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Kinetics study on cnt‐supported RuKCo FTS catalyst in a fixed bed reactor
Author(s) -
Trépanier Mariane,
Dion Christopher A. Dorval,
Dalai Ajay K.,
Abatzoglou Nicolas
Publication year - 2011
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.20498
Subject(s) - microreactor , catalysis , space velocity , fischer–tropsch process , thermodynamics , kinetics , activation energy , syngas , chemistry , rate equation , kinetic energy , reaction rate , chemical kinetics , materials science , physics , organic chemistry , classical mechanics , selectivity
The rate of syngas (H 2 /CO) consumption over a RuKCo/CNT Fischer–Tropsch synthesis (FTS) catalyst was measured in a fixed bed microreactor at 210–225°C, 2–3.5 MPa, H 2 /CO feed molar ratios of 1–2.5, and gas hourly space velocity (GHSV) range of 2700–3600 h −1 . The data have been used to model the kinetics of the FTS reactions within the range of the studied conditions. One empirical power law model and four semi‐empirical kinetic models based on Langmuir–Hinshelwood‐type equation have been evaluated. The best fitting was obtained with the equation:$${-} r_{H_{2} + CO} = {{18.5 \times 10^{{-} 5} P_{H_{2} }^{0.39} } \over {(1 + 7.2 \times 10^{{-} 2} P_{CO}^{0.72} P_{H_{2} }^{0.1} )^{2} }}$$similar to that proposed by Brötz et al. The estimated activation energy ( E = 80–85 kJ/mol) is lower than that is reported in the literature. The validity of these results are restricted to fixed beds with the given catalyst in the tested conversion regime.