Temperature Programmed Desorption

Catalysis on metals group

The self-constructed TPD (Temperature Programmed Desorption) setup allows the temperature induced desorption of different kinds of probe molecules like H2, CO, CO2 into a stream of inert gas. The desorption event itself is analyzed by mass spectrometry (QMS). Samples are possibly treated in a temperature window between –196 °C to +500 °C and at pressures up to 30 bar. Heating rates between 1 and 15 °C/min are generally applied, also for kinetic investigations.

 

 

 

Temperature range                   -196 -+500 °C

Heating rate                                1-10 °C/min

Pressure                                      Up to 30 bar

Sample sieve fraction               100-200 μm / 50 -200 mg

Available Gases                          H2, CO, CO2

Methods                                      TPD   

Detection                                     QMS

Inert Transfer                              possible

 

 

 

1.
Matthias B. Fichtl, Julia Schumann, Igor Kasatkin, Nikolas Jacobsen, Malte Behrens, Robert Schlögl, Martin Muhler, and Olaf Hinrichsen, "Counting of Oxygen Defects versus Metal Surface Sites in Methanol Synthesis Catalysts by Different Probe Molecules," Angewandte Chemie International Edition 53 (27), 7043-7047 (2014).
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