Selective Methanol Oxidation to Green Oxygenates—Catalyst Screening, Reaction Kinetics and Performance in Fixed-Bed and Membrane Reactors
-
Published:2023-04-22
Issue:5
Volume:13
Page:787
-
ISSN:2073-4344
-
Container-title:Catalysts
-
language:en
-
Short-container-title:Catalysts
Author:
Walter Jan P.1, Wolff Tanya2, Hamel Christof1
Affiliation:
1. Institute of Process Engineering, Otto von Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany 2. Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstraße 1, 39106 Magdeburg, Germany
Abstract
Experimental and simulation-based investigations are carried out for the selective oxidation of green methanol to the oxygenates dimethoxymethane (DMM) and methyl formate (MF), including an initial catalyst screening, the derivation of a reaction kinetic model, and a feasibility study of a fixed-bed and a membrane reactor with oxygen distribution. The catalyst screening of different supports and loading of vanadium revealed a 6.6 wt.-% VOx/TiO2 catalyst offering the highest potential to the formation for the target products. Kinetic experiments performed in a broad range of operation conditions, e.g., residence time, temperature, and oxygen concentration, are used for the postulation of a reaction network, providing the basis for mathematical modeling of the individual five reaction rates with a reduced mechanistic approach. A simulation study based on the derived reaction kinetics and parameters revealed the high potential of a distributed oxygen dosing at high residence times, outperforming the conventional fixed-bed reactor by up to 6% in the yield of DMM and up to 19% in the yield of MF. The formation of DMM is favored at low temperatures, whereas the formation of MF is supported by high temperatures.
Funder
Ministry for Science, Energy, Climate Protection and the Environment of the State of Saxony-Anhalt
Subject
Physical and Theoretical Chemistry,Catalysis,General Environmental Science
Reference55 articles.
1. Potential and risks of hydrogen-based e-fuels in climate change mitigation;Ueckerdt;Nat. Clim. Chang.,2021 2. Ehmann, K.R., Nisters, A., Vorholt, A.J., and Leitner, W. (2022). Carbon Dioxide Hydrogenation to Formic Acid with Self-Separating Product and Recyclable Catalyst Phase. ChemCatChem, 14. 3. Klemm, E., Lobo, C.M.S., Löwe, A., Schallhart, V., Renninger, S., Waltersmann, L., Costa, R., Schulz, A., Dietrich, R.-U., and Möltner, L. (2022). CHEMampere: Technologies for sustainable chemical production with renewable electricity and CO2, N2, O2, and H2O. Can. J. Chem. Eng. 4. Ott, J., Gronemann, V., Pontzen, F., Fiedler, E., Grossmann, G., Kersebohm, D.B., Weiss, G., and Witte, C. (2000). Ullmann’s Encyclopedia of Industrial Chemistry, Wiley-VCH Verlag GmbH & Co. KGaA. 5. Methanol—Die Basischemikalie;Bertau;Chem. Unserer Zeit,2015
|
|