Preparation, evaluation and characterization of copper catalysts for ethanol fuelled diesel engines

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• 作者：Wahlberg ; Annika ; Pettersson ; Lars J. ; Bruce ; Karin ; Andersson ; Martin ; Jansson ; Kjell
• 关键词：Exhaust gas catalysts ; Ethanol ; Copper ; Alumina ; Titania ; Monolith ; Preparation ; Impregnation ; Deposition precipitation
• 刊名：Applied Catalysis B: Environmental
• 出版年：1999
• 出版时间：December 6, 1999
• 年：1999
• 卷：23
• 期：4
• 页码：271-281
• 全文大小：3.23 M

文摘

Copper-based monolithic honeycomb catalysts for ethanol fuelled diesel engines have been prepared and evaluated. The washcoat consisted either of alumina or titania. Two different methods to apply the active material were used; incipient wetness impregnation and deposition precipitation. The catalysts have been evaluated in a laboratory reactor and have been characterised using SEM, XRPD, TEM, TPR, XPS, BET surface area and pore-size distribution measurements. Both the choice of washcoat material as well as the preparation method is of importance. Titania as washcoat gave a better performing catalyst than alumina in this case. Deposition precipitation gave a better catalyst than incipient wetness impregnation when alumina was used as washcoat, as well as at low temperatures for titania catalysts.