My research has been focused on modeling in hetereogenous catalysis, regarding: reaction kinetics, catalyst deactivation, detailed reactor modeling, process dynamics, with a strong focus on optimization. The relevant reactions I've been working on are methanol synthesis, ammonia synthesis, and ammonia cracking.
Expertise
Chemical Engineering
- Chemical Kinetics Characteristics
- Ammonia Synthesis
- Methanol Synthesis
- Cu-ZnO-Al2O3 Catalysts
- Methanol
- Carbon Dioxide
- Thermodynamics
Material Science
- Catalyst
Organisations
Publications
2026
Multi-scale modeling of sustainable methanol and ammonia synthesis (2026)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente. Keestra, H.https://doi.org/10.3990/1.9789036570473
2025
Universal kinetic model for ammonia synthesis on various ruthenium-based catalysts (2025)Chemical Engineering Journal, 523. Article 168541. Keestra, H., Rouwenhorst, K. H. R. & Brilman, D. W. F.https://doi.org/10.1016/j.cej.2025.168541A century of data: Thermodynamics and kinetics for ammonia synthesis on various commercial iron-based catalysts (2025)Chemical Engineering Journal, 518. Article 164593. Keestra, H., Slotboom, Y., Rouwenhorst, K. H. R. & Brilman, D. W. F.https://doi.org/10.1016/j.cej.2025.164593A Century of Data: Thermodynamics and Kinetics for Ammonia Synthesis on Various Commercial Iron-based Catalysts (2025)Systems & control transactions, 4, 92-97. Keestra, H., Slotboom, Y., Rouwenhorst, K. H. R. & Brilman, D. W. F.https://doi.org/10.69997/sct.128811Corrigendum to “Improved kinetic model for methanol synthesis with Cu/ZnO/Al2O3 catalysts based on an extensive state-of-the-art dataset” [Chem. Eng. J. 507 (2025) 159953] (Chemical Engineering Journal (2025) 507, (S1385894725007521), (10.1016/j.cej.2025.159953)) (2025)Chemical Engineering Journal, 514. Article 163105. van Schagen, T. N., Keestra, H. & Brilman, D. W. F.https://doi.org/10.1016/j.cej.2025.163105Improved kinetic model for methanol synthesis with Cu/ZnO/Al2O3 catalysts based on an extensive state-of-the-art dataset (2025)Chemical Engineering Journal, 507. Article 159953. van Schagen, T. N., Keestra, H. & Brilman, D. W. F.https://doi.org/10.1016/j.cej.2025.159953
2023
The Infinity Reactor: A new conceptual design for a more cost-efficient CO2 to methanol route (2023)In 33rd European Symposium on Computer Aided Process Engineering, ESCAPE 2023: Athens, Greece from 18-21 June 2023 (pp. 2309-2316) (Computer Aided Chemical Engineering; Vol. 52). Elsevier. Keestra, H., Zondervan, E. & Brilman, W.https://doi.org/10.1016/B978-0-443-15274-0.50368-1Entrainer selection for the extractive distillation of acrylic acid and propionic acid (2023)Chemical engineering research and design (Transactions of the Institution of Chemical Engineers, part A), 192, 653-663. Keestra, H., Brouwer, T., Schuur, B. & Lange, J.-P.https://doi.org/10.1016/j.cherd.2023.02.049
Research profiles
Address
University of Twente
Horst Complex (building no. 20), room ME360
De Horst 2
7522 LW Enschede
Netherlands
University of Twente
Horst Complex ME360
P.O. Box 217
7500 AE Enschede
Netherlands
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