Authors: Christian Schulz, Peter Kolb, Dennis Krupp, Lars Ritter, Alfred Haas, Mario Soorholtz, Carsten Knobloch (hte),
Thomas Emmerich Maldonado, Tobias Benjamin Thiede (Venator)
Catalysts, March 2021
A series of Co/TiO2 catalysts was tested in a parameters field study for Fischer-Tropsch synthesis (FTS). All catalysts were prepared by the conventional impregnation technique to obtain an industrially relevant Co content of 10 wt % or 20 wt %, respectively. In summary, 10 different TiO2 of pure anatase phase, pure rutile phase, as well as mixed rutile and anatase phase were used as supports. Performance tests were conducted with a 32-fold high-throughput setup for accelerated catalyst benchmarking; thus, 48 experiments were completed within five weeks in a relevant operation parameters field (170 ◦C to 233.5 ◦C, H2/CO ratio 1 to 2.5, and 20 bar(g)). The most promising catalyst showed a CH4 selectivity of 5.3% at a relevant CO conversion of 60% and a C5+ productivity of 2.1 gC5+/(gCo h) at 207.5 ◦C. These TiO2 -based materials were clearly differentiated with respect to the application as supports in Co-catalyzed FTS catalysis. The most prospective candidates are available for further FTS optimization at a commercial scal.
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