| Autor: |
Peña-Obeso, P., Cervantes-Gaxiola, M. E., Rico, J. L., Díaz de León, J. N., Guevara-Martinez, S., Lumbreras-Pacheco, J. A., Huirache-Acuña, R. |
| Předmět: |
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| Zdroj: |
Topics in Catalysis; May2024, Vol. 67 Issue 9-12, p615-627, 13p |
| Abstrakt: |
NiMoS/TiMg and NiWS/TiMg nanocatalysts were synthesized, characterized by various techniques and tested in the hydrodesulphurization (HDS) of dibenzothiophene (DBT). TiMg mixed oxides containing 5, 10 or 15 wt% of MgO were prepared by sol–gel and then used as catalyst supports. A constant atomic ratio of Ni/(Ni + M) = 0.5 was kept for all the catalysts (M = Mo or W). The catalysts were first prepared by sequential-wet impregnation. Then, after an ex-situ sulfidation process, they were characterized by high resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), and physisorption of N2 following the BET method. The presence of MgO in the NiMoS/TiMg and NiWS/TiMg catalysts resulted in an enhancement in the HDS activity of DBT. In addition, their HDS activities were higher than those observed in the NiMoS/Ti and NiWS/Ti catalysts. Furthermore, higher HDS activity was found for the NiMoS/TiMg compared with their NiWS/TiMg catalysts counterpart. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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