Experimental Modeling, Analysis, and Solution of Ethanol Coupling for C4 Olefin Production Based on Cubic Spline Interpolation Algorithm
DOI:
https://doi.org/10.54097/rmj84047Keywords:
C4 olefins; Cubic spline interpolation; Polynomial fitting model.Abstract
This paper presents an analysis of ethanol coupling to prepare C4 olefins based on the cubic spline interpolation algorithm. Firstly, the cubic spline interpolation was utilized to fit and plot the trends of temperature, catalyst combination, ethanol conversion rate, and C4 olefin selectivity. Additionally, a polynomial fitting model was established to determine the functional relationships of ethanol conversion rate and C4 olefin selectivity with different catalysts and temperatures, thereby identifying their dependencies on temperature. Subsequently, interpolation fitting was conducted for the variables over time. As the reaction is reversible, a dynamic equilibrium was observed after 273 minutes, allowing for predictive function modeling. Discrepancy analysis between predicted values and experimental data revealed prediction errors of 4.19% and 2.11% for A8 and B7 ethanol conversion rates, and 0.03% and 4.48% for A2 and A3 C4 olefin selectivity, respectively. Combining these errors led to the inference of the catalyst in Appendix II as 200mg1wt%Co/SiO2-200mgHAP with an ethanol concentration of 0.9ml/min.
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S. Wang, Z. Jiang, J. Yang, Y. Tang, and B. Liu, “Design and research on preparation of C4 olefins by ethanol coupling based on logistic,” Energy Reports, vol. 8, pp. 370–376, Jul. 2022.
M. Patrzałek et al., “Testing diverse strategies for ruthenium catalyst removal after aqueous homogeneous olefin metathesis,” Journal of Organometallic Chemistry, vol. 965–966, p. 122320, May 2022.
P. Oliveira et al., “Light olefin transformation over ZSM-5 zeolites with different acid strengths – A kinetic model,” Applied Catalysis A: General, vol. 384, no. 1, pp. 177–185, Aug. 2010.
X. Wang, Y. Men, J. Wang, S. Liu, Q. Song, and M. Yang, “The influence of zinc loadings on the selectivity control of bio-ethanol transformation over MgO-SiO2 catalysts,” Applied Catalysis A: General, vol. 598, p. 117565, May 2020.
S. P. Wrigley, D. A. Oswald, and B. S. Rabinovitch, “On the question of heavy-atom blocking of intramolecular vibrational energy transfer,” Chemical Physics Letters, vol. 104, no. 6, pp. 521–525, Feb. 1984.
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