Preparation of 27Ni6Zr4O143M(M=Mg, Ca, Sr, or Ba)O/70 Zeolite Y Catalysts and Hydrogen-rich Gas Production by Ethanol Steam Reforming

In this study the effects of adding alkaline-earth (IIA) metal oxides to NiZr-loaded Zeolite Y catalysts were investigated on hydrogen rich production by ethanol steam reforming (ESR). Four kinds of alkaline-earth metal (Mg, Ca, Sr, or Ba) oxides of 3.0% by weight were loaded between the Ni6Zr4O14 main catalytic species and the microporous Zeolite Y support. The characterizations of these catalysts were examined by XRD, TEM, H2- TPR, NH3-TPD, and XPS. Catalytic performances during ESR were found to depend on the basicity of the added alkaline-earth metal oxides and H2 production and ethanol conversion were maximized to 82% and 98% respectively in 27(Ni6Zr4O14)3MgO/70Zeolite Y catalyst at 600 oC. Many carbon deposits and carbon nano fibers were seen on the surface of 30Ni6Zr4O14/70Zeolite Y catalyst but lesser amounts were observed on alkaline-earth metal oxide-loaded 27(Ni6Zr4O14)3MO/70Zeolite Y catalysts in TEM photos after ESR. This study demonstrates that hydrogen yields from ESR are closely related to the acidities of catalysts and that alkaline-earth metal oxides reduce the acidities of 27(Ni6Zr4O14)3MO/70Zeolite Y catalysts and promote hydrogen evolution by preventing progression to hydrocarbons.

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Cite this article

[IEEE Style]

D. Kim, J. S. Lee, G. Lee, B. Choi, M. Ji, S. Park, M. Kang, "Preparation of 27Ni₆Zr₄O₁₄3M(M=Mg, Ca, Sr, or Ba)O/70 Zeolite Y Catalysts and Hydrogen-rich Gas Production by Ethanol Steam Reforming," Bulletin of the Korean Chemical Society, vol. 34, no. 7, pp. 2073-2080, 2013. DOI: 10.5012/bkcs.2013.34.7.2073.

[ACM Style]

Dongjin Kim, Jun Su Lee, Gayoung Lee, Byung-Hyun Choi, Mi-Jung Ji, Sun-Min Park, and Misook Kang. 2013. Preparation of 27Ni₆Zr₄O₁₄3M(M=Mg, Ca, Sr, or Ba)O/70 Zeolite Y Catalysts and Hydrogen-rich Gas Production by Ethanol Steam Reforming. Bulletin of the Korean Chemical Society, 34, 7, (2013), 2073-2080. DOI: 10.5012/bkcs.2013.34.7.2073.

Preparation of 27Ni₆Zr₄O₁₄3M(M=Mg, Ca, Sr, or Ba)O/70 Zeolite Y Catalysts and Hydrogen-rich Gas Production by Ethanol Steam Reforming

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