TY - JOUR

T1 - Design of improved CoMo hydrotreating catalyst via engineering of carbon nanotubes@alumina composite support

AU - Kazakova, Mariya A.

AU - Vatutina, Yulia V.

AU - Selyutin, Alexander G.

AU - Prosvirin, Igor P.

AU - Gerasimov, Evgeniy Yu

AU - Klimov, Oleg V.

AU - Noskov, Alexander S.

AU - Kazakov, Maxim O.

N1 - The study was funded by Russian Science Foundation according to the research project № 21‐73‐10039 , https://rscf.ru/project/21‐73‐10039/, and in part (XRF study) by the Ministry of Science and Higher Education of the Russian Federation within the state assignment for Boreskov Institute of Catalysis (project АААА‐А21‐121011390054‐1 ). Публикация для корректировки.

PY - 2023/7/5

Y1 - 2023/7/5

N2 - An efficient strategy for the synthesis of nanostructured composite supports for CoMoS hydrotreating catalysts has been proposed. The synthesis concept is based on the growth of multi-walled carbon nanotubes (MWCNTs) on alumina crystallites modified with Fe2Co nanoparticles. The morphology and structural characteristics of the obtained MWCNT@Al2O3 supports were tuned by varying Fe2Co content. A comprehensive analysis using advanced techniques revealed the optimal content and structural characteristics of MWCNTs in composite supports that positively affect the morphology of the sulfide component. It has been established that for the best CoMoS/MWCNT@Al2O3 catalyst, which is characterized by the highest dispersion of sulfide component and CoMoS phase content, the activity in dibenzothiophene hydrodesulfurization and quinoline hydrodenitrogenation significantly exceeds the activity of CoMoS/Al2O3 and CoMoS/MWCNT catalysts. The proposed approach can be applied to improve the activity of both conventionally used hydrotreating catalysts and catalysts for other practically important processes by carefully tuning metal-support interaction.

AB - An efficient strategy for the synthesis of nanostructured composite supports for CoMoS hydrotreating catalysts has been proposed. The synthesis concept is based on the growth of multi-walled carbon nanotubes (MWCNTs) on alumina crystallites modified with Fe2Co nanoparticles. The morphology and structural characteristics of the obtained MWCNT@Al2O3 supports were tuned by varying Fe2Co content. A comprehensive analysis using advanced techniques revealed the optimal content and structural characteristics of MWCNTs in composite supports that positively affect the morphology of the sulfide component. It has been established that for the best CoMoS/MWCNT@Al2O3 catalyst, which is characterized by the highest dispersion of sulfide component and CoMoS phase content, the activity in dibenzothiophene hydrodesulfurization and quinoline hydrodenitrogenation significantly exceeds the activity of CoMoS/Al2O3 and CoMoS/MWCNT catalysts. The proposed approach can be applied to improve the activity of both conventionally used hydrotreating catalysts and catalysts for other practically important processes by carefully tuning metal-support interaction.

KW - Alumina

KW - CoMo catalyst

KW - Composite support

KW - Hydrotreating

KW - Multi-walled carbon nanotubes

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85149742905&origin=inward&txGid=c6ad20c04b35ddbf5e81188116c1b058

UR - https://www.mendeley.com/catalogue/c0b980bd-9a79-3e23-bc86-68290a352c92/

U2 - 10.1016/j.apcatb.2023.122475

DO - 10.1016/j.apcatb.2023.122475

M3 - Article

VL - 328

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

SN - 0926-3373

M1 - 122475

ER -