Some textural characteristics of prepared mesoporous SO₃H–NiO–ICG catalyst.

Catalyst	aSSA	b D p	c V p	dNH3 acidity density
SO3H–NiO–ICG	411	3.1	0.13	3.10 ± 0.05

^aSpecific surface area (m² g⁻¹).

^bAverage pore diameter (nm).

^cTotal pore specific volume at P/P_o = 0.99 (cm³ g⁻¹).

^dBased on NH₃-TPD measurements (mmol g⁻¹).