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Determination of the kinetics and mechanism of methyl formate synthesis in the presence of a homogeneous catalyst
Åbo Akad Univ, Proc Chem Ctr, FI-20500 Turku, Finland .
Åbo Akad Univ, Proc Chem Ctr, FI-20500 Turku, Finland .
Åbo Akad Univ, Proc Chem Ctr, FI-20500 Turku, Finland .
Umeå University, Faculty of Science and Technology, Department of Chemistry. (Åbo Akad Univ, Proc Chem Ctr, FI-20500 Turku, Finland)
2012 (English)In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 203, 469-479 p.Article in journal (Refereed) Published
Abstract [en]

The kinetics and mechanism of methyl formate synthesis, the key intermediate of the formic acid process was determined. Methyl formate was prepared from carbon monoxide and methanol in the presence of potassium methoxide as a homogeneous catalyst. Experimental work was carried out in a laboratory-scale semi-batch autoclave to obtain the intrinsic reaction kinetics. The experimental results were described with a plausible reaction mechanism comprising the reaction of potassium methoxide with carbon monoxide, followed by the proton transfer from methanol to the reaction intermediate to restore the catalyst. It was observed that simple first order kinetics fits the experimental data of the catalyst decomposition. A model for the gas-liquid mass transfer, coupled to the synthesis reaction was developed and the reaction of potassium methoxide was assumed to be the rate-determining step. The equilibrium, mass transfer and rate parameters included in the completely new kinetic model were determined with non-linear regression analysis. A comparison of the modeling results with the experimental data illustrated a good agreement between the model and the actual data. The kinetic and mass transfer models can be used for the scale-up of the methyl formate synthesis.

Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 203, 469-479 p.
Keyword [en]
methyl formate synthesis, gas-liquid mass transfer, reaction mechanism, kinetic modelling
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-57084DOI: 10.1016/j.cej.2012.06.085OAI: oai:DiVA.org:umu-57084DiVA: diva2:539574
Available from: 2012-07-04 Created: 2012-07-04 Last updated: 2017-12-07Bibliographically approved

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