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- W2509914484 abstract "Abstract Removal of sulfur from transportation fuels using zeolites as sorbents is an attractive desulfurization method, because of its low energy and cost requirements. However, diffusion limitations within the micropore structure of zeolites can reduce their adsorption capacity, especially when refractory sulfur compounds are present in fuels. Moreover, the selective adsorption of sulfur compounds from a mixture of hydrocarbons can be very challenging. The objective of this study was to address the aforementioned challenges of adsorptive desulfurization of fuels using metal-exchanged mesoporous Y zeolites. Mesoporosity was introduced in the Y zeolites by two top-down methods (desilication and surfactant-assisted). Metals, Ce and Cu, were introduced via ion-exchange. The prepared metal-exchanged mesoporous zeolites were characterized and tested in terms of their sulfur adsorption capacity using a fixed-bed column and model fuels. The strength of adsorption was determined using isosteric heat of adsorption calculations. Our results demonstrated that mesoporous Y reduced diffusion limitations and were very effective sorbents for removing sulfur compounds with high kinetic diameter, such as dibenzothiophene (DBT). Metals highly increased the selectivity toward sulfur compounds. According to experimental results, the tendency of thiophenic molecules to adsorb on the zeolites increase in the order of thiophene (TP)" @default.
- W2509914484 created "2016-09-16" @default.
- W2509914484 creator A5010949720 @default.
- W2509914484 creator A5030783179 @default.
- W2509914484 date "2017-02-01" @default.
- W2509914484 modified "2023-09-29" @default.
- W2509914484 title "Investigation of metal-exchanged mesoporous Y zeolites for the adsorptive desulfurization of liquid fuels" @default.
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- W2509914484 doi "https://doi.org/10.1016/j.apcatb.2016.08.018" @default.
- W2509914484 hasPublicationYear "2017" @default.
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