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. © 2013 American Chemical Society.
Ethanol steam reforming in a two-step process. short-time feasibility tests
Chiodo V;Freni S;
2013
Abstract
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. © 2013 American Chemical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.