The copper-doped hydrotalcite samples show a very similar behavior to the undoped HT samples, with a narrow pore size distribution when aged at 65 °C (mean pore diameter of 3.6 nm), which broadens when aged at 80 °C (average pore size of 6.2 nm, Figure ). However, the number of pores seems to stay the same as the BJH pore volume does not change and the surface area even decreases.