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- W4210362934 abstract "Sulphur-doped, β-zeolite-templated carbons (S-β-ZTCs) were synthesized by chemical vapor co-deposition of hydrogen sulfide (H 2 S) and acetylene (C 2 H 2 ) to remove ionic (Hg 2+ ) and organic mercury (Hg org ) from gasoline. In situ doping of sulphur introduced aromatic thiols and thiophenes into the ZTC's framework that removed the mercury by forming Hg–S bonds. Notably, these covalently bonded sulphur groups exhibited better stability than physically deposited elemental sulphur, yielding less than 10% material loss after repeated adsorption-desorption tests. Thanks to these unique chemical properties, the adsorption capacity of S-β-ZTCs for Hg 2+ in the gasoline (2660 μg/g) was at least an order of magnitude larger than that of common adsorbents. Moreover, simultaneous adsorption of Hg 2+ and Hg org on S-β-ZTCs proceeded independently when the total mercury concentration was in the range applicable to most natural gas condensate samples. Finally, Grand Canonical Monte Carlo (GCMC) method and Density Functional Theory (DFT) study were used to reveal the adsorption mechanism of ZTCs on Hg 2+ and Hg org . These findings provided a better understanding of the mercury sorption mechanism of S-β-ZTCs and have important practical significance for the clean production of the condensate processing industry. • Renewable S-doped ZTCs were prepared to remove Hg from gasoline. • Sorption capacity for Hg 2+ and Hg org were 58 and 18 times over pristine ZTC. • Chemically bonded S as stable sites for sorption of Hg 2+ and Hg org in micropores. • GCMC and DFT simulation were used to reveal the adsorption mechanism of Hg." @default.
- W4210362934 created "2022-02-08" @default.
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- W4210362934 date "2022-03-01" @default.
- W4210362934 modified "2023-09-24" @default.
- W4210362934 title "Removing ionic and organic mercury from light hydrocarbon liquids by ordered zeolite-templated carbon doped with sulphur" @default.
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- W4210362934 doi "https://doi.org/10.1016/j.jclepro.2022.130698" @default.
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