FORSKNING | RESEARCH
LUNDS UNIVERSITET
Department of Chemical Engineering
Simulation of catalytic kinetics in reactors
Figure 1. Left, the mesh used in the simulation, right, the temperature field in the reduction of 5000 ppm of NO with 5500 ppm of NH3. The inlet temperature is 720 K.
Figure 2. Comparison of simulated and experimentally determined outlet concentrations of NO (left) and N2O (right) as a function of the temperature at the outlet of the bed. Blue line simulated values and markers experimental values. Green line shows the calculated NH3 content.
References:
- Brandin J, Hulteberg C, Odenbrand I (2012) ”High-temperature and high-concentration SCR of NO with NH3: Application in a CCS process for removal of carbon dioxide”, Chemical Engineering Journal 191: 218.
- Brandin JGM, Odenbrand CUI (2017) “Poisoning of SCR Catalysts used in Municipal Waste Incineration Applications”, Top. Catal. 60: 1306.
- Odenbrand CUI (2017) “High Temperature and High Concentration SCR of NO with NH3 for the Oxyfuel Combustion Process: Fitting of Kinetics to Data from a Laboratory Reactor Experiment”, Top. Catal. 60:1317.
- Brandin JGM, Odenbrand CUI (2018) “Deactivation and Characterization of SCR Catalysts Used in Municipal Waste Incineration Applications”, Catal. Letter 148:312.
- Odenbrand CUI (2018) “CaSO4 deactivated V2O5-WO3/TiO2 SCR catalyst for a diesel power plant. Characterization and simulation of the kinetics of the SCR reactions”, Appl. Catal. B: Environ. 234:365.
- Odenbrand CUI, (2019) “Penetration of Poisons Along the Monolith Length of a V2O5/TiO2 Diesel SCR Catalyst and Its Effect on Activity”, Catalysis Letters, DOI 10.1007/s10562-019-02892-7
- Odenbrand CUI, (2019) Submitted for publication in Environmental Research and Technology
Chemical Center
P.O. Box 124
S-221 00 Lund
Contact person:
Prof em. Ingemar Odenbrand
telephone 46 – 46 2228284
telefax 46 – 46 149156
E-mail: Ingemar.Odenbrand@chemeng.lth.se
Personnel:
2 professors
1 professor ( retired )
1 ass. professor
1 research assistant
4 Ph D students
1 technician
Research topics:
- Selective catalytic reduction of NOx
- Reduction of NOx from diesel engines
- Models of catalysis as a resonance effect
- Experimental deactivation studies
- Simulation of catalytic kinetics in reactors
Techniques and Instrumentation:
XRD, FTIR, FT-Raman, BET, Chemisorption, TPD/TPR, TGA, TAP-2, AA, SEM, electrochemical instrumentation, polarimeter
Division of Synchrotron Radiation Research
The Division of Synchrotron Radiation Physics has about 50 employees and covers a wide range of research topics that are interlinked with each other as well as to research groups in Lund, Sweden, and internationally.
We perform experimental studies of physical, chemical, structural, and dynamical properties of materials, especially at surfaces and interfaces or free molecules and clusters. We develop accelerators, instrumentation, and methods for generation and use of synchrotron radiation.
We are strongly engaged in several large environments in Lund including MAX IV Laboratory, NanoLund, and Lund Laser Center. At the division we host one of Sweden’s largest facilities for scanning probe microscopy, equipment for X-ray diffraction and electron spectroscopy.
We teach a variety of undergraduate and graduate courses and offer many exciting bachelor, master, and PhD projects.
1)a)A curved Pd crystal with A-type steps on one side and B-type step on the other side was studied during CO oxidation using PLIF. The spatial resolution of the CO2 gas phase provided by PLIF revealed that the B-type step side ha a 6 °C lower light off than the A-type step. The PLIF images b) to d) show the local CO2 production over the crystal at different temperatures during a temperature ramp of the curved crystal.
2)In Planar Laser-Induced Fluorescence (PLIF) a laser is used to excite the gas molecules close to the catalyst surface. By this, an in-depth understanding of the gas phase in a catalytic process can be achieved.
3)Ambient Pressure X-ray Photoelectron Spectroscopy (AP-XPS) is a powerful technique to study catalysis processes. Chemical information about the surface as well as the gas molecules interacting with the catalyst surface is probed. This can provide detailed information about the active phase of the catalyst.
The National Center for High Resolution Electron Microscopy (nCHREM)
[PLATS FÖR BILD]
Center for Analysis and Synthesis
P.O. Box 124
S – 221 00 Lund
Contact person:
Dr Reine Wallenberg
telephone 46 – 46 2228233
telefax 46 – 46 2224012
E-mail: reine.wallenberg@chem.lu.se
Personnel:
2 professors
1 research associate
1 Ph D student
Research topics:
- Green Catalysis
- Oxide catalysts
- High resolution electron microscopy
- Metal/Bimetallic clusters
- Electron energy loss spectroscopy / imaging
- Crystal structure – surface science
Techniques and Instrumentation:
- Environmental Transmission Electron Microscope for in-situ studies
- Analytical electron microscope
- Scanning electron microscope
- High resolution transmission electron microscope
- EDS / EELS
