Temperature Programmed Desorption (TPD) is an analytical technique used to study the surface properties of catalysts. It involves the adsorption of gas molecules onto the surface of a catalyst at a low temperature, followed by a controlled increase in temperature to monitor the desorption of these molecules. The desorbed species are typically detected by a mass spectrometer or a thermal conductivity detector, providing information on the strength and distribution of adsorption sites on the catalyst surface.
