Temperature-Programmed Methods: Reduction (TPR), Oxidation (TPO), Desorption (TPD)

Objects of study

Oxide and metal catalysts both bulk and supported.

Applications

The determination of number and quantity of surface and volume forms of active component differed by the valent state, coordinational environment and dispersity.

Instrument facilities

Standard b>TPR method includes treating of the sample in the flow of oxygen or inert followed by temperature programmed reduction in the hydrogen-argon or CO/He flow with the measurement of hydrogen or CO consumption. The rate of heating from the room temperature to 1200 K may vary from 2 to 20 degrees/min.

The following related variants of TPR method are available:

• Temperature programmed oxidation (TPO) – for the reduced samples .
• Temperature programmed desorption (TPD) – for the study of chemisorption of reagents and reaction products.

Samples requirements

The weight of the sample from 10 to 500 mg depending on the reducible component content.

Leading scientists and their research interests

Dr. V.A. Rogov. Oxide and metal catalysts.