Properties of an Ethanol-Diethyl Ether-Water Fuel Mixture for Cold-Start Assistance of an Ethanol-Fueled Vehicle

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• 作者：Tomoko Kito-Borsa ; Debra A. Pacas ; Sami Selim ; and Scott W. Cowley
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：1998
• 出版时间：August 1998
• 年：1998
• 卷：37
• 期：8
• 页码：3366 - 3374
• 全文大小：130K
• 年卷期：v.37,no.8(August 1998)
• ISSN：1520-5045

文摘

The on-board catalytic conversion of a portion of the ethanol fuel into diethyl ether and wateris a possible solution to cold-start problems of an ethanol-fueled vehicle. Before an appropriatecatalyst can be selected, it is necessary to obtain information about the thermodynamic propertiesand flammability limits of an ethanol, diethyl ether, and water fuel mixture system. Accordingto the computational results, the on-board catalyst requires a 40-80% ethanol conversion todiethyl ether for the cold-starting and cold operation of a spark ignition engine. A few selectedsolid acid materials are evaluated as potential ethanol dehydration catalysts. Resin-basedcatalysts, such as cross-linked sulfonated polystyrene, fail to satisfy the on-board conversionrequirements while -alumina material gives a better performance.