Kinetics of the one-pot transformation of citronellal to menthols on Ru/H-BEA catalysts

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Jutta Plößer, Martin Lucas, Johan Wärnå, Tapio Salmi, Dmitry Yu. Murzin, Peter Claus
Publication year: 2016
Journal: Organic Process Research and Development
Volume number: 20
Issue number: 9
Start page: 1647
End page: 1653
eISSN: 1520-586X


Abstract

Temperature, pressure, and concentration variation experiments were conducted in the one-pot-transformation of citronellal to menthol with 1%Ru/H-BEA-25 as bifunctional catalyst. This reaction requires a combination of a cyclization and hydrogenation step, therefore the product distribution strongly depends on reaction conditions, especially on the reaction temperature. At lower temperatures the consecutive hydrogenation of citronellal prevails, whereas at high temperatures defunctionalization of menthols is favored leading to a maximum menthol yield at 373 K. A kinetic model was proposed based on a Langmuir–Hinshelwood mechanism and different active sites for cyclization and hydrogenation reactions. Kinetic parameters (reaction constants, activation energies, and adsorption coefficients) were estimated by using nonlinear regression.


Keywords

engineering education

Last updated on 2019-21-11 at 05:08