EXAFS study on the dispersion of molybdenum sulfide catalysts on γ-Al2O3 |
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| Authors: | Hiromichi Shimada Nobuyuki Matsubayashi Toshio Sato Yuji Yoshimura Motoyasu Imamura Takashi Kameoka Akio Nishijima |
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| Affiliation: | (1) National Chemical Laboratory for Industry, 305 Tsukuba, Japan;(2) Catalysts and Chemicals Industries Co. Ltd., Wakamatsu, 808 Kitakyushu, Japan |
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| Abstract: | The dispersion of molybdenum sulfide catalysts was characterized based on the lateral dimensions of MoS2 crystallites estimated by EXAFS. A new index ofN(Mo)/N(S), instead ofN(Mo), was used to estimate the average MoS2 size to minimize the contribution of the coexisting oxide or oxisulfide phase in the catalysts. EXAFS showed some advantages over other techniques, such as TEM or XPS. |
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| Keywords: | EXAFS molybdenum sulfide catalyst dispersion |
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