Ex-Situ Synthesis and Study of Nanosized Mo-Containing Catalyst for Petroleum Residue Hydro-Conversion

• Main Authors: Malkan Kh. Kadieva, Anton L. Maximov, Khusain M. Kadiev
• Format: Article
• Language: English
• Published: MDPI AG 2019-07-01
• Series: Catalysts
• Subjects: molybdenum disulfide; reverse emulsion; petroleum residue; nanosized particles; sulfur; thiocarbamide; hydro-conversion
• Online Access: https://www.mdpi.com/2073-4344/9/8/649

This study represents the results of ex-situ synthesis and research of the properties of concentrated suspensions with new catalysts for petroleum residue hydro-conversion. Suspensions were prepared and stabilized in a petroleum residue medium through reverse emulsions containing water-soluble Mo-precursor and S-containing agents (elemental sulfur, thiocarbamide) in the absence of a solid carrier. The resulting ex-situ catalyst dispersions had Mo content of 6−10 wt % and contained nanosized and submicron catalyst particles stabilized in a petroleum residue medium. The effects of S-containing agents on the properties of catalytic particles (sulfidation level, dispersity, structural and morphological features) were studied. The synthesis conditions for the optimal ex-situ catalyst providing the lowest coke yield (0.2 wt %) and the highest conversion (55.5 wt %) during petroleum residue hydro-conversion in a single pass mode have been determined.