H2 is considered to be a potential alternative fuel due to its high energy density by weight and working with pollution free. Currently, ethanol conversion to hydrogen has drawn much attention because it provides a viable way for H2 production from renewable resources. In this work, we combined theoretical and experimental efforts to study the reaction mechanism of ethanol steam reforming on Rh catalysts. The results suggest that acetaldehyde (CH3CHO) is an important reaction intermediate in the reaction on nano-sized Rh catalyst. Our theoretical work suggests that the H-bond effect significantly modifies the ethanol decomposition pathway. The possible reaction pathway on Rh (211) surface is suggested as: CH3CH2OH → CH3CH2O → CH3CHO → CH3CO → CH3+CO → CH2+CO → CH+CO → C+CO, followed by the water gas shift reaction to yield H2 and CO2. It was found that that the water gas shift reaction is paramount in the ethanol steam reforming process.
|Number of pages||1|
|Publication status||Published - 10 Aug 2014|
|Event||248th ACS National Meeting and Exposition (American-Chemical-Society) - San Francisco, United States|
Duration: 10 Aug 2014 → 14 Aug 2014
|Conference||248th ACS National Meeting and Exposition (American-Chemical-Society)|
|Period||10/08/2014 → 14/08/2014|