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NICKEL CATALYSTS SUPPORTED ON MgO/SMECTITE-TYPE NANOCOMPOSITES FOR METHANE REFORMING

Alexander Moronta^*,, Nobuhiro Iwasa, Shin-Ichiro Fujita, Masahide Shimokawabe and Masahiko Arai

Division of Materials Science and Engineering, Graduate School of Engineering, Hokkaido University, Kita 12, Nishi 8, Kita-ku, Sapporo 060-8628, Japan

View larger version (34K): [in a new window]   Figure 1. TGA and DTA curves for (a) starting TS and dried Mg-surfactant-exchanged TS (b) TSIGE, (c) TSBR30, and (d) TSBR56.

View larger version (26K): [in a new window]   Figure 2. TGA and DTA curves for calcined MgO-clay nanocomposites: (a) TSIGE, (b) TSBR30, and (c) TSBR56.

View larger version (24K): [in a new window]   Figure 3. Nitrogen adsorption and desorption isotherms of the starting TS clay and calcined TSIGE, TSBR30 and TSBR56 MgO-clay nanocomposites.

View larger version (21K): [in a new window]   Figure 4. XRD patterns for (a) starting TS, (b) TSIGE dried at 110°C, (c) TSIGE calcined at 500°C for 2 days and (d) fresh Ni/TSIGE catalyst.

View larger version (22K): [in a new window]   Figure 5. Conversions of methane over the catalysts studied at 700°C.

View larger version (23K): [in a new window]   Figure 6. Conversions of carbon dioxide over the catalysts studied at 700°C.

View larger version (12K): [in a new window]   Figure 7. XRD patterns of Ni/TS (a) and Ni/TSIGE (b) after reaction for 4 h at 700°C.

View larger version (33K): [in a new window]   Figure 8. TGA and DTA curves of the clay catalysts in oxidizing conditions after reaction for 4 h at 700°C. (a) Ni/TS, (b) Ni/TSIGE, (c) Ni/TSBR30, and (d) Ni/TSBR56.