Abstract
To derive a kinetic model for dry reforming of methanol, the experimental investigations were accomplished at vast working conditions (i.e., temperature: 500 °C–900 °C and CO2/CH3OH ratio (C/M) of 1–2.5) on Cr-Mo-Mn/SiO2 catalyst. The kinetic model developed based on the Langmuir–Hinshelwood (LH) approach and mechanism contained three reversible reactions on three types of active sites. The results of the statistical analysis presented that kinetic model parameters were statistically significant. The error of the suggested kinetic model was 9.87% using equation state (EoS) of Soave–Redlich–Kwong on the basis of modified Huron–Vidal mixing rule (SRK/MHV2) applied to evaluate vapor–liquid equilibrium behavior. The highest precision in predicting the experimental data by the suggested kinetic model was assigned to methanol conversion. The outcomes presented the high temperature is suitable for higher CO yield, methanol and CO2 conversions. An augmentation in carbon dioxide percentage of the inlet feed led to enhance in CO yield, methanol and CO2 conversions, while H2 yield was decreased.
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Abbreviations
- cal:
-
Calculated
- E :
-
Activation energy of reaction (kJ/mol)
- exp:
-
Experimental
- in:
-
Inlet
- k i :
-
Reaction rate constant of "i"
- k i ,0 :
-
Pre-exponential factor of the reaction "i"
- K :
-
Equilibrium constant
- m i :
-
Molar flow rate of ith component (mol/s)
- n exp :
-
Number of the experimental data
- out:
-
Outlet
- R :
-
Universal gas constant
- r :
-
Reaction rate (mol/kgcat s)
- res:
-
Response
- w cat :
-
Catalyst weight (kg)
- x CH3OH :
-
Methanol conversion (%)
- x CO2 :
-
CO2 conversion (%)
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Mosayebi, A. Kinetic modeling and experimental investigations of dry reforming of methanol over a Cr-Mo-Mn/SiO2 catalyst. Res Chem Intermed 47, 2951–2972 (2021). https://doi.org/10.1007/s11164-021-04448-0
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DOI: https://doi.org/10.1007/s11164-021-04448-0