamás; Kalló, D.

doi:10.1007/s11244-011-9731-9

Cited by 18 publications

(10 citation statements)

References 26 publications

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“…Great variety of olefins are present in gasoline (Hancsók et al 2011). Therefore, the study of ADS in the presence of these compounds is of paramount importance.…”

Section: Effect Of Adsorbent Configuration On Synthetic Gasoline Desulfurizationmentioning

confidence: 99%

Copper-exchanged Y zeolites for gasoline deep-desulfurization

et al. 2019

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Adsorptive desulfurization is one of the most efficient methods to remove recalcitrant sulfur compounds from transportation fuels. Two π-complexation-based sorbents were studied for desulfurization of synthetic gasoline. The sorbents were obtained by ion exchanging Y zeolites with copper cations using different techniques, which includes liquid phase ion exchange (CuY1) and vapor phase ion exchange (CuY2). Preliminary kinetic and equilibrium experiments for sulfur adsorption in batch system showed that CuY1 has the greatest desulfurization capacity and selectivity. The best adsorbent, CuY1 pellet, had a dynamic adsorption and equilibrium capacity of 2.97 and 4.14 mg S/g for fixed bed column assays, respectively. Experimental data obtained to batch reactor and packed bed column have been interpreted by means of a pore diffusion model in which the mass balance to the pellets are emphasized. The model proposed was able to fit well to the experimental data. After the first thermal regeneration, the copper ion-exchanged zeolite presented a maximum recovery of 91.5%. The copper-exchanged zeolite (in pellet form) has shown good uptake rate and regenerability for desulfurization of synthetic gasoline.

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“…Great variety of olefins are present in gasoline (Hancsók et al 2011). Therefore, the study of ADS in the presence of these compounds is of paramount importance.…”

Section: Effect Of Adsorbent Configuration On Synthetic Gasoline Desulfurizationmentioning

confidence: 99%

Copper-exchanged Y zeolites for gasoline deep-desulfurization

et al. 2019

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“…For example, it is shown in [13,[17][18][19] that ASA could promote isomerization and aromatization reaction. The use of ASA in hydrotreating catalysts allows the improvement of catalytic activity in hydrodesulfurization and hydrodenitrogenation reactions [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Advances of isomerizing-hydrogenating properties of CoMo catalysts supported on ASA-Al2O3

Avdeenko

Надеина

Lushchikova

et al. 2022

Preprint

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CoMo/Al2O3-ASA catalysts with different Al2O3/ASA ratio have been studied. The amount of ASA (Si/Al ratio 0.25 wt./wt.) varied from 0 to 100 % in the support. Supports and catalysts were characterized by low-temperature N2 adsorption-desorption, TPD-NH3, IRS of adsorbed pyridine, HRTEM, UV-vis spectroscopy, XPS, XRD, bulk crushing strength. Catalysts were tested in hydrotreating of the model FCC gasoline containing 250 ppm of sulfur from thiophene, 40 wt.% of toluene, 40 wt.% of heptane and 20 wt.% of 1-hexene. It was shown that the introduction of ASA to the support increased the amount of weak Brønsted acid sites and weak and medium Lewis acid sites. The addition of ASA changed the morphology of sulfide active component and extract Co from the composition of the CoMoS phase. It was shown that presence of more than 50 wt.% of ASA in the samples demonstrated significant changes in the selectivity of CoMo catalysts.

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“…The hydrotreating of various straight-run or cracking distillates (i.e., gasoline, diesel, and vacuum gas oil) and residues is extensively achieved using the transition metal sulfides supported on porous materials as catalysts [11][12][13][14][15]. Despite the pioneering research of SLO hydrotreating over alumina-supported Co-Mo or Ni-Mo catalysts that has been reported, their main concern was to remove the sulfur in SLO and thus control the sulfur levels in needle coke [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur

et al. 2021

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As the two types of major impurities in FCC slurry oil (SLO), olefins and sulfur seriously deteriorate the preparation and quality of mesophase pitch or needle coke. The development of a hydrotreatment for SLO to remove olefins and sulfur selectively becomes imperative. This work presents the potentiality of dispersed Mo2C and MoS2 nanoparticles as selective hydrotreating catalysts of SLO. Mo2C was synthesized by the carbonization of citric acid, ammonium molybdate and KCl mixtures while MoS2 was prepared from the decomposition of precursors. These catalysts were characterized by XRD, HRTEM, XPS, BJH, BET, and applied to the hydrotreating of an SLO surrogate with defined components and real SLO. The conversion of olefins, dibenzothiophene and anthracene in the surrogate was detected by GC-MS. Elemental analysis, bromine number, diene value, 1H-NMR and spot test were used to characterize the changes of the real SLO. The results show that hydrotreating the SLO surrogate with a very small amount of Mo-based nanoparticles could selectively remove olefins and sulfur without the overhydrogenation of polyaromatics. Mo2C exhibited much better activity than MoS2, with 95% of olefins and dibenzothiophene in the surrogate removed while only 15% anthracene was hydrogenated. The stability of the real SLO was significantly improved. Its structural parameters changed subtly, proving the aromatic macromolecules had been preserved.

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Hydrogenation of the Aromatics and Olefins in FCC Gasoline During Deep Desulphurisation

Cited by 18 publications

References 26 publications

Copper-exchanged Y zeolites for gasoline deep-desulfurization

Copper-exchanged Y zeolites for gasoline deep-desulfurization

Advances of isomerizing-hydrogenating properties of CoMo catalysts supported on ASA-Al2O3

Molybdenum Carbide and Sulfide Nanoparticles as Selective Hydrotreating Catalysts for FCC Slurry Oil to Remove Olefins and Sulfur

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