Hydrogen Production through Ethanol Steam Reforming on Conducting Heating Alumite Catalysts

Nguyen, Ha Thi Khanh; Guo, Yu; Kawachi, Hideki; Sakurai, Makoto; Kameyama, Hideo

doi:10.1252/jcej.10we269

Cited by 3 publications

(1 citation statement)

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“…It is of great importance to produce hydrogen for polymer electrolyte fuel cells from various kinds of fuels by fuel reforming reactions (Ayabe et al, 2003;Utaka et al, 2003;Nguyen et al, 2011;Sung et al, 2012). In hydrogen production by fuel reforming there are several problems to deal with such as improvement of the catalytic activity, inhibition of carbon deposition on the surface of the catalysts and sintering of active species.…”

Section: Introductionmentioning

confidence: 99%

Novel Nickel Catalysts Based on Spinel-Type Mixed Oxides for Methane and Propane Steam Reforming

Kikuchi

Yokoyama

Takagaki

et al. 2014

J. Chem. Eng. Japan / JCEJ

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Novel nickel catalysts based on magnesium aluminate spinel-type mixed oxides are developed as hydrocarbon reforming catalysts for hydrogen supply to polymer electrolyte fuel cells. The spinel catalysts were prepared by co-precipitation and the Pechini method, and the spinels prepared by the former method exhibited higher activity for methane steam reforming. The e ect of spinel composition, Mg 1 x Ni x Al 2 O 4 (x 0.17, 0.35, 0.50, 0.70, 1) was investigated on the activity and resistance to carbon deposition in steam reforming reaction. The turnover frequency for methane steam reforming at a steam-to-carbon (S/C) ratio of 2 increased with increase in the x value from 0.17 to 0.35, and then gradually decreased with further increase in the nickel content. The carbon deposition tolerance of the spinel catalysts was examined in propane steam reforming at S/C 1 and 600°C. The propane conversion during the reaction was ca. 98% over all catalysts tested, and the amount of deposited carbon, determined as carbon dioxide by temperature programmed oxidation, was least at x 0.17, which is 1/8 of that deposited on a conventional Ni/γ-Al 2 O 3 catalyst. The spinels with x≤0.5 exhibited smaller amounts of carbon deposition, and thus superior tolerance to deactivation.

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Section: Introductionmentioning

confidence: 99%