Preparation, structural characterization and catalytic properties of Co/CeO2 catalysts for the steam reforming of ethanol and hydrogen production

JOURNAL OF POWER SOURCES

卷:216

Article

Lovon, Adriana S. P.²  Lovon-Quintana, Juan J.²  Almerindo, Gizelle I.²  Valenca, Gustavo P.²  Bernardi, Maria I. B.³  Araujo, Vinicius D.³  Rodrigues, Thenner S.¹  Robles-Dutenhefner, Patricia A.¹  Fajardo, Humberto V.¹ 

[1] Univ Fed Ouro Preto, Dept Quim, BR-35400000 Ouro Preto, MG, Brazil

[2] Univ Estadual Campinas, UNICAMP, Fac Engn Quim, BR-13083970 Campinas, SP, Brazil

[3] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

关键词: Cobalt;    Cerium;    Ethanol steam reforming;    Hydrogen;    Pechini method;   

DOI  :  10.1016/j.jpowsour.2012.05.066

来源: Elsevier

【 摘 要 】

In this paper, Co/CeO2 catalysts, with different cobalt contents were prepared by the polymeric precursor method and were evaluated for the steam reforming of ethanol. The catalysts were characterized by N-2 physisorption (BET method), X-ray diffraction (XRD), UV-visible diffuse reflectance, temperature programmed reduction analysis (TPR) and field emission scanning electron microscopy (FEG-SEM). It was observed that the catalytic behavior could be influenced by the experimental conditions and the nature of the catalyst employed. Physical-chemical characterizations revealed that the cobalt content of the catalyst influences the metal-support interaction which results in distinct catalyst performances. The catalyst with the highest cobalt content showed the best performance among the catalysts tested, exhibiting complete ethanol conversion, hydrogen selectivity close to 66% and good stability at a reaction temperature of 600 degrees C. (c) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

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