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| Autor/inn/en | Mueller, Sherry A.; Anderson, James E.; Wallington, Timothy J. |
|---|---|
| Titel | A Classroom Demonstration of Water-Induced Phase Separation of Alcohol-Gasoline Biofuel Blends |
| Quelle | In: Journal of Chemical Education, 86 (2009) 9, S.1045-1048 (4 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0021-9584 |
| Schlagwörter | Fuels; Demonstrations (Educational); Science Instruction; Teaching Methods; Science Activities; Water; Energy; Scientific Principles; Chemistry |
| Abstract | A significant issue associated with ethanol-gasoline blends is the phase separation that occurs with the addition of small volumes of water, producing an ethanol-deficient gasoline layer and an ethanol-rich aqueous layer. The gasoline layer may have a lower-than-desired octane rating due to the decrease in ethanol content, resulting in engine knock, while the ethanol-rich aqueous layer may not support combustion. Ethanol and ethanol-gasoline blends are not distributed via gasoline pipelines (in which water may be present), but are often proportionally blended just prior to delivery to retail outlets. We report a simple demonstration that effectively illustrates this issue by inducing a phase separation upon addition of a small volume of water to various alcohol-gasoline blends. (Contains 3 figures.) (As Provided). |
| Anmerkungen | Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail: jchemed@egpp.com; Web site: http://www.jce.divched.org |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2017/4/10 |
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