Citation: CHEN Meng-Nan, ZHANG Dong-Yun, THOMPSON Levi T., MA Zi-Feng. Hydrogen Production from Steam Reforming of Ethanol over Pd Promoted ZnO/Al₂O₃ Catalysts[J]. Acta Physico-Chimica Sinica, ;2011, 27(09): 2185-2190. doi: 10.3866/PKU.WHXB20110824 shu

Hydrogen Production from Steam Reforming of Ethanol over Pd Promoted ZnO/Al₂O₃ Catalysts

1.
1. Department of Chemical Engineering, Shanghai JiaoTong University, Shanghai 200240, P. R. China;
2. Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA;
3. Department of Material Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, P. R. China

Received Date: 29 March 2011
Available Online: 21 June 2011
Fund Project: 国家重点基础研究发展计划项目(973) (2007CB209705)资助 (973) (2007CB209705)

Pd promoted ZnO/Al₂O₃ catalysts were prepared by impregnation method. The hydrogen production performance upon the steam reforming of ethanol (SRE) over the prepared catalysts was evaluated with n(H₂O):n(C₂H₅OH) of 3:1 at 450 °C and atmospheric pressure. The results show that H₂ and CH₃CHO were the main products during the SRE reaction over the prepared catalysts. Different from the ZnO/Al₂O₃ catalysts, the Pd promoted ZnO/Al₂O₃ catalysts favored C－C scission during the SRE and thus a higher C₂H₅OH conversion of 65% and a H₂ selectivity of 55% were obtained over the prepared Pd promoted catalysts. BET, transmission electron microscopy (TEM), and thermogravimetry-differential scanning calorimetry-mass spectrometry (TG-DSC-MS) coupling techniques were used to analyze the coking behavior on the catalyst surface. We found that Pd promotion does not prevent the formation of coke on the ZnO/Al₂O₃ catalysts.
- Ethanol,
- Hydrogen production,
- Palladium,
- Zinc oxide,
- Alumina
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Hydrogen Production from Steam Reforming of Ethanol over Pd Promoted ZnO/Al₂O₃ Catalysts