Abstract
Bio-ethanol is well known for its use as a gasoline additive. However, it can be blended in low portions to traditional gasoline although it has a corrosive nature. By taking advantage of modern continuous reactor technology and heterogeneous alumina catalysts, ethanol can be upgraded to 1-butanol in fixed beds. Butanol has more feasible properties as fuel component in comparison to ethanol. Mathematical modeling of reaction kinetics revealed a simple kinetic model could be used to describe the complex reaction process on a Cu/alumina catalyst. The reaction kinetics model is based on five parallel reactions in which ethanol reacts to 1-butanol, acetealdehyde, ethyl acetate, diethyl ether and diethoxyethane, respectively.
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Abbreviations
- c:
-
Concentration (mol/m3)
- k:
-
Rate constant
- k0 :
-
Frequency factor
- Ea:
-
Activation energy (J/mol)
- r:
-
Reaction rate
- Q:
-
Sum of squares
- R:
-
Component generation rate
- R:
-
Gas constant in Arrhenius equation 8.314 (J/molK)
- T:
-
Temperature (K)
- \( \bar{T} \) :
-
Mean temperature of experiments (K)
- ρB :
-
Catalyst bulk density (cm3/gcat)
- τ:
-
Residence time (min)
- i:
-
Component index
- j:
-
Reaction index
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Acknowledgments
The work is a part of the activities of Process Chemistry Centre (PCC), a centre of excellence financed by Abo Akademi University, Finland. The Academy of Finland is acknowledged for financial support. In Sweden Bio4Energy and Kempe foundation are acknowledged for financial support.
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Riittonen, T., Salmi, T., Mikkola, JP. et al. Direct Synthesis of 1-Butanol from Ethanol in a Plug Flow Reactor: Reactor and Reaction Kinetics Modeling. Top Catal 57, 1425–1429 (2014). https://doi.org/10.1007/s11244-014-0314-4
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DOI: https://doi.org/10.1007/s11244-014-0314-4