Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Effect of Diethylene Glycol on the Formation of the Oxide Precursor of the Nickel–Molybdenum Hydrotreating Catalyst. / Nuzhdin, A. L.; Vlasova, E. N.; Dovlitova, L. S. и др.
в: Russian Journal of Applied Chemistry, Том 95, № 7, 01.07.2022, стр. 929-933.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Effect of Diethylene Glycol on the Formation of the Oxide Precursor of the Nickel–Molybdenum Hydrotreating Catalyst
AU - Nuzhdin, A. L.
AU - Vlasova, E. N.
AU - Dovlitova, L. S.
AU - Volodin, V. A.
AU - Bukhtiyarova, G. A.
N1 - FUNDING: The study was fi nancially supported by the Russian Science Foundation (project no. 22-13-00371).
PY - 2022/7/1
Y1 - 2022/7/1
N2 - The effect of diethylene glycol addition on the formation of oxide precursors of nickel–molybdenum sulfide hydrotreating catalysts was studied by Raman spectroscopy and differential dissolution. The NiMoP/Al2O3 catalyst was prepared by impregnation of γ-alumina with an aqueous solution obtained by successive dissolution of H3PO4, MoO3, and Ni(OH)2 in water. To prepare the NiMoP-diethylene glycol/Al2O3 catalyst, diethylene glycol was added to the impregnation solution. On contact of the impregnation solution with γ-alumina, the HxP2Mo5O23(6−x)− heteropolyanions initially present in the solution decompose to form polymolybdates. Without organic additive, the heptamolybdate anion (Mo7O246−) is formed, whereas the use of diethylene glycol leads to the formation of polymolybdates of different structures, mainly with high degree of polymerization. In contrast to Mo7O246−, such polymolybdates are probably incapable of interacting with the support surface to generate aluminum molybdates that do not form the most active “NiMoS” phase.
AB - The effect of diethylene glycol addition on the formation of oxide precursors of nickel–molybdenum sulfide hydrotreating catalysts was studied by Raman spectroscopy and differential dissolution. The NiMoP/Al2O3 catalyst was prepared by impregnation of γ-alumina with an aqueous solution obtained by successive dissolution of H3PO4, MoO3, and Ni(OH)2 in water. To prepare the NiMoP-diethylene glycol/Al2O3 catalyst, diethylene glycol was added to the impregnation solution. On contact of the impregnation solution with γ-alumina, the HxP2Mo5O23(6−x)− heteropolyanions initially present in the solution decompose to form polymolybdates. Without organic additive, the heptamolybdate anion (Mo7O246−) is formed, whereas the use of diethylene glycol leads to the formation of polymolybdates of different structures, mainly with high degree of polymerization. In contrast to Mo7O246−, such polymolybdates are probably incapable of interacting with the support surface to generate aluminum molybdates that do not form the most active “NiMoS” phase.
KW - NiMoP/Al2O3 catalyst
KW - Raman spectroscopy
KW - diethylene glycol
KW - differential dissolution
KW - hydrodesulfurization
KW - oxide precursor
UR - https://www.scopus.com/inward/record.url?eid=2-s2.0-85146303523&partnerID=40&md5=341cd28ba0c56e3e2ade401b6966a28c
UR - https://elibrary.ru/item.asp?id=50305692
UR - https://www.mendeley.com/catalogue/55b0f398-8b6d-3ca1-abc8-e7ba9a3996a4/
U2 - 10.1134/S1070427222070023
DO - 10.1134/S1070427222070023
M3 - Article
VL - 95
SP - 929
EP - 933
JO - Russian Journal of Applied Chemistry
JF - Russian Journal of Applied Chemistry
SN - 1070-4272
IS - 7
ER -
ID: 45608453