Photooxidative Desulfurization for Diesel using Fe/N-TiO_2 Photocatalyst

摘要

A series of N-TiO_2 with different mol% N was synthesized via sol-gel method and characterized using thermal gravimetric analyzer and raman spectroscopy. 0.2 wt% Fe was incorporated onto the calcined (200°C) NTiO_2 followed by calcination at 200°C, 250°C and 300°C. Photooxidative desulfurization was conducted in the presence of 0.2wt% Fe/N-TiO_2 with different mol% N with and without oxidant (H_2O_2). Oxidative desulfurization was only achieved when H_2O_2 was used while without H_2O_2 no major effect on the sulfur removal. 0.2Fe-30N-TiO_2 photocatalysts showed best performance at all calcination temperatures as compared to other mol% N-TiO_2 photocatalysts. 16.45% sulfur removal was achieved using photocatalysts calcined at 300 °C.