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Development of kinetic model for CO hydrogenation reaction over the supported Fe-Co-Mn catalyst

Abstract

Kinetic modeling of CO hydrogenation over the Fe-Co-Mn catalyst was investigated; the ternary catalyst was prepared using incipient wetness impregnation procedure. The kinetic parameters were determined from experiments carried out in a fixed bed micro-reactor under the process conditions as follows: T=523.15–533.15 K, P=1–10 bar, H2/CO=1/1–3/1 and space velocity of 4500h-1. Seventeen various rate expressions derived from five different mechanisms according to Langmuir-Hinshelwood-Hougen-Watson (LHHW) and Eley-Rideal (ER) type rate mechanisms were tested against the experimental data. Non-linear regression method was used in order to estimate different kinetic parameters; according to the obtained experimental results and using statistical criteria one kinetic expression based on the LHHW mechanism (-rCO=KPCO.(PH2)0.5/[1+αPCO + (βPH2)0.5]2) was chosen as the best fitted model. The activation energy for this model was found to be 84.5kJ/mol. The physicochemical properties of the catalyst were investigated using XRD, SEM, BET and TPR techniques.

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Publication details

The article was received on 06 Jan 2017, accepted on 04 Aug 2017 and first published on 07 Aug 2017


Article type: Paper
DOI: 10.1039/C6NJ04126D
Citation: New J. Chem., 2017, Accepted Manuscript
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    Development of kinetic model for CO hydrogenation reaction over the supported Fe-Co-Mn catalyst

    M. Arsalanfar, M. abdouss, N. Mirzaei and Y. Zamani, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C6NJ04126D

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