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

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Abstract

Kinetic modeling of CO hydrogenation over Fe–Co–Mn catalyst was investigated; a ternary catalyst was prepared using incipient wetness impregnation. The kinetic parameters were determined from experiments carried out in a fixed bed micro-reactor under the following process conditions: T = 523.15–533.15 K, P = 1–10 bar, H2/CO = 1/1–3/1 and space velocity = 4500 h−1. Seventeen rate expressions were derived from five different mechanisms according to Langmuir–Hinshelwood–Hougen–Watson (LHHW) and Eley–Rideal (ER) mechanisms and were tested against the experimental data. Non-linear regression method was used to estimate different kinetic parameters; according to the obtained experimental results and using statistical criteria, one kinetic expression based on 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 84.5 kJ mol−1. The physicochemical properties of the catalyst were investigated using XRD, SEM, BET and TPR techniques.

Graphical abstract: Development of kinetic model for CO hydrogenation reaction over supported Fe–Co–Mn catalyst

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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, Advance Article
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    Development of kinetic model for CO hydrogenation reaction over supported Fe–Co–Mn catalyst

    M. Arsalanfar, M. Abdouss, N. Mirzaei and Y. Zamani, New J. Chem., 2017, Advance Article , DOI: 10.1039/C6NJ04126D

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