Nickel Sulfides Decorated SiC Foam for the Low Temperature Conversion of H2S into Elemental Sulfur
AbstractThe selective oxidation of H2S to elemental sulfur was carried out on a NiS2/SiCfoam catalyst under reaction temperatures between 40 and 80 °C using highly H2S enriched effluents (from 0.5 to 1 vol.%). The amphiphilic properties of SiC foam provide an ideal support for the anchoring and growth of a NiS2 active phase. The NiS2/SiC composite was employed for the desulfurization of highly H2S-rich effluents under discontinuous mode with almost complete H2S conversion (nearly 100% for 0.5 and 1 vol.% of H2S) and sulfur selectivity (from 99.6 to 96.0% at 40 and 80 °C, respectively), together with an unprecedented sulfur-storage capacity. Solid sulfur was produced in large aggregates at the outer catalyst surface and relatively high H2S conversion was maintained until sulfur deposits reached 140 wt.% of the starting catalyst weight. Notably, the spent NiS2/SiCfoam catalyst fully recovered its pristine performance (H2S conversion, selectivity and sulfur-storage capacity) upon regeneration at 320 °C under He, and thus, it is destined to become a benchmark desulfurization system for operating in discontinuous mode. View Full-Text
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Duong-Viet, C.; Nguyen-Dinh, L.; Liu, Y.; Tuci, G.; Giambastiani, G.; Pham-Huu, C. Nickel Sulfides Decorated SiC Foam for the Low Temperature Conversion of H2S into Elemental Sulfur. Molecules 2018, 23, 1528.
Duong-Viet C, Nguyen-Dinh L, Liu Y, Tuci G, Giambastiani G, Pham-Huu C. Nickel Sulfides Decorated SiC Foam for the Low Temperature Conversion of H2S into Elemental Sulfur. Molecules. 2018; 23(7):1528.Chicago/Turabian Style
Duong-Viet, Cuong; Nguyen-Dinh, Lam; Liu, Yuefeng; Tuci, Giulia; Giambastiani, Giuliano; Pham-Huu, Cuong. 2018. "Nickel Sulfides Decorated SiC Foam for the Low Temperature Conversion of H2S into Elemental Sulfur." Molecules 23, no. 7: 1528.
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