Effect of Gallium and Vanadium in NiMoV/Al2O3-Ga2O3 Catalysts on Indole Hydrodenitrogenation
| Autor: | Edgar Marquez, Yelitce Reales, Esneyder Puello-Polo, Luis C. C. Arzuza, Dunieskys G. Larruded, Carlos A.T. Toloza |
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| Rok vydání: | 2020 |
| Předmět: |
Indole test
010405 organic chemistry Chemistry Vanadium chemistry.chemical_element General Chemistry 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Reaction rate constant X-ray photoelectron spectroscopy Hydrogenolysis Hydrodenitrogenation Stoichiometry Nuclear chemistry |
| Zdroj: | Catalysis Letters. 151:2038-2055 |
| ISSN: | 1572-879X 1011-372X |
| Popis: | The effect of Ga as support modifier and V as second promoter on the NiMoV/Al2O3-Ga2O3 catalyst varying the synthesis method (SG: sol–gel synthesis vs I: impregnation synthesis) was studied. The catalysts were characterized by elemental analysis, textural properties, XRD, XPS, 27Al NMR, Raman, EDX elemental mapping and HRTEM. The chemical analyses by XRF showed coincidence between experimental and theoretical values according to stoichiometric values proposed to Mo/Ni = 6 and (V + Ni)/(V + Ni + Mo) = 0.35. The sol–gel synthesis method increased the surface area by incorporation of Ga3+ ions into the Al2O3 forming Ga–O–Al bonding; whereas the impregnation synthesis leads to decrease by blocking of alumina pores, as follows NiMoV/Al2O3-Ga2O3(I) |
| Databáze: | OpenAIRE |
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