Abstract: A series of alumina-supported cobalt catalysts promoted with palladium, platinum, and ruthenium were investigated for the synthesis of hydrocarbons from CO and H2. The addition platinum-group metals facilitated the reduction of cobalt and significantly enhanced catalytic activity. At high CO conversion levels, the CO2 content in the gaseous products increased considerably, most likely due to a shift in the water–gas equilibrium toward the right. At a low synthesis temperature (210°C), the 0.15%Ru–15%Co/Al2O3 catalyst demonstrated the highest performance: it exhibited the greatest selectivity toward C5+ hydrocarbons (84.6%) alongside the lowest methane selectivity (8.6%), at CO conversion of 31.0%. However, at 240°C, when CO conversion increased to 86–89%, the selectivity advantages of the Ru- and Pt-promoted catalysts diminished. Under these same conditions, the Pd-promoted catalyst maintained a sufficiently high C5+ selectivity (72.3%), and the content of the valuable diesel fraction (C11–C18) in the synthesized hydrocarbons reached its highest level, accounting for 52% of the total C5+ products.

Cite: Eliseev O.L. , Melnikov D.P. , Smirnova E.M. , Kazantsev R.V. , Demikhova N.R. , Stavitskaya A.V.
Effects of Platinum-Group Promoters for Cobalt-Based Catalysts on Fischer-Tropsch Performance
Petroleum Chemistry. 2026. DOI: 10.1134/s0965544126600220 WOS Scopus OpenAlex

Dates:

Submitted:	Nov 9, 2025
Published print:	Mar 18, 2026

Identifiers:

≡ Web of science:	WOS:001717221200001
≡ Scopus:	2-s2.0-105033288224
≡ OpenAlex:	W7138909805

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