Deconvolution of the CO₂-TPD profiles and total basicity for the different Mg-promoted and non-promoted natural clay supported catalysts.

Catalyst	Deconvolution [μmol CO2 per g]			Total basicity [μmol CO2 per g]
	Weak	Medium	Strong
Ni/raw-clay	9.9	7.7	6.0	23.6
Ni–10Mg/raw-clay	10.2	10.4	11.4	32.0
Ni/Fe-clay	4.8	19.6	6.0	30.4
Ni–10Mg/Fe-clay	15.5	11.1	10.4	37.0
Ni–20Mg/Fe-clay	9.7	13.9	8.6	32.2
Ni–30Mg/Fe-clay	22.9	11.5	14.9	49.3
Ni/Cu-clay	0.5	2.2	1.4	4.1
Ni–10Mg/Cu-clay	35.7	25.7	37.7	99.1