Table 1. Cobalt-Time-Yield (CTY), Product Selectivities, and Hydrocarbon Chain-Growth Probability (α) for Co-Based FT-Catalysts Supported on a Multimodal Meso-Macroporous γ-Al2O3 Support, and Optionally Modified with Various Alkali and Lanthanide Oxide Promotersa.
catalyst | CTYb [mmol CO gCo−1 h−1] | S(CO2) [C%] | S(CH4) [C%] | S(C5+) [C%] | S(C5–10 Olef.) [C%] | αc [-] | C2–4 Olef.d [%] | C5–10 Olef.e [%] |
---|---|---|---|---|---|---|---|---|
CoRu/AOmM | 88.9 | 0.6 | 7.9 | 79.2 | 13.3 | 0.80 | 56.5 | 54.7 |
1.0Na-CoRu/AOmM | 32.9 | 1.0 | 8.0 | 76.0 | 14.4 | 0.77 | 54.3 | 56.2 |
3.0Na-CoRu/AOmM | 8.5 | 8.1 | 10.8 | 53.2 | 10.1 | 0.66 | 36.1 | 53.1 |
1.0K-CoRu/AOmM | 27.5 | 1.3 | 8.6 | 74.4 | 13.9 | 0.78 | 54.1 | 57.2 |
1.0Cs-CoRu/AOmM | 10.9 | 2.9 | 11.4 | 65.0 | 12.1 | 0.71 | 56.7 | 54.6 |
1.0La-CoRu/AOmM | 43.1 | 0.8 | 8.2 | 73.2 | 16.2 | 0.75 | 54.7 | 58.1 |
1.0Pr-CoRu/AOmM | 36.7 | 0.9 | 8.4 | 70.2 | 19.9 | 0.75 | 57.5 | 61.5 |
3.0Pr-CoRu/AOmM | 12.4 | 1.3 | 12.4 | 54.6 | 19.5 | 0.66 | 53.0 | 61.7 |
1.0Sm-CoRu/AOmM | 47.3 | 1.1 | 9.2 | 73.6 | 14.6 | 0.76 | 54.8 | 53.2 |
Reaction conditions: T = 473 K, P = 20 bar, H2/CO = 2, WHSV = 5.1–11.0 h–1, CO conversion = 20 ± 3%.
Cobalt-time-yield.
Chain-growth probability.
Molar olefin abundance within the C2–4 hydrocarbon product fraction.
Molar olefin abundance within the C5–10 hydrocarbon product fraction.