Реферат: This paper presents a study on the effect of the Ni–Mo–W precursor calcination (300, 450 and 500 ◦C) on properties of granulated bulk Ni–Mo–W catalysts. The Ni–Mo–W precursor and bulk catalysts were studied by XRD, nitrogen adsorption-desorption method, CHNS analysis, thermal analysis, Raman spectroscopy, UV-Vis DR spectroscopy, HRTEM and XPS. It is shown that the increase in calcination temperature of the precursor to 500 ◦C leads to stepwise decomposition of citric acid, transformation of active metals and re-structurization of the samples. Active metals in sulfide catalysts are present in the bulk mixed or individual sulfides and interact with alumina binder to form “NiMoS-like” sulfide phase. Increased crystallinity of the precursor results in the enlargement of bulk nickel particles, capsulation of Mo and W and their rounding by Ni atoms. Catalysts testing in hydrotreatment of SRVGO demonstrates that the best choice of temperature regimes is 300 ◦C for the precursor.

Библиографическая ссылка: Nadeina K.A. , Vatutina Y.V. , Mukhacheva P.P. , Budukva S.V. , Danilova I.G. , Pakharukova V.P. , Gerasimov E.Y. , Panafidin M.A. , Klimov O.V.
Granular Ni–Mo–W Bulk Hydrotreating Catalyst: The Effects from Precursor Calcination
Наносистемы: физика, химия, математика = Nanosystems: physics, chemistry, mathematics. 2024. V.15. N6. P.837-854. DOI: 10.17586/2220-8054-2024-15-6-837-854

Даты:

Поступила в редакцию:	29 июл. 2024 г.
Принята к публикации:	7 нояб. 2024 г.
Опубликована online:	30 дек. 2024 г.
Опубликована в печати:	30 дек. 2025 г.

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