The storage mat (5) consists of high refractory metal fiber with an equivalent diameter of 200 microns m maximum. Exhaust gas catalyst for automobiles has housing (1), a monolith (3) arranged in the housing forming a radial fission chamber (4) and a storage mat (5) lying in a radial pre-tension in the fission chamber. An Independent claim is included for a process for producing a exhaust gas catalyst.
