Geodesic
Granular Ni--Mo--W bulk hydrotreating catalyst: the effects from precursor calcination
Nanosistemy: fizika, himiâ, matematika, Tome 15 (2024) no. 6, pp. 837-854.

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This paper presents a study on the effect of the Ni–Mo–W precursor calcination (300, 450 and 500$^\circ$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$^\circ$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$^\circ$C for the precursor.
Keywords: bulk catalyst, NiMoW, HDS, HDN.
Mots-clés : calcination 
@article{NANO_2024_15_6_a11,
     author = {Ksenia A. Nadeina and Yuliya V. Vatutina and Polina P. Mukhacheva and Sergey V. Budukva and Irina G. Danilova and Vera P. Pakharukova and Evgeniy Yu. Gerasimov and Maxim A. Panafidin and Oleg V. Klimov},
     title = {Granular {Ni--Mo--W} bulk hydrotreating catalyst: the effects from precursor calcination},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {837--854},
     publisher = {mathdoc},
     volume = {15},
     number = {6},
     year = {2024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2024_15_6_a11/}
}
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AU  - Irina G. Danilova
AU  - Vera P. Pakharukova
AU  - Evgeniy Yu. Gerasimov
AU  - Maxim A. Panafidin
AU  - Oleg V. Klimov
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%0 Journal Article
%A Ksenia A. Nadeina
%A Yuliya V. Vatutina
%A Polina P. Mukhacheva
%A Sergey V. Budukva
%A Irina G. Danilova
%A Vera P. Pakharukova
%A Evgeniy Yu. Gerasimov
%A Maxim A. Panafidin
%A Oleg V. Klimov
%T Granular Ni--Mo--W bulk hydrotreating catalyst: the effects from precursor calcination
%J Nanosistemy: fizika, himiâ, matematika
%D 2024
%P 837-854
%V 15
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NANO_2024_15_6_a11/
%G en
%F NANO_2024_15_6_a11
Ksenia A. Nadeina; Yuliya V. Vatutina; Polina P. Mukhacheva; Sergey V. Budukva; Irina G. Danilova; Vera P. Pakharukova; Evgeniy Yu. Gerasimov; Maxim A. Panafidin; Oleg V. Klimov. Granular Ni--Mo--W bulk hydrotreating catalyst: the effects from precursor calcination. Nanosistemy: fizika, himiâ, matematika, Tome 15 (2024) no. 6, pp. 837-854. http://geodesic.mathdoc.fr/item/NANO_2024_15_6_a11/