Bioethanol steam reforming is one of the most promising route to produce hydrogen from a renewable liquid biofuel. Activity of two Cu-Zn-Al based catalysts was investigated at low temperatures, ranging from 420 to 500 °C, in view of temperature limitations associated with solar energy supply by parabolic trough technology. At 450 °C the space velocity effect was also investigated, by varying the weight hourly space velocity (WHSV) from 1.67 to 3.32 h-1. In each experimental conditions, together with the expected hydrogen and carbon dioxide, also methane, ethylene, acetaldehyde and diethylether were detect as products, so indicating the presence of several parallel reaction pathways. A good selectivity to ethanol reforming was obtained only at 500 °C (with values of the H2/CO2mol ratio of 3.4 and 4.5) with both catalysts, while at lower temperatures alcohol dehydration into acetaldehyde seemed to be the main reaction. © 2010 Professor T. Nejat Veziroglu.
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Sau, G. S., Bianco, F., Lanchi, M., Liberatore, R., Mazzocchia, C. V., Spadoni, A., ... Pin, F. (2010). Cu-Zn-Al based catalysts for low temperature bioethanol steam reforming by solar energy. International Journal of Hydrogen Energy, 35(14), 7280 - 7287. https://doi.org/10.1016/j.ijhydene.2010.04.092