TPDRO 1110
Temperature Programmed Desorption; Desorption; Reduction & Oxidation
Microstructure Surface Analysis Instruments
The TPDRO 1100 from ThermoFisher is an automatic catalyst
characterization unit with utmost sensitivity and specificity:
  • Thermal Programmed Desorption
  • Thermal Programmed Reduction
  • Thermal Programmed Oxidation
  • Pulse Chemisorption
  • Catalysts Activation

The TPDRO 1100 can also be connected with our
recommended Mass Spectrometer (MS) for unambiguous
identification of outgassing components.
Probably the most time consuming step in catalyst development is represented by a proper and accurate
characterization of surface properties and reactivity. Fundamental parameters such as free metal surface, metal
dispersion and surface reactivity can be achieved very often by long procedures that have to be exactly repeated to
obtain reproducible results. The TPDRO 1100 joins in a single instrument the most commonly used techniques of
temperature programmed desorption (TPD), reduction (TPR), oxidation (TPO) and pulse chemisorption, using a
wide range of pure gases and mixtures. I
t can perform activation of one catalyst while analysing another on the
same instrument which comes as standard with two electrically heated ovens.
What makes TPDRO 1100 different?

Proprietary designed micro-reactor for catalyst
insulation and transfer after activation

After the sample pre-treatment the reactor can be closed and
the sample kept in inert gas. This allows the transfer of the
reactor to the analytical position for measuring, avoiding any
contact with external atmosphere.  Pretreatment with toxic
gases such as ammonia; H2S etc.
.. can readily be performed
away from the instrument under a fumehood
conventional gasline connectors before transferring back to
the instrument for analysis. It not only avoid having to design a
special fumehood to fit an entire instrument, it also protects
the Thermal Conductivity Detector TCD filaments from the
corrosive gases.  

Separate plumbing design for pre-treatment and
This feature avoids contamination of the analytical plumbing
during the activation procedure. Many pollutants vapors are
usually generated during pre-treatment. The circuit separation
avoids long waiting time for the detector stablization, due to
the slow degassing of the tubing and wrong results as the
TCD detector cannot discrim
inate between different volatile
Preheating of inlet gases avoids
temperature gradient in the sample bed
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