Mössbauer spectroscopy studies of the preparation steps of unsupported Fe- and FeMo-sulfide hydrotreating catalysts |
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| Authors: | S Göbölös J Ladriére Q Wu B Delmon |
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| Institution: | (1) Catalyse et Chimie des Materiaux Divises, Université Catholique de Louvain, Place Croix du Sud 1, 1348 Louvain-la-Neuve, Belgium;(2) Laboratoire de Chimie Inorganique et Nucleaire, Chemin du Cyclotron 2, Université Catholique de Louvain, 1348 Louvain-la-Neuve, Belgium;(3) Present address: Central Research Institute for Chemistry of the Hungarian Academy of Sciences, POB 17, 1525 Budapest, Hungary;(4) Present address: Beijing Municipal Chemical Industry Research Institute, Cheng Fu, Haidian, P.B. 2653, Beijing, People's Republic of China |
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| Abstract: | Both the gas atmosphere (Ar, 15% H2S−H2, H2) and the temperature of treatment strongly affect the distribution of iron atoms among different phases (FeS2-pyrite, Fe1−x
S-pyrrhotite, FeS-troilite, mixed Fe−Mo−S structure) in Fe- and FeMo sulfide catalysts. In FeMo sulfide catalysts FeS2 (pyrite) and the Fe−Mo−S structure are stabilized by MoS2. |
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