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Research: Synthesis of chemicals and materials, reduction of pollutants emissions, and energy conversion

 

Our research interests lie in the area of chemical reaction engineering, in particular in experimental, theoretical, and numerical investigations of heterogeneous (gas/liquid/solid) reaction systems for the synthesis of chemical and materials, the reduction of pollutant emissions and energy conversion. The work focuses on bridging the gap between surface science and heterogeneous catalysis as well as on understanding the interactions between chemical reactions and transport phenomena in chemical reactors and combustion systems. This approach is based on modern experimental investigations of the elementary processes in the gas phase and on the solid surface and further on measurements of the behavior of the entire reactor. The research also focuses on the development and application of computational tools for the numerical simulation of chemically reacting flows in laboratory experiments and in technical reactors under industrial conditions.

 

High-temperature catalysis

Synthesis gas by catalytic partial oxidation of methane
Partial oxidation of light alkanes to olefins
Formation of oxygenates by partial oxidation of alkanes
Conversion of ethanol to hydrogen
Conversion of gasoline and diesel to hydrogen
Conversion of kerosene to hydrogen
Dry reforming of methane

 

high-temperature catalysis

 
Control of pollutant emissions

Three-way catalytic converter
Lean NOx trap
Diesel oxidation catalysts
Aging of automotive catalysts
Urea-SCR catalysts
Modeling of AdBlue decomposition

emission control

 

 

Multi-functional conversion of chemicals and energy

 

Experimental studies of multiphase chemical reactions in exhaust

aftertreatment systems

 
Combustion

Optical diagnostics in combustion
Catalytic combustion research for gas turbine application
Catalytic radiant burner with energy recuperation

 

combustion

 

 

Materials synthesis

Carbon nanotubes
Pyrolytic carbon
Materials World Network: Carbon-carbon composites 

 

carbon

 

Solid oxide fuel and solid oxide electrolysis cells

Modeling direct internal reforming in anode-supported cells
Modeling transients in SOFC stacks

 

Multi-phase flow

Scale-resolving simulation of reactive two-phase flows in monolith and solid foam reactors

Hydrodynamics and mass transfer in Taylor flow
Turbulence modeling of bubbly two-phase flows

   

 

 
Computational tools

Detailed Chemistry models in CFD with DETCHEM
Multi-Phase Flow with TURBIT-VOF
Monte-Carlo-simulation of catalytic reactions with MoCKa
Optimization of reactive systems

 

multi-phase

Reaction mechanisms

Catalytic conversion over platinum
Catalytic conversion over rhodium
Catalytic conversion over nickel

 

reaction mechanisms

Laboratories and Equipment
Exhaust-Gas Center (Abgaszentrum) Karlsruhe
Catalysis at High Temperature Laser Environment (CATHLEN)
Optical Diagnostics
Spacial Profiles in monolithic catalysts (SpaciPro)
High-temperature catalysis reactors (CPOX-I, -II)
Stagnation Flow Reactor
Microscopy
Analytics
Computer cluster