Route of glycerol conversion and product generation via TiO2-induced photocatalytic oxidation in the presence of H2O2

• DOI: 10.1016/j.cej.2015.06.078
• Publication Date: 2015-06-24T17:43:43Z
• Authors: Trin Jedsukontorn; Vissanu Meeyoo; Nagahiro Saito; Mali Hunsom
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract The objective of this study was to explore the route of glycerol conversion and product generation via the TiO 2 -induced photocatalytic oxidation in the presence of H 2 O 2 . Effects of TiO 2 dosage (1–3 g/L), H 2 O 2 concentration (0.3–1.5 M), light UV intensity (1.1–4.7 mW/cm 2 ) and irradiation time (4–8 h) on the level of glycerol conversion and product selectivity were identified using a 2 k factorial design. It was found that TiO 2 and H 2 O 2 played a simultaneous positive effect on the glycerol conversion in the presence of UV-light. Among all investigated parameters, the most important parameter on glycerol conversion and product selectivity was the irradiation time. Glycerol conversion and product generation can proceed via both h + -mediate and radical-mediated routes, but the radical-mediated route was dominant.