Tuomo J. Keskitalo
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Tuomo J. Keskitalo has a total of 2 co-authors. Here are the top co-authors by number of shared publications:
A. Outi I. Krause
Laboratory of Industrial Chemistry, Helsinki University of Technology, P.O. Box 6100, FI-02015 TKK, Finland, and VTT Processes, P.O. Box 1602, FI-02044 VTT, Finland
1 shared publicationMarita K. Veringa Niemelä
Laboratory of Industrial Chemistry, Helsinki University of Technology, P.O. Box 6100, FI-02015 TKK, Finland, and VTT Processes, P.O. Box 1602, FI-02044 VTT, Finland
1 shared publication
Latest Publications
- 1 June 2007
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 23 (14) , 7612-7619
Modeling of the Adsorption and Desorption of CO2 on Cu/ZrO2 and ZrO2 Catalysts
The interaction between carbon dioxide and two zirconia catalystsa Cu/ZrO2 catalyst containing 34% copper and a pure ZrO2 catalystwas studied by pulse adsorption and temperature-programmed desorption methods. Kinetic modeling by nonlinear regression was applied to acquire information on the adsorption and desorption of CO2 relevant in the synthesis of methanol from carbon dioxide. A model that included three types of adsorption sites described well the experimental data for both Cu/ZrO2 and ZrO2. The model assumed first-order kinetics and a Freundlich-type logarithmic dependence of adsorption enthalpy on surface coverage. The parameters of the model were well identified and were in the physically meaningful range. The results indicate that, at 30 °C, on both catalysts, carbon dioxide adsorbs reversibly on one type of site and irreversibly on two other types of sites.
- 1 June 2007
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 23 (14) , 7612-7619
Modeling of the Adsorption and Desorption of CO2 on Cu/ZrO2 and ZrO2 Catalysts
The interaction between carbon dioxide and two zirconia catalystsa Cu/ZrO2 catalyst containing 34% copper and a pure ZrO2 catalystwas studied by pulse adsorption and temperature-programmed desorption methods. Kinetic modeling by nonlinear regression was applied to acquire information on the adsorption and desorption of CO2 relevant in the synthesis of methanol from carbon dioxide. A model that included three types of adsorption sites described well the experimental data for both Cu/ZrO2 and ZrO2. The model assumed first-order kinetics and a Freundlich-type logarithmic dependence of adsorption enthalpy on surface coverage. The parameters of the model were well identified and were in the physically meaningful range. The results indicate that, at 30 °C, on both catalysts, carbon dioxide adsorbs reversibly on one type of site and irreversibly on two other types of sites.