期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 101, 期 3-4, 页码 397-408出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2010.10.009
关键词
Ethanol reforming; Hydrogen production; Cu/Zn/Al2O3 based catalysts
资金
- Universita di Trieste
- Universita Ca' Foscari Venezia
- ICCOM-CNR
- Fondo Trieste
- Regione Friuli Venezia Giulia
Hydrogen production by steam reforming of methanol and ethanol is studied over a series of Cu/ZnO/Al2O3 catalysts prepared by different coprecipitation procedures and modified with the introduction of Ni and Co. The catalysts are characterized using N-2 physisorption, X-ray diffraction (XRD), temperature programmed reduction (TPR) techniques, N2O decomposition, high resolution transmission electron microscopy (HR-TEM) and thermogravimetric analysis (TGA). Despite the influence of the preparation method on the texture and structure of Cu/ZnO/Al2O3 catalysts, their catalytic behavior appears not significantly affected. While Cu/ZnO/Al2O3 shows poor H-2 selectivity in the ethanol steam reforming reaction, the presence of a second metal (Ni or Co) significantly improves the reforming reaction. Although coke deposition remains a drawback for these systems, formation of an alloy between Ni and Cu appreciably reduces carbon deposition with respect to the Co/Cu-based system. (C) 2010 Elsevier B.V. All rights reserved.
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