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mechanistic and semi-mechanistic modeling focuses on the rate of syngas conversion. Moreover, the recently reported studies have a detailed, comprehensive kinetic
model that was able to predict the syngas consumption rate as well as the rate of
formation of products. The next section will present a detailed insight into both the
approaches.
3.1 FT Kinetic for the Rate of Syngas Consumption
Since the 1950s, various studies have been published related to kinetic study over
iron [3–5, 7, 28, 42–54] and cobalt [10, 29, 50, 55–64] catalysts. Some proposed
mechanisms have been found in literature, and there is a lack of consensus among
the authors. In a majority of the kinetics works over iron catalysts, the rate expression is represented as a function of the concentration of CO and H 2 . Moreover, the
discrepancy related to the inhibition term (H 2 O and CO 2 ) always remained there.
Fig. 6 CO insertion mechanism
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