FUEL 214 |
| The Sulfur-Iodine thermochemical cycle promises high thermal efficiency in hydrogen production from renewable resources. A fundamental step of this system is the Bunsen reaction where sulfur dioxide is oxidized by iodine in the presence of water to produce HI and H2SO4. Currently, this reaction is carried out in an excess of water since aqueous HI and H2SO4 form a biphasic aqueous system enabling ready separation of the products. While this simplifies separation, the excess water must be removed, which becomes an important problem. Examination of the boiling points of the species involved suggests that the separation of the sulfur species {BP(H2SO4)=337°C} from hydrogen iodide {BP(HI)=-35.4°C} may be achieved using their vapour pressures. Our team has elected to investigate the feasibility of this reaction without the large excess of water, using an ionic liquid as a low vapour pressure solvent. We will present initial results of feasibility studies for this process. |
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Ultraclean Transportation Fuels
1:30 PM-5:30 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 239, Oral
Division of Fuel Chemistry |