SOx traps were prepared using hydrotalcite materials of different composition and their SOx storage properties were monitored during temperature cycling ( 50 - 600 degrees C) under continuous feed streams ( 50 ppm SO2, 6 vol.% O-2, 5 vol.% CO2, 100 ppm NO) at a space velocity of 144,000 L/( kg h). A comparison is made with non- hydrotalcite mixed oxide supports as well as pure alumina. The most promising material NaMnOx/Al2O3 was wash- coated on a cordierite core and its SOx trap capacity was compared with the performance of the powder and the slurry. The slurry as well as the monolith- supported material showed an SO2 uptake of 93% over 7 h time- onstream corresponding to 20 wt.% sulphate. DRIFT spectroscopy revealed the prevailing sulphate formation on Mn- related sites and Na. Regeneration of the trap with CO/H-2 ( lambda = 0.99) at 600 degrees C was not completely possible.