New Insights into the Formation of Bulk NiMo Hydrotreating Catalysts: Influence of the Ni/Mo Molar Ratio | Sciact - CRIS-система Института катализа

New Insights into the Formation of Bulk NiMo Hydrotreating Catalysts: Influence of the Ni/Mo Molar Ratio Научная публикация

Журнал

Fuel
ISSN: 0016-2361 , E-ISSN: 1873-7153

Вых. Данные

Год: 2025, Том: 390, Номер статьи : 134750, Страниц : DOI: 10.1016/j.fuel.2025.134750

Ключевые слова

Bulk catalysts; Hydrodesulfurization; NiMo catalysts; Ni content; Vacuum gasoil

Авторы

Nadeina K.A. ¹ , Vatutina Yu.V. ¹ , Mukhacheva P.P. ¹ , Budukva S.V. ¹ , Panafidin M.A. ² , Danilova I.G. ¹ , Pakharukova V.P. ¹ , Gerasimov E.Yu. ¹ , Krestyaninova V.S. ¹ , Klimov O.V. ¹ , Noskov A.S. ¹

Организации

1	Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
2	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, Nikolsky prospect, 1, Kol’tsovo 630559, Russia

Информация о финансировании (1)

Российский научный фонд

22-73-10144

A series of granular NiMo bulk catalysts with Ni/Mo molar ratio – 0.5–2.0, and alumina as a binder was prepared by the spray drying of Ni-Mo-citrate solution followed by calcination, plasticizing and granulation. The samples were characterized by a variety of techniques (N2 physisorption, XRD, UV–vis DRS, IR spectroscopy, STEM, EDS and XPS). The catalytic activity was evaluated in the hydrotreating of SRVGO, carried out in a fixed bed reactor at P = 5.0 MPa, volume ratio H2/SRVGO = 600 Nm3/m3, WHSV = 1.5 h−1, T1 = 360 °C, T2 = 380 °C. The investigation techniques data show that the catalysts with low Ni/Mo molar ratio contain amorphous phases, AlOOH and crystal NiMoO4. After sulfiding, it results in the formation of bulk spherical particles of MoS2 and some MoS2 being distributed over alumina binder in sulfide catalysts. Ni is distributed on the inner part of the formed MoS2 or as NiMoS phase. When Ni content increases, the catalysts mostly contain amorphous Ni-Mo phase and some crystallite Mo-containing phase (Ni/Mo molar ratio of 2), spherical particles lose their «correct» spherical shape and Ni particles become much bigger. It also leads to the collapse of catalyst’s texture. XPS data show correlation between NiNiMoS/Mo4+ and rate constant of HDS reactions. According to residual S content, the highest HDS volume activity was observed for the catalyst with Ni/Mo molar ratio of 1/1 at both process temperatures. The values of residual N content correlate well with residual S content in hydrotreating products.

Nadeina K.A. , Vatutina Y.V. , Mukhacheva P.P. , Budukva S.V. , Panafidin M.A. , Danilova I.G. , Pakharukova V.P. , Gerasimov E.Y. , Krestyaninova V.S. , Klimov O.V. , Noskov A.S.
New Insights into the Formation of Bulk NiMo Hydrotreating Catalysts: Influence of the Ni/Mo Molar Ratio
Fuel. 2025. V.390. 134750 . DOI: 10.1016/j.fuel.2025.134750 Scopus OpenAlex СКИФ ID

Поступила в редакцию:	24 дек. 2024 г.
Принята к публикации:	14 февр. 2025 г.
Опубликована online:	15 февр. 2025 г.
Опубликована в печати:	15 июн. 2025 г.

Scopus:	2-s2.0-85217974309
OpenAlex:	W4407768993
СКИФ ID:	3709

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