Ethanol Steam Reforming in a Two-Step Process. Short-Time Feasibility Tests

This paper describes a two-step process for hydrogen generation consisting of low-temperature (573 K) dehydrogenation of ethanol over copper chromite, followed by steam reforming (SR) over Ni/MgO at higher temperature (923 K). Advantages compared to direct SR of ethanol comprise suppression of coke formation. Water also moderates the rate of reduction of copper and promotes the stability of copper chromite at temperatures below 673 K. The two-step process requires a quantity of catalyst for the low-temperature step in excess of that for the high-temperature SR catalyst in order to ensure adequate conversion levels of ethanol in the first step.

[1]  E. Wolf,et al.  Hydrogen production by ethanol decomposition and partial oxidation over copper/copper-chromite based catalysts prepared by combustion synthesis , 2013 .

[2]  M. Serio,et al.  Bioethanol as feedstock for chemicals such as acetaldehyde, ethyl acetate and pure hydrogen , 2013 .

[3]  R. Prasad,et al.  A Review on CO Oxidation Over Copper Chromite Catalyst , 2012 .

[4]  Elio Santacesaria,et al.  Ethanol dehydrogenation to ethyl acetate by using copper and copper chromite catalysts , 2012 .

[5]  Zahira Yaakob,et al.  Steam-reforming of ethanol for hydrogen production , 2011 .

[6]  A. B. Gaspar,et al.  The one-pot ethyl acetate syntheses: The role of the support in the oxidative and the dehydrogenative routes , 2010 .

[7]  V. Parmon,et al.  The state of absorbed hydrogen in the structure of reduced copper chromite from the vibration spectra. , 2009, Physical chemistry chemical physics : PCCP.

[8]  Dennis Y.C. Leung,et al.  A review of biomass-derived fuel processors for fuel cell systems , 2009 .

[9]  V. Parmon,et al.  Mechanistic features of reduction of copper chromite and state of absorbed hydrogen in the structure of reduced copper chromite , 2008 .

[10]  D. Leung,et al.  A review on reforming bio-ethanol for hydrogen production , 2007 .

[11]  Caine M. Finnerty,et al.  REFORMING CATALYSTS FOR HYDROGEN GENERATION IN FUEL CELL APPLICATIONS , 2006 .

[12]  Alírio E. Rodrigues,et al.  Insight into steam reforming of ethanol to produce hydrogen for fuel cells , 2006 .

[13]  R. Prasad.  Highly active copper chromite catalyst produced by thermal decomposition of ammoniac copper oxalate chromate , 2005 .

[14]  K. Waugh,et al.  The detailed kinetics and mechanism of ethyl ethanoate synthesis over a Cu/Cr2O3 catalyst , 2005 .

[15]  T. Kurabayashi,et al.  Effective formation of ethyl acetate from ethanol over Cu-Zn-Zr-Al-O catalyst , 2004 .

[16]  P. Tsiakaras,et al.  Hydrogen production by ethanol steam reforming over a commercial Pd/γ-Al2O3 catalyst , 2004 .

[17]  T. Kurabayashi,et al.  Direct synthesis of ethyl acetate from ethanol carried out under pressure , 2002 .

[18]  E. D’Elia,et al.  Wacker PdCl2–CuCl2 catalytic oxidation process: Oxidation of limonene , 2002 .

[19]  F. Frusteri,et al.  Steam reforming of ethanol on Ni/MgO catalysts: H2 production for MCFC , 2002 .

[20]  Stefano Cavallaro,et al.  Hydrogen Production by Steam Reforming of Ethanol: A Two Step Process , 2000 .

[21]  O. Makarova,et al.  The nature of hydrogen stabilization in the reduced copper chromites , 1996 .

[22]  Yu‐Wen Chen,et al.  Characterization of unsupported copper—chromium catalysts for ethanol dehydrogenation , 1994 .

[23]  M. Moresi,et al.  Kinetics of the dehydrogenation of ethanol to acetaldehyde on unsupported catalysts , 1979 .

[24]  G. Froment,et al.  Kinetic study of the dehydrogenation of ethanol , 1964 .

[25]  J. M. Church,et al.  Acetaldehyde by Dehydrogenation of Ethyl Alcohol , 1951 .