We present the first Time Resolved X-Ray Photoelectron Spectroscopy experiments performed at the Trieste SuperESCA beamline. Owing to the high brilliance of the third generation synchrotron radiation source and to the characteristics of the beam line, high quality high resolution (better than 0.3 eV) core level photoemission data from adsorbate species on metal samples can be acquired in a few seconds. This opens up the possibility to a new kind of experiments, where XPS is used to follow in real time the dynamics of surface processes. By following the time evolution of C, N and O 1s levels, we could study the kinetics of the adsorption of CO on Pt{111} and the adsorption of NO and the CO+O reaction on Rh{110}.