Simultaneous hydrodenitrogenation and hydrodesulfurization on unsupported Ni-Mo-W sulfides
| Autor: | Jinyi Han, Santiago Guerra, Oliver Y. Gutiérrez, Johannes A. Lercher, Moritz W. Schreiber, Jennifer Hein, Sylvia Albersberger |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Sulfide 010405 organic chemistry Chemistry Inorganic chemistry Quinoline General Chemistry 010402 general chemistry 01 natural sciences Decomposition Catalysis 0104 chemical sciences chemistry.chemical_compound Adsorption Dibenzothiophene Hydrodenitrogenation Hydrodesulfurization |
| Zdroj: | Catalysis Today. 297:344-355 |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2017.05.083 |
| Popis: | The catalytic properties of unsupported Ni-Mo-W sulfides (composites of Ni-Mo(W)S 2 mixed sulfides and Ni 3 S 2 ) obtained from precursors synthesized via co-precipitation, hydrothermal, and thiosalt decomposition were explored for hydrodenitrogenation (HDN) of o -propylaniline or quinoline in presence and absence of dibenzothiophene undergoing hydrodesulfurization (HDS). The conversion rates varied with the reacting substrate and were related to specific catalyst properties such as morphology, texture, surface and composition. For the HDN of o -propylaniline and the HDS of dibenzothiophene in presence of o -propylaniline, high concentrations of coordinatively unsaturated cationic sites (as characterized by NO adsorption) and the specific surface areas determined the rates of reaction. For the HDN of quinoline and the HDS of dibenzothiophene in the presence of quinoline, the high hydrogenation activity of tungsten sulfide and length of the slabs was found to be more important than in the cases with o -propylaniline. Overall, the activity of unsupported catalysts relates to the size of sulfide slabs provided that Ni is present at the perimeter of the slabs. |
| Databáze: | OpenAIRE |
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