Catalytic oxidative desulphurization of pyrolytic oils to fuels over different waste derived carbon-based catalysts

In this work, we reported the conversion though carbothermal process of two catalysts produced by pyrolyzing exhausted coffee and waste tires. We tailored the surface with anchored iron nanoparticles through a facile carbothermal route and tested them for catalytic oxidative desulphurization of high sulphur content oil derived from tires pyrolysis. We studied their activity in a biphasic system under different conditions reaching a desulphurization of up to of 60% by using an oil with a sulphur concentration of up to 7139 ppm. The extensive characterization proved the reliability of those materials as promising catalysts for upgrading of sulphur rich drop-in fuels.

Automated summary

This study reported the conversion of catalysts produced from exhausted coffee and waste tires through carbothermal process, with iron nanoparticles anchored on the surface to achieve catalytic oxidative desulfurization of high sulfur content oil. The catalysts showed promising results in desulfurization, reaching up to 60% with oil containing up to 7139 ppm sulfur. Extensive characterization confirmed their reliability for upgrading sulfur-rich drop-in fuels.