Study of CuCoZnAl oxide as catalyst for the hydrogen production from ethanol reforming

AGUSTÍN E. GALETTI; MANUEL F. GOMEZ; LUIS A. ARRUA; ALBERTO J. MARCHI; MARIA CRISTINA ABELLO

CATALYSIS COMMUNICATIONS

Elsevier

Año: 2008 vol. 9 p. 1201 - 1208

1566-7367

Ethanol steam reforming was studied over CuCoZnAl oxide with the addition of potassium. The catalyst was prepared by the coprecipitation method and characterized by X-ray diffraction, thermogravimetry, Raman spectroscopy, temperature programmed reduction, BET specific surface area and SEM-EDAX. The influence of reaction temperature was examined between 400 and 600 °C with a H2O/C2H5OH molar ratio of 3.8. At 600 °C, the catalyst was very active with an ethanol conversion of 100%. The main products were CO2 and CO and minor amounts of CH4. The hydrogen yield was 5.2 mol of H2 per mol of ethanol, which means a high hydrogen selectivity (87%). Stable activity and selectivity were obtained at 600 °C which could be attributed to the removing of carbonaceous deposits.