The influence of phosphorus and Mo loading on the MoS 2 phase morphology and performance of sulfided Mo/Al 2 O 3 catalysts in HDO of rapeseed oil

Evgeniya N. Vlasova, Vera P. Pakharukova, Galina A. Bukhtiyarova, Irina V. Deliy, Pavel V. Aleksandrov, Aleksander A. Porsin, Evgeny Yu Gerasimov, Valerii I. Bukhtiyarov

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

The effect of Mo loading on the dispersion of sulfide phase and catalytic activity of MoS 2 /Al 2 O 3 catalysts in the rapeseed HDO was studied. Five catalysts with Mo loading between 10 a nd 16 wt.% were prepared by impregnation of alumina with aqueous solutions containing MoO 3 , H 3 PO 4 and citric acid, subsequent drying and high-pressure sulfidation. HDO activity of the MoS 2 /Al 2 O 3 catalysts was enhanced with the Mo content increase from 10 to 12 wt.% and then was decreased with the further increase of Mo loading. The behavior of MoS 2 /Al 2 O 3 and P-MoS 2 /Al 2 O 3 catalysts with the same Mo loading (near 14 wt.%) was compared in the hydrodeoxygenation of rapeseed oil demonstrating the higher activity of P-promoted system. The modeling of XRD patterns with using of the Debye Function Analysis (DFA) gives the lower d XRD of the MoS 2 particles in the P-MoS 2 /Al 2 O 3 catalyst in comparison with MoS 2 /Al 2 O 3 one. We proposed that P incorporation in the MoS 2 slabs can result in a higher deformation of the supported MoS 2 particles, which in turn could have been a reason of higher activity of P-MoS 2 /Al 2 O 3 catalyst.

Язык оригиналаанглийский
Страницы (с-по)321-329
Число страниц9
ЖурналWSEAS Transactions on Environment and Development
Том14
СостояниеОпубликовано - 1 янв 2018

Предметные области OECD FOS+WOS

  • 1.04 ХИМИЧЕСКИЕ НАУКИ

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