Abstract
The use of titania (TiO2) or sulfated titania (SO42-/TiO2) catalysts with different calcination temperatures was studied to study the influence of phase structure on the dehydration of sorbitol to isosorbide. The unsulfated titania calcination temperature and the acid density of the sulfated catalysts significantly influenced catalytic performance. The anatase-phase catalyst calcined at 400 °C and sulfated with 0.1 M sulfuric acid showed excellent performance, full sorbitol conversion, and an isosorbide yield of about 61 % was achieved. This work provides insight into optimizing the phase structure of sulfated catalysts for isosorbide production.
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